CST

DFM-6301 Models Program Output Switching Inductive LoadsThe use of suppressors (snubbers) is strongly recommended when switchinginductive loads to prevent disrupting the microprocessor’s operation. Thesuppressors also prolong the life of the relay contacts. Suppression can beobtained with resistor-capacitor (RC) networks assembled by the user orpurchased as complete assemblies. Refer to the following circuits for RC networkassembly and installation: C CR R Figure 7: AC and DC Loads ProtectionChoose R and C as follows:R: 0.5 to 1 Ω for each volt across the contactsC: 0.5 to 1 µF for each amp through closed contactsNotes: 1. Use capacitors rated for 250 VAC. 2. RC networks may affect load release time of solenoid loads. Check to confirm proper operation. 3. Install the RC network at the meter's relay screw terminals. An RC network may also be installed across the load. Experiment for best results. Use a diode with a reverse breakdown voltage two to three times the circuit voltage and forward current at least as large as the load current. Figure 8: Low Voltage DC Loads Protection 18

DFM-6301 Models Program Output 4-20 mA Output ConnectionsConnections for the 4-20 mA transmitter output are made to the connectorterminals labeled MA OUT. The 4-20 mA output may be powered internally orfrom an external power supply. 24 V 24 VRELAY1 MA OUT RELAY1 MA OUT321 I- I+ R 321 I- I+ R 321 321 +- +- -+ 4-20 mA Input 4-20 mA 12-35 VDC Remote Display, Input Meter PowerChart Recorder, Etc. Supply Figure 9: 4-20 mA Output Connections Analog Output Transmitter Power SupplyThe internal 24 VDC power supply powering the analog output may be used topower other devices, if the analog output is not used. The I+ terminal is the +24 Vand the R terminal is the return. 19

DFM-6301 Models Program OutputSetting the Relay Operation (relay)This menu is used to set up the operation of the relays. This menu is onlyavailable in PD6300-xx5-CS models. ! During setup, the relays do not follow the input and they will remain in the state found prior to enteringCaution! the Relay menu.1. Relay assignment a. Rate for low and high alarm b. Total c. Grand total d. Modbus input2. Relay action a. Automatic reset only (non-latching) b. Automatic + manual reset at any time (non-latching) c. Latching (manual reset only) d. Latching with Clear (manual reset only after alarm condition has cleared) e. Alternation control (automatic reset only) f. Sampling (the relay is activated for a user-specified time) g. Off (relay state controlled by Interlock feature)3. Set and reset points4. Fail-safe operation a. On (enabled) b. Off (disabled)5. Time delay a. On delay (0-999.9 seconds) b. Off delay (0-999.9 seconds) 20

DFM-6301 Models Program Output Relay Assignment (Assign)The relays can be assigned to any of the following parameters:1. Rate for low or high alarm indication2. Total for alarm indication3. Grand total for alarm indication4. Modbus input 21

DFM-6301 Models Program Output Setting the Relay ActionOperation of the relays is programmed in the Action menu. The relays may be setup for any of the following modes of operation:1. Automatic reset (non-latching)2. Automatic + manual reset at any time (non-latching)3. Latching (manual reset only, at any time)4. Latching with Clear (manual reset only after alarm condition has cleared)5. Alteration control (automatic reset only)6. Sampling (the relay is activated for a user-specified time)7. Off (relay state controlled by Interlock feature)The following graphic shows relay 1 action setup; relay 2-8 are set up in a similarfashion. 22

DFM-6301 Models Program Output Programming Set and Reset PointsHigh alarm indication: program set point above reset point.Low alarm indication: program set point below reset point.The deadband is determined by the difference between set and reset points.Minimum deadband is one display count. If the set and reset points areprogrammed with the same value, the relay will reset one count below the setpoint.Note: Changes are not saved until the reset point has been accepted. Setting Fail-Safe OperationIn fail-safe mode of operation, the relay coil is energized when the process variableis within safe limits and the relay coil is de-energized when the alarm conditionexists. The fail-safe operation is set independently for each relay. Select on toenable or select off to disable fail-safe operation. Programming Time DelayThe On and Off time delays may be programmed for each relay between 0 and999.9 seconds. The relays will transfer only after the condition has beenmaintained for the corresponding time delay.The On time delay is associated with the set point.The Off time delay is associated with the reset point. 23

DFM-6301 Models Program OutputRelay Operation DetailsOverviewThe relay capabilities of the meter expand its usefulness beyond simple indicationto provide users with alarm and control functions. These capabilities include frontpanel alarm status LEDs as well as 2 optional internal relays. Typical applicationsinclude high or low flow alarms and basic batch control. There are four basic waysthe relays can be used:1. High or Low Alarms with Latching or Non-Latching Relays2. Simple On/Off Control with 100% Adjustable Deadband3. Sampling (Based on Time)4. Alternation Control for up to 8 relaysRelays Auto InitializationWhen power is applied to the meter, the front panel LEDs and alarm relays willreflect the state of the input to the meter. The following table indicates how thealarm LEDs and relays will react on power-up based on the set and reset points:Alarm # HI or LO Set Reset Power-Up Relay & Alarm Point Point Reading LED 1 2 HI 1000 500 499 Off 3 LO 700 900 499 On 4 LO 250 400 499 Off HI 450 200 499 OnFail-Safe OperationThe following table indicates how the relays behave based on the fail-safeselection for each relay:Fail-Safe Non-Alarm State Alarm State Power FailureSelection NO NC NO NC Open Closed Closed Open Relays go to Off non-alarm state Closed Open Open Closed Relays go to On alarm stateNote: NO = Normally Open, NC = Normally Closed. This refers to the condition ofthe relay contacts when the power to the meter is off. 24

DFM-6301 Models Program OutputFront Panel LEDsThe LEDs on the front panel provide status indication for the following: LED Status LED Status 1 Alarm 1 5 Alarm 5 2 Alarm 2 6 Alarm 6 3 Alarm 3 7 Alarm 7 4 Alarm 4 8 Alarm 8The meter is supplied with four alarm points that include front panel LEDs toindicate alarm conditions. This standard feature is particularly useful for alarmapplications that require visual-only indication. The LEDs are controlled by the setand reset points programmed by the user. When the display reaches a set pointfor a high or low alarm, the corresponding alarm LED will turn on. When thedisplay returns to the reset point the LED will go off. The front panel LEDs responddifferently for latching and non-latching relays.For non-latching relays, the LED is always off during normal condition and alwayson during alarm condition, regardless of the state of the relay (e.g. Relayacknowledged after alarm condition).For latching relays, the alarm LEDs reflects the status of the relays, regardless ofthe alarm condition. The following tables illustrate how the alarm LEDs function inrelation to the relays and the acknowledge button. (Default: F3 key assigned toACK):Latching and Non-Latching Relay OperationThe relays can be set up for latching (manual reset) or non-latching (automaticreset) operation. Relay terminology for following tables Terminology Relay Condition On Alarm (Tripped) Off Normal (Reset) Ack AcknowledgedThe On and Off terminology does not refer to the status of the relay’s coil, whichdepends on the fail-safe mode selected. In latching relay mode, latched relays will reset (unlatch) when power is cycled.Warning! 25

DFM-6301 Models Program OutputNon-Latching Relay (Auto) Automatic reset onlyCondition LED RelayNormal Off OffAlarm On OnAck (No effect) On OnNormal Off OffIn this application, the meter is set up for automatic reset (non-latching relay).Acknowledging the alarm while it is still present has no effect on either the LED orthe relay. When the alarm finally goes away, the relay automatically resets and theLED also goes off. Non-Latching Relay (A-nmAn) Automatic + manual reset at any timeCondition LED RelayNormal Off OffAlarm On OnNormal Off OffNext Alarm On OnAck On OffNormal Off OffIn this application, the meter is set up for automatic and manual reset at any time(non-latching relay). The LED and the relay automatically reset when the meterreturns to the normal condition.The next time an alarm occurs, the operator acknowledges the alarm manuallywhile the alarm condition still exists. This causes the relay to reset, but the LEDstays on until the meter returns to the normal condition. Latching Relay (LatcH) Manual reset any time Condition LED Relay Normal Off Off Alarm On On Ack Off OffIn this application, the meter is set up for manual reset at any time. Acknowledgingthe alarm even if the alarm condition is still present resets the relay and turns offthe LED. 26

DFM-6301 Models Program OutputLatching Relay (Lt-CLr) Manual reset only after alarm condition has clearedCondition LED RelayNormal Off OffAlarm On OnAck (no effect) On OffNormal Off OffAck Off OffIn this application, the meter is set up for manual reset only after the signalpasses the reset point (alarm condition has cleared). Acknowledging the alarmwhile it is acknowledged after it returns to the normal state, the LED and the relaygo off. Notice that the LED remains on, even after the meter returns to the normalcondition. This is because, for latching relays, the alarm LED reflects the status ofthe relay, regardless of the alarm condition. Acknowledging RelaysAcknowledge relays programmed for manual reset via the programmable frontpanel function keys F1-F3 (Default: F3 assigned to ACK). 27

DFM-6301 Models Program OutputScaling the 4-20 mA Analog Output (Aout)The 4-20 mA analog output can be scaled to provide a 4-20 mA signal for anydisplay range selected.No equipment is needed to scale the analog output; simply program the displayvalues to the corresponding mA output signal.The Analog Output menu is used to program the 4-20 mA output based on displayvalues. This menu is only available in PD6300-xx5-CS models. For instructions on how to program numeric values see Setting Numeric Values, page 11. 28

DFM-6300 Series Instruction ManualTROUBLESHOOTINGSymptom Check/ActionNo display at allNot able to change setup or Check power at power connectorprogramming, Locd is displayedMeter displays error message Meter is password-protected, enter correctduring calibration (Error) six-digit password to unlockMeter displays Check: 999999 1. Signal connections -99999 2. Minimum input span requirements Check:Display is unstable 1. Input selected in Setup menu 2. Corresponding signal at SignalDisplay reading is not accurate connectorDisplay does not respond to input Check:changes, reading a fixed number 1. Input signal stability and value 2. Display scaling vs. input signalDisplay alternates between Check:1. Hi and a number Scaling or calibration2. Lo and a number Check:Relay operation is reversed Display assignment, it might be displaying max, min, or set point.Relay and status LED do not Press Menu to exit max/min displayrespond to signal readings.If the display locks up or the Check:meter does not respond at all 1. Fail-safe in Setup menuOther symptoms not described 2. Wiring of relay contactsabove Check: 1. Relay action in Setup menu 2. Set and reset points Cycle the power to reboot the microprocessor. Call Technical Support for assistance. Contact information is located on the last page of this manual. 29

DFM-6300 Series Instruction Manual Figure 10: 1/8 DIN Panel Cutout Template 30

FLOW SIMULATOR SIM-100The CST Flow Simulator provides a practical way to simulate the outputsignal produced by CST and other two wire impeller type flow sensors. The simulator uses the irrigation controller flow sensor circuit for power—no batteries required. The simulator connects to flow inputs and field wiring with leads colored the same as flow sensors Red (+) and Black (-). The simulator has 9 selectable output frequencies to cover a full simulated flow range. The simulator works with all CST Isoflow and Combiflow products.APPLICATIONS:Sales— Demonstrate flow reading capabilities of “Smart” irrigation controllers. Turn Simulator OFF to demonstrate “No Flow” conditions. “Learn” zone flow at one setting then switch to high output to show “High Flow” alarms.Installation- Quickly check field wiring and controller inputs before making waterproof splices to flow sensor. Troubleshoot problems quickly and efficientlyCreative Sensory Technology, Inc rev 060412www.creativesensortechnology.com

The Simulator is powered by the flow sensor circuit of the controller or CST device. DO NOT CONNECT TO A POWER SUPPLYThe table below lists the simulated flow in GPM for each CST sensor size at eachfrequency. The frequency is selected by the rotary switch position.Creative Sensory Technology, Inc rev 060412www.creativesensortechnology.com

FLOW SIMULATOR SIM-100 Operating GuideThe CST Flow Simulator provides a practical way to simulate the outputsignal produced by CST and other two wire impeller type flow sensors. The simulator uses the irrigation controller flow sensor circuit for power—no batteries required. The simulator connects to flow inputs and field wiring with leads colored the same as flow sensors Red (+) and Black (-). The simulator works with all controllers capable of reading two wire, digital flow sensors like CST FSI series as well as CST Isoflow and Combiflow products. The simulator has 9 selectable output frequencies to cover a full simulated flow range.Enter a K and Offset pair in the controller flow set-up. Turning the knob to the positionnumbered in the left column will produce the frequency shown in the second column.The controller will display the flow rate* shown in the column below the sensor model.* Due to variations in controller firmware, the displayed flow rates might be approximate.Creative Sensory Technology, Inc rev 100312www.creativesensortechnology.com

FSI-T Series PVC Flow Sensor Creative Sensor Technology FSI series flowsensors feature proven impeller based technologydesigned for flow monitoring/flow control applicationsin irrigation, water conservation and relatedindustries. The PVC sensor with socket connections is offeredfor service in PVC piping systems. Designed by the same team who created theoriginal impeller flow sensor, this sensor is acompletely new custom molded design. The sensorfeatures a digital output signal proportional to flow.The electrical characteristics of the output signalduplicate existing impeller flow sensor signalsmaking the FSI series sensor compatible with allmanufacturer’s control products. The pulse signal will travel up to 2,000 feet withoutamplification. The key elements of this new technology are aproprietary mounting tee, ultra-lightweight impellerand solid state sensing electronics giving the FSIseries sensor improved performance.Applications Flow sensing applications in PVC piping systems above and below grade Flow sensing input to irrigation control systems Flow sensing input to pump monitoring or control systems Flow sensing applications for water recycling, water harvesting or water reclamation applicationsFlow Sensor DimensionsSIZE A B C LENGTH DIAMETER HEIGHT1” 5.625” 1.710” 3.487” (143 mm) (43 mm) (88 mm)1 1/2” 6.188” 2.310” 4.065” (157 mm) (58 mm) (103 mm)2” 7.00” 2.875” 4.573” (178 mm) (73 mm) (116 mm)Allow 33/4” clearance above the branch of the tee to remove flow sensor insert for service. Creative Sensor Technology, Inc. Rev FSI_B15 1114 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-T Series PVC Tee Type Flow Sensor Specifications Size Part number 1 inch FSI-T10-001 Flow Range 11/2inch FSI-T15-001 0.25 to 15 FPS 2 inch FSI-T20-001 FSI-EA0-001 Pressure Rating 240 PSI Maximum working pressure Temperature Range 32ºF to 140º F (0º to 60º C) Wetted Materials Impeller – HDPE (High Density Polyethylene) Mounting Tee - Type 1 PVC O-ring — BUNA N Retaining Nut — Type 1 PVC Sensor Insert — Type 1 PVC Shaft – Tungsten Carbide Output Signal Frequency Range 0.3 Hz to 200 Hz Transducer Excitation - all electronics versions except – sensor suffix 009 Quiescent current 120 uA@8 VDC to 35 VDC max. Off State (VHigh) = Supply Voltage - (120 µA X Source Resistance) On State (VLow) = Max. 0.85 Volts@50mA (10Ω+0.7VDC) Electrical Cable Standard electronics –001 version is equipped with 2 single conductor solid copper #18 AWG leads with direct burial insulation. Lead length 48 inches. Wiring may be extended up to 2,000 feet with direct burial, twisted pair shieldedOrdering Information Description Complete flow sensor Flow sensor insert onlyImpeller Repair Kit FSI-T00-001 Creative Sensor Technology, Inc. Rev FSI_T 0115 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-T Series Flow Sensor Installation GuideIntroduction:Creative Sensor Technologies impeller flow sensors provideaccurate digital output signals proportional to the velocity ofthe liquid flowing through the mounting tee. The squarewave digital signal is converted to flow rate by the receivingmonitor or control device using calibration constantssupplied by CST.The sensor uses the same two wire path for power supplyand signal output. The sensor circuit contains a pre-amplifierallowing the signal to travel up to 2,000 feet using shielded,twisted pair cable.The flow sensor housing, held in place with a retaining nut, contains the detection circuitryand carries the unique four-bladed impeller on a transverse axle. The housing and mountingtee are custom molded to form an integrated measurement chamber resulting in highlyaccurate, repeatable flow measurements through a wide range of velocities. The axle andimpeller along with the sealing o-ring are replaceable in the field.Mechanical Installation– Location and Orientation:Because an impeller sensor measures the velocity of the liquid and converts it to a flowmeasurement based on area, proper flow measurement depends on the condition of thepipe interior and the sensor’s location in the piping system. The pipeline must be full, freefrom trapped air, floating debris and built up sediment. The mounting tee should be installedwith a minimum of 10 diameters of straight pipe (ex. 15 inches for 1 1/2 inch pipe), upstreamand a minimum of 5 diameters of straight pipe (ex. 7 1/2 inches for 1 1/2 inch pipe)downstream to eliminate irregular flow profiles caused by valves, fittings or pipe bends.1. Always install flow arrow on the mounting tee pointeddownstream. Allow 3 3/4” clearance to remove flow sensor housingfrom tee for service. The tee is usually installed with the housing upin the vertical or 12:00 O clock position. However, if necessary, itmay be installed with sensor housing at an angle from vertical toprovide clearance.2. Flow sensors may be installed inside a building, outside abovegrade or underground. If installed above grade, consider securityissues to prevent damage or disassembly. If installed below grade,provide access for service. Creative Sensor Technology, Inc. Rev FSI-T ins 0115 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-T Series Flow Sensor3. Flow sensors are most typically installed below grade in a horizontal section of pipe with the sensor housing up. Do not direct bury the flow sensor. Provide a meter pit or valve box of adequate size and drainage to service the sensor. Provide a service loop in the wire connections to allowing the sensor housing to be brought above grade.4. Flow sensors may be installed on vertical sections of pipe providing that the piping is full and does not contain trapped air. A vertical pipe with rising flow is preferred over falling flow. The sensor housing may be oriented in any direction radially around the pipe.Mechanical Installation– Installing sensor in pipe1. The PVC flow sensor tee features socket ends intended for solvent welding into PVC piping systems. Use Best Industry Practices to insure that the sensor is installed in the correct position with strong permanent joints.2. Disassemble the flow sensor before joining the tee to the piping system. Remove the flow sensor housing from the tee by loosing the retaining nut by turning it counter-clockwise and pulling the housing straight out of the tee.Do not pull on the wire leads!3. Use appropriate tools to cut the pipe. Remove all chips, filings or cuttings from the pipe.4. Solvent weld the tee to the pipe using manufacturer’s recommendations.5. After the joints have set, reattach the sensor housing to the tee. Make sure the housing and tee are clean and free from dirt or debris. Align the arrow on the top of the housing with the downstream direction. This will align the guide key on the housing with the slot inside the tee. Push straight in so that the key enters the slot until the o-ring seals the opening. Slide the retaining nut over the wire leads and tighten by hand by turning clockwise.Do not use sealant or Teflon tape on the retaining nut threads!1. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100 Pg. 2 Rev FSI-T ins 0115

FSI-T Series Flow SensorElectrical Installation—001 suffix sensors1. Two conductors are required to connect the flow sensor to the monitor or control device.2. The RED lead from the sensor is the + (Positive) lead and the BLACK lead from the sensor is the - (Negative) lead. Observe polarity when extending these conductors and connect them to the + and - leads or terminals of the FLOW SENSOR INPUT of the monitor or controller. Do not connect flow sensor to Power or Valve circuits!3. Use a shielded Direct Burial cable with at least one twisted pair of conductors. Multiple pair cable may be used. Use #20 AWG or larger solid copper wire conductors to extend the distance up to 2,000 feet.4. Waterproof the splices. The preferred method is the two part epoxy kit, Scotchlok 3570 as manufactured by 3M. Follow all manufacturer’s instructions.5. Make sure that the flow sensor housing is installed in the tee or the retaining nut is on the wire leads before making the splices.6. Provide a service loop in the cable to allow the flow sensor housing to be removed from the tee and brought above grade for servicing.7. Avoid making splices in the direct burial cable.Calibration ConstantsTo program the monitor to read flow rate in GPM (gallons per minute).Model FSI-TXX-001 (Standard calibration sensor)- Open controller FLOW set-up screen andfind flow sensor “OTHER”. Then, when prompted enter the following:FSI-T10-001 K = 0.322 and Offset = 0.20FSI-T15-001 K = 0.650 and Offset = 0.75FSI-T20-001 K = 1.192 and Offset = 0.94Operation1. Make sure the flow sensor is assembled and the retaining nut is tightened (hand tight) before pressurizing system.2. Fill pipeline and eliminate trapped air.3. Flow sensor should begin transmitting flow immediately, however most monitors and control devices have a flow averaging routine that requires several seconds before the device begins to display flow.4. Always wait for flow to stabilize before setting control limits. Stabilization may take several minutes in large piping systems. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100 Pg. 3 Rev FSI-T ins 0315

FSI-T Series Flow SensorWarrantyCreative Sensor Technology, Inc. (The “Seller”) of 125 Paradise Lane, Rochester, MA02770 warrants to the Original Purchaser (The “Purchaser”) of its products suppliedhereunder to be free from significant defects in material and workmanship under normal useand service for a period of 18 months from the date of shipment by the Seller or 12 monthsfrom the date of installation by the Purchaser, whichever period shall be shorter (“theWarranty Period”), unless otherwise agreed in writing or provided for in a written product-specific warranty.This warranty does not apply to products that are the subject of negligence, accident, ordamage by circumstances beyond Seller’s control, or any improper operation, maintenance,storage, installation or use. This warranty also does not apply to accessory items that werenot manufactured by Seller, all of which are sold “as is” and without warranty by Seller.This warranty does not cover limited life components such as bearings, shafts or impellerswhere wear rate is a function of application and environment.If the Purchaser wishes to make a claim hereunder, he shall send written notice to Seller ofany defect within the warranty period. A failure to provide such notice constitutes a waiver ofthe remedies specified herein. If Seller receives timely notification and if the products areproved to Seller’s satisfaction to have a warranted defect, Seller will, at its own discretion,expense and within a reasonable period of time, either (1) repair, correct or cure thewarranted defect(s), or (2) replace the defective product, or (3) give the Purchaser a refundof the price it paid for the product, prorated where appropriate to adjust for the value of anyproduct accepted and retained by the Purchaser.These remedies shall be the Purchaser’s exclusive remedies (and the sole and exclusiveliability of the Seller) for any defects or deficiencies relating to or arising out of product soldby the Seller. The foregoing limited warranty is exclusive and is in lieu of all other warranties,expressed, implied or arising by law, custom or conduct, including but not limited to theimplied warranties of merchantability and fitness for a particular purpose, which areexpressly disclaimed. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100Pg. 4 Rev FSI-T ins 0115

Frequently Asked Questions Flow Sensors Series FSI-T The following questions have been asked about CST flow sensors. Before calling CST Customer Support, please review to see if your question may be answered here.1. Explain the difference between flow rate and velocity.Flow rate is a measurement of the volume of water moving through the pipeline in a period of time andvelocity is the measurement of its speed. In the United States in non-agricultural irrigation applications,flow rate is most commonly expressed in gallons per minute or gpm. Other common measurements offlow rate are: gallons per hour, liters per second, or cubic feet per minute. All of these aremeasurements of volume per unit of time. Velocity is a description of how far something moves in aperiod of time and is generally stated in feet per second (f/s). Flow rate and velocity are inter-related.Volume changes with the pipe size: 1 foot of water in a 11/2 inch pipe contains .12 gallons 1 foot of water in a 3 inch pipe contains .41 gallons 1 foot of water in a 6 inch pipe contains 1.46 gallons.So, at a constant velocity of 1 f/s the flow rate increases with the pipe size from 7.2 gpm in 1-1/2 inchpipe to 24.6 gpm in 3 inch and to 87 gpm in the 6 inch pipe.1 Conversely, at any given velocity theflow rate goes down as the pipe size goes down. If you keep the flow rate constant, then the velocitygoes up as the pipe size is decreased and the velocity goes down as the pipe size increases.1. To convert f/s to gpm multiply the volume of water in one foot of pipe length times 60 to get the flow rate in gpm for each pipe size.2. How do I size a flow sensor?Flow sensors should be sized to accommodate the range of flows they will measure, rather than matchthe size of the pipeline. Generally accepted design practices recommend that the maximum velocity ofwater in PVC piping systems does not exceed velocities of 5 feet per second (f/s). Keeping the velocitybelow this level helps minimize the effects of water hammer and protects the pipe. In addition, pipesize may be oversized to reduce pressure drop caused by friction losses. Rev 1010

FAQ pg 2Irrigation systems don’t operate at a fixed flow rates; there are always variations in the size of flowzones or differences in the types of sprinkler heads or emitters used. Often times the velocity in thepipeline is far less than the maximum flow and can be so low that it can’t be detected. No flow sensorcan measure down to zero flow. There is always a minimum flow rate or velocity below which there isnot enough energy in the water to turn the impeller and generate a flow signal. CST flow sensorshave a wide measurement range from ¼ foot per second to 15 feet per second. This means that a 2inch flow sensor can easily handle the design flow rate of a 3 inch pipeline without exceeding itsmaximum velocity1. More often, the lower limit of the flow range is far more important. With the newwater conserving technology of stream rotors, micro-sprays and low volume drip emitters, it is easy toreduce irrigation zone flow rates below minimum velocity ranges of line-sized sensors.2 Check theirrigation program or flow zones to determine minimum and maximum flow rates. Then use this tableto select the flow sensor size with the best fit between these ranges.The CST sensor is designed for minimal pressure loss at high velocities, so pressure drop should notbe a concern when reducing sizes.1. 5 f/s velocity in 3 inch Class 200 PVC is 123 gpm. The same flow rate in a 2 inch CST flow sensor is 11 f/s, below itsmaximum range of 15 f/s. So a 2 inch sensor can handle the design flow of a 3 inch pipe.2. At the low end of the range, ¼ f/s in 3 inch Class 200 PVC is 6 gpm while ¼ f/s in a 2 inch flow sensor is just under 3 gpm.Not only will a 2 inch sensor accommodate the maximum design flow rate of 3 inch pipe but it will also measure flow at morecritical lower flow rates.3. What is a K and Offset?K and Offset numbers are the calibration constants used to convert the frequency produced by theturning flow sensor impeller into a measurement of flow rate. When a flow sensor impeller is turnedby the water flowing through the sensor tee, it produces an electrical data signal that is proportional toits speed. The raw signal is measured in pulses per second or frequency. This frequency isconverted into a unit of measure like gallons per minute (GPM) using the formula: FREQUENCY = (GPM / K) – Offset.

FAQ pg 3The K number or “Constant” is a specific multiplier for the unit of measure and tee size for each CSTflow sensor. A second number, called the Offset, is added to the formula to account for the slippageof the impeller in the fluid. Adding this Offset number to the formula improves the sensor accuracy.The K and Offset numbers for gallons per minute are listed for each flow sensor size in the FlowSensor Installation Guide (shipped with each sensor) and they are available by visiting our websitewww.creativesensortechnology.com or by calling customer service at 508-763-8100. Conversionfactors for other units of measurement are available upon request.Remember, the K and Offset numbers are specific for each CST flow sensor size. Do not attempt touse K and Offset numbers from another manufacturer.4. How far away from a controller can I install a flow sensor?Generally speaking, you may install a flow sensor up to 2,000 feet from the controller or otherreceiving device using a shielded and jacketed twisted pair communication cable. The type ofjacketing may vary with the type of installation. For underground installation, the cable must be ratedUF and may require armor or conduit for extreme situations. Size of the conductors is not asimportant as the twisting and shielding because flow sensor signals are more subject to interferencefrom outside sources than from line losses. Outside interference may be generated by electricalwiring for motors, lights or signals that cross or pass close by the flow sensor cable. Interference mayresult in momentary loss of flow signal or an increase in signal frequency resulting in flowmeasurement errors. The chance for interference increases with the increase in distance between theflow sensor and the receiving device. Use good installation practices when installing communicationcables. Also avoid splices in the flow sensor cable if possible. If splices are required, make sure theyare mechanically tight, waterproofed and shielded. In longer runs, over 500 feet, it is always a goodpractice to connect one end (only) of the cable shield to a properly installed 8 foot copper ground rod.5. What is the pressure rating of the flow sensor?CST flow sensors have been burst tested at independent laboratories. The results of thesedestructive tests allow us to rate our 1, 1 ½ and 2 inch sensors at a working pressure of 240 psi.6. Why do I need sections of straight pipe before and after the flow sensor?The straight sections of pipe eliminate distortions in the water flow that cause inaccuratemeasurements. When water moves through a pipeline at the rates associated with pressurizedirrigation systems, it moves at about the same velocity all across the pipe. It moves a little faster inthe center of the pipe and a little slower closer to the inside wall in a predictable shape called aballistic profile. When water is forced to bend around an elbow, the water takes a longer path aroundthe outside than the inside changing the local velocity and distorting the profile. Other distortions maybe caused by valves or fittings that produce eddy currents (swirls in the flow) as they change the pathof the water. If these profile distortions are close to the sensor impeller they will change its speed andproduce inaccurate measurements.

FAQ pg 4The minimum length of straight pipe needed to correct these distortions is generally given as 10 timesthe diameter of the pipe before (upstream of) the flow sensor and 5 times the diameter of the pipeafter (downstream of) the sensor. If possible, provide more than these minimum lengths.7. Is the CST sensor output the same as a Data Industrial sensor?Yes, from an electrical standpoint, the signal output is the same as Data Industrial’s. Any controllerthat will accept a Data Industrial flow sensor input can use the flow signal from a CST sensor. Thereis however, a difference in the calibration constants used to convert the signal into a flow rate. Thecontrol device receiving a flow signal from a CST sensor needs to be reprogrammed to accept theunique K and Offset numbers for each sensor. For help in reprogramming, consult the controlleroperator’s manual or call CST Customer Service.8. Will a flow sensor still work if the pipe isn’t full?It might, depending on how it’s mounted on the pipe, but unless the pipe is full, the measurementwon’t be accurate. The sensor has a small impeller that is turned by the moving water. It measuresthe speed or velocity of the water. The speed is then converted into a volumetric flow using a formulacontaining the conversion factors or K and Offset numbers. These numbers, unique for each sensorsize, are based on the area inside the tee and assume that the area is filled with water.9. Can I measure flow in a vertical pipe?Yes, as long as the pipe is full. If the direction of flow is up and you observe our minimumrequirements for straight pipe, you may assume the pipe is full and the sensor will measureaccurately. If the flow direction is down however, the pipe may not be full unless there is sufficientback pressure. In closed irrigation systems with valves and sprinklers that create backpressure, thenmost likely the pipe is full and the sensor will measure accurately. Be cautious with piping systemsthat have open discharges, it’s common for these to be only partially full.10. Does the sensor need to be installed in a certain position?The sensor may be installed radially around the pipe in any position. Sensor tees are usuallypositioned with the insert located in the 12:00 o’clock position in underground piping systems for easeof service through an access box. In complex installations involving multiple pipelines and equipmentin restricted locations, make sure to install the sensor in a position that allows removal of the insert byproviding at least 3 ¾ inches clearance over the tee. This may require installing the sensor at anangle away from the vertical position.11. What happens if I put the sensor in backwards?The sensor should always be installed with the printed arrow pointing in the direction of flow becausethe calibration constants were developed with flow in this direction.

FAQ pg 5The sensor insert and the tee are keyed so the sensor can only be properlyinstalled in one direction. The sensor insert has a small arrow embossed onits top edge that should point in the same direction as the arrow printed onthe tee. Both of these indicators should point towards the downstream flowin the pipe and away from the source. When installing the insert into thetee, rotate the insert until you feel the ridge enter the guide slot beforetightening the retaining nut.12. Can I use the insert from one size sensor in another size tee? Yes, any CST insert that has a model number ending in -001 may be used in any size FSI series tee. However, there are flow sensor inserts with different electronic configurations that are specific to one size or have different uses. If the last three digits of the model number are not –001, check with CST Customer Service.13. Can I wear out a sensor?Yes, over time, the impeller and shaft may become worn and needto be replaced. Wear depends on how much time the sensor isused, the amount and kind of solids suspended in the water andthe speed or velocity that the water is flowing. Replacement partsare available by ordering the FSI-T00-01 Repair Kit.14. Can I connect a flow sensor to more than one controller? Yes, if you electrically isolate the output to each controller using an Isoflow manufactured by CST or a similar device. Every two wire flow sensor draws its power and sends its signal along the same wires. Connecting any device to two different power supplies may cause problems because of differences in the voltage levels or current cycles. The cross connection of two flow sensor inputs can cause erroneous readings and may cause permanent damage to the controller circuitry.See our website for more information about CST Isoflow devices.

FAQ pg 615. How do I troubleshoot a flow sensor?You think water is flowing but your display reads zero flow. How do you decide if the problem is with theflow sensor or somewhere else? If you could remove the sensor from the mounting tee and spin theimpeller by hand, you could tell instantly. But in a pressurized, water filled piping system, there is rarely away to isolate the sensor and remove it. The next best thing is to eliminate every other possibility in theflow monitoring scheme.A. Check the controller to confirm that the flow sensor circuit is turned on and the correct sensor size andparameters are programmed in.B. Check the piping system. In a looped system, or one with multiple points of connection, it is possible toback feed or provide an alternative path for the water to flow. Make sure that no valves are closedblocking flow to the flow sensor.C. Recheck the wiring to make sure the Red (+) lead of the flow sensor is connected to the + terminal ofthe controller and the Black (-) lead is connected to the – terminal. Make sure to maintain polarity whenextending sensor cables. If the wires are reversed, the sensor will not be harmed, but it will not produce asignal.D. To check all the wiring, splices and the controller circuit, go to the flow sensor and disconnect it fromthe field wiring. Take the bare ends of the field wiring that leads back to the controller and tap (don’t hold)the two wires together at about one second intervals. Touching the wires together will simulate the flowsensor signal and produce a flow rate on the controller display. Tapping the wires together faster willdisplay a higher flow rate. Make sure the controller is in the flow monitoring mode. This might meanstarting a manual program. If the controller displays flow, then the controller and the wire path is good.E. If no flow rate is displayed, then disconnect the field wiring at the flow sensor input terminals of thecontroller, make a jumper out of a short length of wire and perform the “tap test” again across the flowsensor input terminals. If the controller now displays a flow rate, then the problem is in the field wiring, butif not, the problem is in the controller.F. Isolate field wiring problems using the process of elimination. 1. Most wiring problems resulting in “no flow” readings are the result of an open or break in the wire. A short circuit will usually blow a fuse or trip a circuit breaker. 2. Check any known splices first. 3. Check any location where trenching or digging may have crossed the wire path and caused a break. 4. Divide the total distance of the wire path in half and check the integrity of each half with a cable fault finder or ohm meter. 5. Keep dividing the problem length in half to locate the cable break or reduce the problem area to a manageable length.G. When all the above possibilities have been checked and eliminated, then make sure that the system isdepressurized and drained before attempting to change the flow sensor. Serious injury may occur if youloosen the retaining nut of a sensor under pressure.H. Remove the sensor from the tee and with the wires attached, spin the impeller to see if it produces aflow display on the controller. If it does, check to see that it spins freely. If not, remove the impeller bypressing the shaft out of the housing to clean or replace it. Also examine the interior of the mounting teeand remove any foreign material that could hinder the impeller from turning. After cleaning, if the sensordoes not display a flow on the controller, replace the sensor insert.

FSI-S Series SADDLE TYPE FLOW SENSOR Creative Sensor Technology FSI-S series flow sensorsfeature proven impeller based technology designed for flowmonitoring/flow control applications in irrigation, waterconservation and related industries. The saddle type sensor mounts on PVC piping systemsusing a wedge to hold the sections together. Prior toinstallation, an opening is drilled in the pipe allowing thesensor insert to position the impeller inside the pipe. Designed by the same team who created the originalirrigation impeller flow sensor, CST’s sensor is completelynew, not a redesign. The sensor features a digital outputsignal proportional to flow. The output signal duplicatesexisting impeller flow sensor signals making the FSI seriessensor compatible with all manufacturer’s control products. The pulse signal will travel up to 2,000 feet withoutamplification. The insert, held in place with a retaining nut, contains thedetection circuitry and carries the unique four-bladed ultra light impeller on a transverse axle. . The saddle series sensors utilize the same flow sensor insert used in the tee series sensorsThe insert mounts in a housing that controls the depth and alignment of theimpeller unlike insert type sensors that may be mis-aligned or set to the wrongdepth. The housing is permanently attached to the PVC saddle therefore noadditional mounting hardware is required. KEY FEATURES: Flow Range : 3 inch - 6 to 300 gpm 4 inch - 10 to 480 gpm 6 inch - 45 to 1100 gpm Working Pressure Rating: 150 psi @ 90ºF Outputs: 001 Two wire standard pulse 004 Three wire standard pulse 008 Three wire low frequency Creative Sensor Technology, Inc. Rev FSI_S0915 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-T00-000 Flow SensorSpecificationsWetted Materials Impeller – HDPE (High Density Polyethylene) Shaft – Tungsten Carbide O-ring — BUNA N Saddle, Sensor Housing, Retaining Nut — Type 1 PVCPressure Rating Pressure Rated: 150 psi @ 90º F.Temperature Range 32ºF to 140º F (0º to 60º C)Output Signal Frequency Range 0.3 Hz to 200 HzTransducer Excitation Quiescent current 120 uA@8 VDC to 35 VDC max. Off state (VHigh)= Supply Voltage - (120uA X Source Resistance) On State (VLow)= Max. .85 VDC@50mA current limit, (10Ω+0.7VDC)Flow Range 1/4 to 12 FPS - 3 and 4 inch 1/2 to 12 FPS - 6 inchElectrical Cable 2 single conductor solid copper U.L. listed #18 AWG leads with direct burial insulation Lead length 48 inches Wiring may be extended up to 2,000 feet with direct burial, twisted pair shielded cableSensor Dimensions Minimum Clearance Above sensor Required for Removal — 3.75 inches (96 mm)Ordering Information Rev FSI_S0915 FSI-S30-001 3 inch saddle mount 2 wire sensor– includes PVC saddle FSI-S40-001 4 inch saddle mount 2 wire sensor– includes PVC saddle FSI-S60-001 6 inch saddle mount 2 wire sensor– includes PVC saddle.Other electronic configurations available, consult factory.All data is subject to change , consult factory for latest information. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-S Series Saddle Type Flow Sensor Installation GuideIntroduction:Creative Sensor Technologies impeller flow sensors provideaccurate digital output signals proportional to the velocity ofthe liquid flowing through the pipe. The square wave digitalsignal is converted to flow rate by the receiving monitor orcontrol device using calibration constants supplied by CSTand listed on page 4 of this guide.The sensor uses the same two wire path for power supplyand signal output. The sensor circuit contains a pre-amplifierallowing the signal to travel up to 2,000 feet using shielded,twisted pair cable.The flow sensor insert, held in place with a retaining nut, contains the detection circuitry andcarries the unique four-bladed impeller on a transverse axle. The insert attaches to ahousing that controls the location and alignment of the impeller. The housing is mounted ina PVC saddle therefore no additional mounting hardware is required.The axle and impeller along with the sealing o-ring are replaceable in the field.Mechanical Installation– Location and Orientation:Because an impeller sensor measures the velocity of the liquidand converts it to a flow measurement based on area, properflow measurement depends on the condition of the pipe interiorand the sensor’s location in the piping system. The pipelinemust be full, free from trapped air, floating debris and built upsediment. The mounting saddle should be installed with aminimum of 10 diameters of straight pipe (ex. 30 inches for 3inch pipe), upstream and a minimum of 5 diameters of straightpipe (ex. 15 inches for 3 inch pipe) downstream to eliminateirregular flow profiles caused by valves, fittings or pipe bends. 1. Always install with the flow arrow on the sensor pointed downstream. Allow 3 3/4” clearance to remove flow sensor insert from the saddle for service. The saddle is usually installed with the housing up in the vertical or 12:00 o’clock position. However, if necessary, it may be installed with sensor housing at an angle from vertical to provide clearance. 2. Flow sensors may be installed inside a building, outside above grade or underground. If installed above grade, consider security issues to prevent damage or disassembly. If installed below grade, provide access for service. Creative Sensor Technology, Inc. Rev FSI_S ins 1015 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-S Series Saddle Type Flow Sensor3. Flow sensors are most typically installed below grade in a horizontal section of pipe with the sensor housing up. Do not direct bury the flow sensor. Provide a meter pit or valve box of adequate size and drainage to service the sensor. Provide a service loop in the wire connections to allowing the sensor housing to be brought above grade.4. Flow sensors may be installed on vertical sections of pipe providing that the piping is full and does not contain trapped air. A vertical pipe with rising flow is preferred over falling flow. The sensor housing may be oriented in any direction radially around the pipe.Mechanical Installation– Installing sensor in pipe Do not attempt to Hot Tap! The pipe must be drained and depressurized for installationDisassemble the flow sensor.1. Disassemble the flow sensor insert by turning the retaining nut counter-clockwise and pulling the insert housing straight out of the tee. Do not pull on the wire leads! 2. Remove the tapered wedge from the side of the saddle and fold the bottom half of the saddle down to separate it at the hinge. Prepare the Pipe.1. The PVC saddle type flow sensor is attached to the outside of a section of PVC pipe with the same nominal size as the saddle after an entry hole for the sensor insert has been drilled through the pipe. Use Best Industry Practices to insure that the sensor is installed correctly.2. Locate a straight section of pipe with a minimum of 15 diameters of straight pipe. Clean a 12 inch (minimum) section of pipe 10 diameters downstream of any valve, fitting or change in size to mount the saddle.3. Use a 1 ¾ inch hole saw, NO SMALLER NOR LARGER, to drill the entry hole in the center of the cleaned area of the empty depressurized pipe. Make sure the hole is perpendicular to the pipe and centered. Remove the pipe coupon with the saw; do not allow it to fall into the pipe. Remove the burr from the edge of the hole. Creative Sensor Technology, Inc. rev FSI_S ins 1015 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-S Series Saddle Type Flow SensorAttach the saddle. 4. Make sure the o-ring seal is in place on the underside of the saddle around the protruding sensor housing. O-Ring 5. Place the top half of the saddle with the alignment slot inside the sensor housing on the downstream side, over the pipe so that the mount fits into the drilled hole. Mount 6. Attach the bottom half of the saddle to the top half on the hinged side of the top half and close it around the pipe.7. Push the larger end of the tapered wedge over the guides sliding it until the saddle haves are clamped together. The wedge should go on half-way by hand. Finish setting wedge with a couple of taps with a rubber mallet.8. Reassemble the flow sensor insert with the arrow on the top of rev FSI_S ins 1015 the housing in the downstream direction. This will align the guide key on the insert with the slot inside the housing. Push straight in so that the key enters the slot until the o-ring seals the opening. Slide the retaining nut over the wire leads and tighten by hand turning it clockwise. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-S Series Saddle Type Flow SensorElectrical Installation1. Two conductors are required to connect the flow sensor to the monitor or control device.2. The RED lead from the sensor is the + (Positive) lead and the BLACK lead from the sensor is the - (Negative) lead. Observe polarity when extending these conductors and connect them to the + and - leads or terminals of the FLOW SENSOR INPUT of the monitor or controller. Do not connect flow sensor to Power or Valve circuits!3. Use a shielded Direct Burial cable with at least one twisted pair of conductors. Multiple pair cable may be used. Use #20 AWG or larger solid copper wire conductors to extend the distance up to 2,000 feet.4. Waterproof the splices. The preferred method is the two part epoxy kit, Scotchlok 3570 as manufactured by 3M. Follow all manufacturer’s instructions.5. Make sure that the flow sensor housing is installed in the tee or the retaining nut is on the wire leads before making the splices.6. Provide a service loop in the cable to allow the flow sensor housing to be removed from the tee and brought above grade for servicing.7. Avoid making splices in the direct burial cable.Calibration ConstantsTo program the monitor to read flow rate in GPM (gallons per minute).Model FSI-SXX-001 (Standard calibration sensor)- Open controller FLOW set-up screen and find flowsensor “OTHER”. Then, when prompted enter the following:FSI-S30-001 K = 2.75 and Offset = 1.58FSI-S40-001 K = 4.53 and Offset = 1.11FSI-S60-001 K = 10.401 and Offset = 3.308Operation1. Make sure the flow sensor is assembled and the retaining nut is tightened (hand tight) before pressurizing system.2. Fill pipeline and eliminate trapped air.3. Flow sensor should begin transmitting flow immediately, however most monitors and control devices have a flow averaging routine that requires several seconds before the device begins to display flow.4. Always wait for flow to stabilize before setting control limits. Stabilization may take several minutes in large piping systems. Creative Sensor Technology, Inc. Rev FSI_S ins 1015 www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-S00-000 SADDLE TYPEFLOW SENSORSCreative Sensor Technology expands its flow sensor offerings with anew saddle type flow sensor available for 3 inch and 4 inch PVC pipesizes.S Series sensors include the mounting saddle. Sensordepth and alignment are preset. No measuring tools andalignment rods are necessary. Simply drill a 1 3/4 inchhole in the pipe and attach the two halves or the saddle.S Series sensors utilize the same insert and retaining nutas our tee type sensors.FLOW RANGE: 0.25 to 12 fps 3 inch — 6 to 300 GPM 4 inch — 10 to 480 GPMPRESSURE RATING: 150 psi @ 90º F.Creative Sensory Technology, Inc Overview www.creativesensortechnology.com 0911

FSI-B Series Brass Flow Sensor Creative Sensor Technology FSI series flowsensors feature proven impeller based technologydesigned for flow monitoring/flow control applicationsin irrigation, water conservation and relatedindustries. The brass bodied sensor with FNPT connections isoffered for service in metallic piping systems atpoints of connection or on pump assemblies. Designed by the same team who created theoriginal impeller flow sensor, this sensor is acompletely new custom cast design. The sensorfeatures a digital output signal proportional to flow.The electrical characteristics of the output signalduplicate existing impeller flow sensor signalsmaking the FSI series sensor compatible with allmanufacturer’s control products. The pulse signal will travel up to 2,000 feet withoutamplification. The key elements of this new technology are aproprietary mounting tee, ultra-lightweight impellerand solid state sensing electronics giving the FSIseries sensor improved performance.Applications Flow sensing applications where metallic piping is utilized inside buildings or meter pits Flow sensing applications on packaged booster pumps Flow sensing applications on fertigation skids Flow sensing applications for recycled water or water harvesting systemsFlow Sensor DimensionsSIZE ABC LENGTH DIAMETER HEIGHT1 1/2” 5.00” 2.38” 4.07” (127 mm) (60 mm) (103 mm)Allow 3 3/4” clearance above the branch of the tee to remove flow sensor insert from the tee for service. Creative Sensor Technology, Inc. Rev FSI_B15 0115 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-B Series Brass Flow SensorSpecifications Part number FSI-B15-001Flow Range 0.50 to 15 FPS 3 to 90 GPM (11 to 340 LPM)Pressure Rating 250 PSI Maximum working pressureTemperature Range 32ºF to 140º F (0º to 60º C)Wetted Materials Impeller – HDPE (High Density Polyethylene) Mounting Tee & Retaining Nut — Lead free Bronze Alloy C89833 Federalloy® I-836 O-ring — BUNA N Sensor Insert— Type 1 PVC Shaft – Tungsten CarbideOutput Signal Frequency Range 0.3 Hz to 200 HzTransducer Excitation - all electronics versionsexcept – sensor suffix 009 Quiescent current 120 uA@8 VDC to 35 VDC max. Off State (VHigh) = Supply Voltage - (120 µA X Source Resistance) On State (VLow) = Max. 0.85 Volts@50mA (10Ω+0.7VDC)Electrical Cable Standard electronics –001 version is equipped with 2 single conductor solid copper #18 AWG leads with direct burial insulation. Lead length 48 inches. Wiring may be extended up to 2,000 feet with direct burial, twisted pair shielded cable.Ordering Information Description Complete flow sensorFlow sensor insert only FSI-EAB-001Impeller Repair Kit FSI-T00-001 Creative Sensor Technology, Inc. Rev FSI_B15 0115 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-B Series Flow Sensor Installation GuideIntroduction:Creative Sensor Technologys impeller flow sensors provideaccurate digital output signals proportional to the velocity ofthe liquid flowing through the mounting tee. The squarewave digital signal is converted to flow rate by the receivingmonitor or control device using calibration constantssupplied by CST.The sensor uses the same two wire path for power supplyand signal output. The sensor circuit contains a pre-amplifierallowing the signal to travel up to 2,000 feet using shielded,twisted pair cable.The flow sensor housing, held in place with a retaining nut, contains the detection circuitryand carries the unique four-bladed impeller on a transverse axle. The housing and mountingtee are custom made to form an integrated measurement chamber resulting in highlyaccurate, repeatable flow measurements through a wide range of velocities. The axle andimpeller along with the sealing o-ring are replaceable in the field.Mechanical Installation– Location and Orientation:Because an impeller sensor measures the velocity of the liquid and converts it to a flowmeasurement based on area, proper flow measurement depends on the condition of thepipe interior and the sensor’s location in the piping system. The pipeline must be full, freefrom trapped air, floating debris and built up sediment. The mounting tee should be installedwith a minimum of 10 diameters of straight pipe (ex. 15 inches for 1 1/2 inch pipe), upstreamand a minimum of 5 diameters of straight pipe (ex. 7 1/2 inches for 1 1/2 inch pipe)downstream to eliminate irregular flow profiles caused by valves, fittings or pipe bends. 1. Flow sensors may be installed inside a building, outside above grade or underground. If installed above grade, consider security issues to prevent damage or disassembly. If installed below grade, do not direct bury, provide a meter pit or valve box for service. Always provide a service loop in the wire connections to allow the flow sensor insert to be brought above grade. 2. Always install the sensor with the arrow on the tee pointing in the direction of flow. Below grade the sensor is usually installed with the sensor housing up in the vertical or 12:00 O’clock position. Creative Sensor Technology, Inc. Rev FSI-B ins 0115 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

FSI-T Series Flow Sensor4. Flow sensors may be installed on horizontal or vertical sections of pipe providing that the piping remains full and does not contain trapped air. A vertical pipe with rising flow is preferred over falling flow. The sensor insert may be oriented in any direction radially around the pipe. The least favorable mounting position on a horizontal pipeline is straight down or the 6:00 O’clock position due to the chance of sediment fouling the impeller. Allow 3 3/4” of clearance over the sensor insert so it can be serviced.Mechanical Installation– Installing sensor in pipe1. The brass flow sensor mounting tee features female NPT threads for connection to metallic piping systems. Use a thread sealant and “best industry practices” to insure that the sensor is installed in the correct position with strong permanent joints. 2. Before joining the tee to the piping system disassemble the flow sensor to prevent damage. Remove the flow sensor insert from the tee by loosening the retaining nut, turning it counter-clockwise and pulling the housing straight out of the tee. Do not pull on the wire leads! Sensor Insert3. Use threaded pipe nipples or cut and thread the existing pipe. Remove all chips, filings or cuttings from the pipe before installing the sensor tee. For copper pipe, use soldered male thread adapters.4. Install the sensor tee with the arrow pointed in the direction of flow. Tighten both joints with a wrench leaving the area over the branch of the tee clear to install the sensor insert.5. Make sure the insert and mounting tee are clean and free from dirt or debris before reassembly. Align the arrow on the top of the sensor insert with the downstream direction This will align the guide key on the housing with the slot inside the tee. Push straight in so that the key enters the slot until the o-ring seals the opening. Reapply silicon grease to the o-ring if necessary. Slide the retaining nut over the wire leads and tighten by hand by turning clockwise. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100 Pg. 2 Rev FSI-T ins 0115

FSI-B Series Flow Sensor Electrical Installation—001 suffix sensors 1. Two conductors are required to connect the flow sensor to the monitor or control device. 2. The RED lead from the sensor is the + (Positive) lead and the BLACK lead from the sensor is the - (Negative) lead. Observe polarity when extending these conductors and connect them to the + and - leads or terminals of the FLOW SENSOR INPUT of the monitor or controller. Do not connect flow sensor to Power or Valve circuits! 3. Use a shielded Direct Burial cable with at least one twisted pair of conductors. Multiple pair cable may be used. Use #20 AWG or larger solid copper wire conductors to extend the distance up to 2,000 feet. 4. Waterproof the splices. The preferred method is the two part epoxy kit, Scotchlok 3570 as manufactured by 3M. Follow all manufacturer’s instructions. 5. Make sure that the flow sensor housing is installed in the tee or the retaining nut is on the wire leads before making the splices. 6. Provide a service loop in the cable to allow the flow sensor housing to be removed from the tee and brought above grade for servicing. 7. Avoid making splices in the direct burial cable. Calibration Constants To program the monitor to read flow rate in GPM (gallons per minute) Model FSI-B15-001 (Standard calibration sensor) - Open controller FLOW set-up screen and find flow sensor “OTHER”. Then, when prompted enter the following: FSI-B15-001 K = 0.762 and Offset = 0.126 Operation 1. Make sure the flow sensor is assembled and the retaining nut is tightened (hand tight) before pressurizing system. 2. Fill pipeline and eliminate trapped air. 3. Flow sensor should begin transmitting flow immediately, however most monitors and control devices have a flow averaging routine that requires several seconds before the device begins to display flow. 4. Always wait for flow to stabilize before setting control limits. Stabilization may take several minutes in large piping systems. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100Pg. 3 Rev FSI-B ins 0315

FSI-B Series Flow SensorWarrantyCreative Sensor Technology, Inc. (The “Seller”) of 125 Paradise Lane, Rochester, MA02770 warrants to the Original Purchaser (The “Purchaser”) of its products suppliedhereunder to be free from significant defects in material and workmanship under normal useand service for a period of 18 months from the date of shipment by the Seller or 12 monthsfrom the date of installation by the Purchaser, whichever period shall be shorter (“theWarranty Period”), unless otherwise agreed in writing or provided for in a written product-specific warranty.This warranty does not apply to products that are the subject of negligence, accident, ordamage by circumstances beyond Seller’s control, or any improper operation, maintenance,storage, installation or use. This warranty also does not apply to accessory items that werenot manufactured by Seller, all of which are sold “as is” and without warranty by Seller.This warranty does not cover limited life components such as bearings, shafts or impellerswhere wear rate is a function of application and environment.If the Purchaser wishes to make a claim hereunder, he shall send written notice to Seller ofany defect within the warranty period. A failure to provide such notice constitutes a waiver ofthe remedies specified herein. If Seller receives timely notification and if the products areproved to Seller’s satisfaction to have a warranted defect, Seller will, at its own discretion,expense and within a reasonable period of time, either (1) repair, correct or cure thewarranted defect(s), or (2) replace the defective product, or (3) give the Purchaser a refundof the price it paid for the product, prorated where appropriate to adjust for the value of anyproduct accepted and retained by the Purchaser.These remedies shall be the Purchaser’s exclusive remedies (and the sole and exclusiveliability of the Seller) for any defects or deficiencies relating to or arising out of product soldby the Seller. The foregoing limited warranty is exclusive and is in lieu of all other warranties,expressed, implied or arising by law, custom or conduct, including but not limited to theimplied warranties of merchantability and fitness for a particular purpose, which areexpressly disclaimed. Creative Sensor Technology, Inc. www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100 Pg. 4 Rev FSI-B ins 0115

1 1 — 3 2 3 4 241 CST FLOW SENSOR INSTALLATION

PART 1 - Tee Type Flow Sensor for PVC Piping Systems1.1 Mechanical SpecificationsA. The Tee Type PVC Flow Sensor shall be FSI Series manufactured by Creative Sensor Technology, Incorporated of Rochester, Massachusetts. The Model number shall include the Series designation followed by a three character group beginning with T and followed by a two digit code referencing line size followed by a three digit electronic version designator. Therefore, the model number for a one inch size flow sensor with standard electronics would be written as: FSI-T10-001. The flow sensor shall consist of a custom molded tee shaped body with socket ends conforming to PVC pipe dimensions, a flow sensor housing containing the electronic circuitry and carrying the spinning impeller and a retaining nut.B. The meter body shall be an in line type available in 1\", 1 1/2\"and 2” pipe sizes, molded from Rigid Polyvinyl Chloride material – color white - conforming to ASTM D-1784, Cell Class 12454.C. The 4 blade impeller (paddle wheel) shall be the only moving part.D. The impeller shall be molded of HDPE (High Density Polyethylene) incorporating an integral bearing. The shaft material shall be tungsten carbide. These two items are considered wear items and shall be replaceable in the field without special tools.E. The electronics housing, molded from the same material as the body shall be held in place with a single ACME threaded PVC retaining nut held captive by the wire leads. The housing will be sealed with one BUNA N O-Ring and shall be easily removed from the meter body. The electronics housing and tee body shall feature direction of flow arrows to assist in assembly.F. The sensor electronics will be epoxy-sealed and fitted with 2 single conductors solid copper U.L. listed #18 AWG leads with direct burial insulation 48 inch in length extending from the top of the sensor. The positive (+) lead shall have red insulation and the negative (-) lead shall have black insulation.G. The housing and mounting tee are custom molded to form an integrated measurement chamber resulting in highly accurate, repeatable flow measurements through a wide range of velocities.H. The flow sensor shall be designed to schedule 40 specifications and have a tested working pressure of 240 psi @ 73°F (23°C). Maximum working temperature is 140°F (60°C). rev 071515

I. The sensor flow range shall be 0.25 to 15 FPS. J. The Product Serial Number shall be printed on shrink tubing and attached to the wire leads as they exit the top of the electronics housing. K. The Product Model Number shall be printed on shrink tubing and attached to the wire leads above the Product Serial Number.1.2 Wiring and InstallationA. The flow sensor shall be installed with a minimum of 10 diameters of straight pipe upstream, and a minimum of 5 diameters of straight pipe downstream to eliminate irregular flow profiles caused by valves, fittings or pipe bends.B. The flow senor shall be installed a valve box or meter pit of sufficient size to provide access to the flow sensor for service.C. The installed sensor shall require a minimum clearance of approximately 4 inches (100 mm) above sensor for removal of the electronics housing.D. Watertight Wire connections shall be made in the valve box using industry accepted methods and sealing products.E. The maximum wire run between flow sensor and the controller shall be 2,000 feet if a 20/2 twisted pair shielded cable is used.F. The flow sensor electronics shall carry a five-year exchange warranty.1.3 Electrical SpecificationsA. The flow senor shall have an output Frequency Range of 0.3 Hz to 200 Hz.B. The flow sensor shall output a minimum of a 5-millisecond low pulse at low frequencies and reverts to approximately a square wave above 100 Hz.C. Quiescent current 120 uA@8 VDC to 35 VDC max.D. On State (VLow)= Max. 0.85 VDC@50mA (10Ω+0.7VDC) max. rev c 071515

TECH BULLETIN 1110 Flow Sensor InstallationAlways install a flow sensor in a straight section of pipe where there is a minimum of 10diameters upstream (ahead) and a minimum of 5 diameters downstream (behind) of the flowsensor. Pipe bends, other fittings, valves, pipe enlargements or reductions or anything elsethat would cause a flow disturbance should not be present in this length of pipe.If the flow sensor is installed below grade, provide access to the sensor by installing a valvebox or meter pit over it. In underground installations, sensor tees are usually installed with theinsert located in the 12:00 o’clock or straight up position to make removal easier. The sensoris supplied with 48” wire leads. When splicing the leads to an extension cable, be sure toleave an adequate loop of wire to allow the sensor insert to be brought above ground level forservice while still remaining spliced. Creative Sensor Technology, Inc. Rev FSI_T1110 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

TECH BULLETIN 0810 Flow Sensor Operating RangeCST flow sensors use a rotating impeller to sense the water moving through the closed pipe. Thespeed of the impeller rotation is proportional to the velocity of the liquid. As the impeller turns, itproduces digital pulses. The relationship between velocity and volumetric flow rate is dependent onthe size of the pipe and may be calculated using the formula Qgpm = Vfps X D2 X 2.45 where Q is theflow rate in gpm, V is velocity in fps and D is the inside diameter of the pipe in inches. The pipe mustbe full for the rotational speed of the impeller to accurately reflect flow.CST FSI Series flow sensors measure flow over a range from 0.25 fps to 15 fps. Size the flowsensor for the flow rates that need to be measured, not the pipe size. The most common mistakein selecting a flow sensor is to oversize the unit and not be able to measure low flow . The flow sensorwill operate at significantly higher velocities than commonly used for sizing pipe. Note: a 2” flow sensorhas an operating range high enough for use with 3 or 4 inch diameter pipelines running at lower veloci-ties. If the system flow rate falls below the minimum shown in these tables, use a smaller diameterflow sensor installed in a “meter run”- a section of pipe containing 10 diameters of straight pipe aheadof the sensor and 5 diameters of straight pipe after the sensor, as shown below. DIRECTION OF FLOWThe table below shows the flow rate of each sensor size within its operating range. The pressure dropthrough the sensor at maximum flow rates are included for reference.Flow Sensor Model FSI-T10-000 FSI-T15-000 FSI-T20-000 FSI-S30-000 FSI-S40-000Nominal Pipe Size 1 \" 1 1/2\" 2\" 3\" 4\" Feet/Sec GPM GPM GPM GPM GPMMinimum Flow 0.25 0.86 1.8 2.8 6 10 1 3.5 7.24 11.3 25 40 2 7 14.5 23 50 80 3 10.4 22 34 75 120 5 17 36 57 125 200 7 24 51 79 175 280 10 35 72 113 250 400 12 42 87 136 300 480Maximum Flow 15 52 108 170Friction Loss at Max Flow 0.25 psi 0.18 psi 0.15 psi 0.15 psi 0.15 psiAll calculations are made using Class 200 PVC pipe dimensions.Maximum velocity in saddle type sensors is 12 fps. Creative Sensor Technology, Inc. Rev FSI_T0911 www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100

ISF-302 IsoflowThe Model 302 Isoflow is a signal controldevice that receives the signal from one digitalflow sensor and provides two electricallyisolated outputs.The Isoflow is compatible with all CST flowsensors and most other sensors producing asquare wave output proportional to flow rate.It is not compatible with Hunter HFS sensors.The Isoflow also provides optional controlinputs allowing the device to selectively switchoutputs from one channel to the other or both.Control inputs are also electrically isolatedfrom each other, the flow input and outputsand the power supply.The Model 302 features five LEDs to indicate DIMENSIONSoperating conditions and aid in diagnostics.APPLICATIONS Electronics potted in ABS shell. Overall size 3”X1.5”X 1” high. Allow one flow sensor to simultaneously provide flow information to two irrigation All leads are 20 AWG color coded 8” long controllers. In the case of smart control- lers, the control inputs allow the active SPECIFICATIONS controller to block the flow signal to the inactive controller eliminating alarms for Power Supply Voltage: 12-24 VAC or DC non-scheduled flow. Sensor Input: Up to 24 V pulse (~4.5 volt switch level) Allow one flow sensor to simultaneously Control Inputs: 12-24 VAC or DC provide flow information to an irrigation Signal Outputs: Open collector (10 mA controller and a pump control. sinking) Allow one flow sensor to simultaneously ORDERING INFORMATION provide flow information to a pump control and a fertigation controller. Order part number ISF-302-00 Allow one flow sensor to simultaneously provide flow information to pump controls and a SCADA system. Creative Sensor Technology, Inc. Rev ISF_0514 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

ISF-302 ISOFLOWInstallation GuideIntroduction:The Isoflow Model 302 has been developed to allow two (2) irrigation controllers or othercontrol devices to share one (1) flow sensor by electrically isolating its flow outputs.Additionally, two control inputs are provided allowing the flow output signals to be switchedoff by an external signal. The ISO2 is compatible with all CST flow sensors and many othersensors producing a square wave output proportional to flow rate. It is not compatible withHunter HFS sensors.Example of Control Input Use:Smart irrigation controllers monitor flow continually to check for leaks or stuck valves. If twocontrollers are sharing a sensor and one starts an irrigation cycle, the other controller mayinterpret the flow input as unscheduled flow and trigger an alarm. Connecting the mastervalve outputs of both controllers to the Isoflow control inputs, will allow the active controllerto block the flow signal to the inactive one preventing a nuisance alarm.Applications: Share one flow sensor between two irrigation controllers Share one flow sensor between an irrigation controller and pump controls Share one flow sensor between pump controls and a fertigation system Mounting Instructions:The Isoflow circuitry is fully encapsulated in a watertight epoxy. The preferred location isindoors or inside a controller pedestal. The enclosure may be attached to any flat surface,vertical or horizontal, using the mounting tabs or double sided adhesive tape, where theLEDs are visible to assist in set-up or troubleshooting. Creative Sensor Technology, Inc. Rev ISF Ins 0715 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100

ISF-302 ISOFLOW Page 2 of 5Wiring Instructions:Typically, the Isoflow is mounted in the pedestal or enclosure of one irrigation controller andpowered by the same. Four conductors are necessary to connect the flow output and controlinput from the other controller to the Isoflow. If the two controllers are not close together, installappropriate communications cable between the two. Red Flow Sensor Input + Orange Control Input from B - Black Flow Sensor Input - Blue Control Input from B + Orange/white Control Input from A - Yellow Power In Blue/white Control Input from A +Yellow/white stripe Power In Red Flow output to B + Black Flow output to B - Red/white Flow output to A + Black/white Flow output to A -All connections are made to the 20 AWG color coded conductors as shown.1. Connect flow sensor wires from the field to the solid Red and Black flow input leads adjacent to the two Yellow power leads. Observe correct polarity.2. Connect the solid Red and Black leads on the opposing side of the Isoflow to flow inputs on controller B. Again observe polarity.3. Connect Red/White and Black/White flow output leads to flow inputs on controller A. Observe polarity.4. Connect the Yellow and Yellow/white leads to the 24 VAC auxiliary power supply of either irrigation controller. If the controller is not equipped with auxiliary power terminals, provide a separate 24 VAC power supply. Isoflow will now provide isolated flow signals to two controllers. Both controllers will receive the same flow signal whether or not they are actively operating zone valves. To prevent a controller in the off mode from issuing an “unscheduled flow” alarm, see below. The Isoflow will actively control (switch off) either flow output if 24 volt power is applied to the Orange and Blue control circuit leads. Use the master valve (or pump start) circuit of an active controller to signal the Isoflow to block flow to an inactive controller. The output must produce 24 Volts when the controller is active. So, if a Normally Open Master valve is used, connect the control lead to the Pump Start. To block the flow signal on output B, apply 24 volt power across the Orange and Blue leads of Control Input A.5. Connect Blue lead to Master Valve terminal (or Pump Start terminal) on controller B.6. Connect Orange lead to MV Common terminal (or Pump Start terminal) of controller B.7. Connect Blue/White lead to Master Valve terminal on controller A.8. Connect Orange/White lead to MV Common terminal on controller A.When both controllers are inactive- the flow signal is directed to both controllers. When controller A is activeand B is not, the flow signal is blocked to controller B preventing unscheduled flow alarms. When controller Bis active and A is not, the reverse condition occurs. When both controllers are active, the flow signal isdirected to both. Creative Sensor Technology, Inc. Rev ISF Ins 0715 www.creativesensortechnology.com PO Box 426, Rochester, MA 02770 Ph: 508-763-8100

ISF-302 ISOFLOWPage 3 of 5 The Isoflow will not isolate the master valve. It uses the mv (or pump start) circuitry for a control input only.If the master valve will be operated from controllers with two different power supplies, use isolation relays as diagrammed below. Creative Sensor Technology, Inc. Rev ISF Ins 0715 www.creativesensortechnology.comPO Box 426, Rochester, MA 02770 Ph: 508-763-8100