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Fox Thermal FT1 Instruction Manual
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Fox Thermal FT1 Instruction Manual

Gas mass flow meter
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FT1
Fox Thermal Gas Mass Flow Meter
Instruction Manual
Document #106012
Rev L
831.384.4300 | 399 Reservation Rd, Marina, CA 93933 |
foxthermal.com

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Summary of Contents for Fox Thermal FT1

  • Page 1 Fox Thermal Gas Mass Flow Meter Instruction Manual Document #106012 Rev L 831.384.4300 | 399 Reservation Rd, Marina, CA 93933 | foxthermal.com...
  • Page 3 Please note that Fox Thermal reserves the right to change and/or improve the product design and specification without notice.
  • Page 4 Model FT1 Table of Contents 1. Introduction p. 6-18 a. Quick Start Guide ............... . . p. 6 b.

  • Page 5: Table Of Contents

    Model FT1 Table of Contents 6. Maintenance p. 87-97 a. Safe Meter Removal from Retractor ............p. 89 b.
  • Page 6 Check the remaining flow meter settings by accessing the meter settings either through the front panel of the display or by using the FT1 View™ software tool. Record the settings in the spaces given for items A - E on the following page.
  • Page 7 After applying power to your meter, check items A - E below by accessing the meter settings either through the front panel of the meter's display or by using the FT1 View™ software tool. Which flow units have been set in meter? (SCFM, KG/H, etc..)
  • Page 8 Model FT1 Introduction Fig. 1.1: FT1 Menu Tree - Main Menu Enter menu by scrolling to display 4 and entering the password MAIN MENU I/O FLO DSP EXIT Display Menu, p. 12 Flow Menu 1, p. 10 If RS485 hardware detected...
  • Page 9 Model FT1 Introduction Fig. 1.2: FT1 Menu Tree - Digital Outputs MAIN MENU I/O    FLO    DSP    EXIT Set I/O             PUL    420    EXIT Not used OUT= Pulse Pulse NXT                            OK HiFloAlm LoFloAlm HiTempAlm LoTempAlm Pulse Alarm output SystemAlm Select 1 of  3  methods to scale  the pulse output High Flow Alarm Pulse Output OUT= HiFloAlm P/U     U/P     FEQ    EXIT NXT                            OK HiFloAlm=500 SCFM PLS/UNT=2 UNT/PLS=0.5 MaxFreq=100Hz CHG                          OK CHG                            OK CHG                            OK...
  • Page 10 Model FT1 Introduction Fig. 1.3: FT1 Menu Tree - Flow Menu 1 MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT Flow Menu 2 Menu, p. 11 DIAGNOSTIC FLO UNT=SCFM SCFM SCFH SIM CAL-V EXIT NM3/H...
  • Page 11 Model FT1 Introduction Fig. 1.4: FT1 Menu Tree - Flow Menu 2 MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT FLOW MENU 2 GAS SPC PRM EXIT Parameters Level 2 password Flow cutoff in selected units K fact = 0% Cutoff=12.5 SCFM...
  • Page 12 Model FT1 Introduction Fig. 1.5: FT1 Menu Tree - Display Menu MAIN MENU I/O    FLO    DSP    EXIT DISPLAY/PASSWORD DSP            PSW    EXIT Display 1  Line 1 FLo rate DSP1L1=FLo rate PASSWD=1234 Total NXT                             OK CHG                            OK Elps Display 1  Temp Line 2 Alarm FLo rate DSP1L2=Total Total NXT                             OK Elps Display 2  Temp Line 1 Alarm FLo rate DSP2L1=temp Total NXT                             OK...
  • Page 13 Model FT1 Introduction Fig. 1.6: FT1 Menu Tree - CAL-V™ Menu MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT DIAGNOSTIC SIM CAL-V EXIT CAL-V MENU EXIT VERIFY CAL-V? Hold value Flo: Hold value Go to zero...
  • Page 14 Model FT1 Introduction Fig. 1.7: FT1 Menu Tree - Gas-SelectX Menu ® MAIN MENU I/O    FLO    DSP    EXIT The most recent list of available gases can be found on the Fox Thermal website: FLOW MENU 1 DGN   UNT   FM2   EXIT www.foxthermal.com/products/FT1.php#gasSelectX FLOW MENU 2 GAS    SPC    PRM    EXIT Methane GAS=Methane GAS=%Mix Select up to five gases for Gas  NXT      OK NXT  ...
  • Page 15 Number of errors in total flow measurement CAL-V= 0.1 CAL-V™ measurement value Screen 19 Fig. 1.9: FT1 Menu Tree - Reset Flow Total F3 & F4 pressed at the same time will initiate a "Total" reset F3 & F4 pressed at the same time will initiate a "Total"...
  • Page 16 Introduction Welcome Thank you for purchasing the FT1 thermal gas mass flow meter from Fox Thermal. The FT1 is one of the most technically advanced flow meters in the world. Extensive engineering effort has been invested to deliver advanced features, accurate measurement performance and outstanding reliability.
  • Page 17 Fox Thermal's DDC-Sensor™ provides a technology platform for calculating accurate gas correlations. The FT1 correlation algorithms allow the meter to be calibrated on a single gas in the factory while providing the user the ability to select other gases in the Gas-SelectX gas menu.
  • Page 18 Configuration Panel for field configuration of flow meter settings such as gas selection, 4-20mA scaling, pulse output scaling, pipe area, flow cutoff, flow filtering, display configurations, diagnostics, communication parameters, and alarm limits. Fig. 1.10: FT1 Function Diagram Standard I/O 12-24VDC...
  • Page 19 Model FT1 Installation Installation Scope This section describes how to install the Fox Thermal FT1 Flow Meter and how to get started. Installation methods will vary according to the flow meter type (insertion or inline). For Insertion Types: 1. Determine lateral position on the pipe.
  • Page 20 Instructions for Flow Meter Lateral Placement Install the FT1 flow meter so that it is far enough away from bends in the pipe, obstructions, or changes in line sizes to ensure a consistent flow profile. See Fig. 2.1 below for your meter type.
  • Page 21 Fig. 2.2: Installation at 180º Alternate Installations - Vertical Pipes or Restricted Installation Spaces When restricted physical installation space exists, the FT1 can also be installed at other angles. Please note that the display and the enclosure orientation can be rotated in 90º increments.
  • Page 22 2. Assemble the compression fitting and branch fitting hand tight onto the probe of the FT1. 3. Insert the probe into the hole in the pipe and use the FT1 probe and compression fitting to align the branch fitting with the hole and the probe perpendicular to the pipe.
  • Page 23 Model FT1 Installation Installation Depth The installation depth of the sensor in the pipe is dependent on the pipe size. To get the most accurate reading, proper placement of the sensor window within the pipe is necessary. As shown in Fig 2.5, the end of the sensor window should be 0.73" (18.5 mm) past the center line of the pipe.
  • Page 24 Installation Rotating the Enclosure The FT1 enclosure has been designed to allow the enclosure to rotate for optimal viewing of the display. To rotate the enclosure, first loosen the two set screws near the Flow Direction Indicator, then unscrew and remove the flow direction indicator. Rotate the enclosure into the desired position, reinstall the flow direction indicator pointing in the direction of flow, and tighten the set screws.
  • Page 25 Model FT1 Installation Changing the Orientation of the FT1 Display The optional display can be rotated in 90° increments for optimum viewing of the screen. First, open the enclosure by unscrewing the enclosure cap and loosen the two captive screws to open the display assembly.
  • Page 26 Installation Mounting Instructions - Compression Fittings The FT1 insertion style flow meters are mounted through a 0.781" hole and a 1-inch female NPT branch outlet in the customer's pipe. Insertion style flow meters are not designed for use in pipes smaller than 1½".
  • Page 27 Model FT1 Installation Mounting Instructions - Compression Fittings (Inline and Insertion Meters Previously Installed) In cases where a compression fitting has already been swaged in an inline flow body or an insertion meter, use the following procedure. • Carefully insert the probe with swaged ferrules into the fitting until the front ferrule seats against the fitting (see Figure 2.9).
  • Page 28 Model FT1 Installation Installation of a New Retractor Assembly 1. Remove collar clamp from probe using a 3/16" Hex Key. 2. Remove meter probe from retractor assembly and leave the ball valve open. Keep the collar spacer on the probe so it is not misplaced. The retractor clearance table of Figure 2.12 lists the space required to remove the meter from the retractor.
  • Page 29 Model FT1 Installation 4. Carefully slide the probe through the retractor assembly and through the hole to see if there is interference by carefully touching the pipe wall with the end of the probe on the far side or until the probe cannot go deeper.
  • Page 30 Model FT1 Installation 5. The installation depth of the sensor is dependent on the pipe size. To get the most accurate reading, proper placement of the sensor window within the pipe is necessary. As shown in Figure 2.12, the end of the sensor window should be 0.73" (18.5 mm) past the center line of the pipe. Review the dimensional drawing below, use equation (L + D/2 + 0.73") to calculate insertion depth and mark it on...
  • Page 31 Model FT1 Installation 7. Insert probe back into the retractor to the depth mark and hand-tighten the compression fitting. Make sure collar spacer is in place on the probe. 8. Verify that flow direction indicator is in line with pipe and in the direction of flow.
  • Page 32 Model FT1 Wiring Wiring Instructions To wire the FT1 connect the power and signal wires to the terminal blocks according to the label and instructions on the following pages. Fig. 3.1: FT1 Wiring Access Loosen these two screws to open the display and access wiring terminals.
  • Page 33 All plumbing and electrical installations of flow meters must be in compliance with local codes, the end user’s best engineering practices, and manufacturer’s recommendations. • Do not install the FT1 enclosure near an igniter, igniter-controller or switching equipment to eliminate the possibility of noise interference. •...
  • Page 34 6 Watts minimum. (With 12VDC power, the FT1 can use up to 500mA. With 24VDC power, the FT1 can use up to 250mA.) A 20 Watt or greater power supply is recommended to ensure it can provide enough current under all temperature, ventilation, and power on conditions.
  • Page 35 Model FT1 Wiring 4-20mA Output Wiring: Customer-Supplied Power Source (Recommended) Bring the wiring in through either conduit hub. Connect the 4-20mA flow rate, 4-20mA temperature, and HART communication option wiring as shown in the diagram below. Fig. 3.3: 4-20mA Output Wiring for Isolated Customer-Supplied Power Source...
  • Page 36 Bring the wiring in through either conduit hub. Connect the 4-20mA flow rate, 4-20mA temperature, and HART communication option wiring as shown in the diagram below. Fig. 3.4: 4-20mA Output Wiring for Loop Power Provided by FT1 Customer PLC or DCS...
  • Page 37 The pulse/alarm output is an open collector circuit capable of sinking a maximum of 20mA of current. Pulse or alarm selection is programmed using the display or FT1 View™. Only one option, pulse or alarm, can be active at a time.
  • Page 38 The pulse/alarm output is an open collector circuit capable of sinking a maximum of 20mA of current. Pulse or alarm selection is programmed using the display or FT1 View™. Only one option, pulse or alarm, can be active at a time.
  • Page 39 Termination Resistor Connect a termination resistor across the receive/transmit signals of the last device on the communication line. To connect the 121 ohm termination resistor on the FT1, set jumper W1 to the Terminated position, see detail below. Disconnect the termination resistor on all other external RS485 devices. The termination resistor of the FT1 is disconnected by setting jumper W1 to the "open"...
  • Page 40 Model FT1 Wiring HART Wiring The HART connections are made as shown in the diagram below. NOTE! Meters ordered with HART will be configured for flow as default. If the customer changes the 4-20mA output to temperature, HART should report temperature.
  • Page 41 Model FT1 Wiring HART 4-20mA Output Wiring: Handheld Communicator The 4-20mA current loop connections are made as shown in the diagram below. A hand-held HART communicator can be connected to test points TP12 (+) and TP13 (-) with clip leads or to the 4-20mA terminal block.
  • Page 42 HART 4-20mA Output Wiring: Loop Power Provided by FT1 The 4-20mA current loop and HART modem connections are made as shown in the diagram below. Fig. 3.10: HART 4-20mA Output Wiring, Loop Power Provided by FT1 Customer PLC or DCS...
  • Page 43 USB interface and allows data monitoring, configuration setting, and data logging to Excel. FT1 Display and Configuration Panel The FT1 has an optional 2 line x 16 character display with 4 mechanical buttons. The meter can be programmed by using the display and configuration panel. The configuration panel can be accessed by removing the FT1 cap.
  • Page 44 Pressing the F1 and F2 keys at the same time enters the Engineering Menu screens (refer to p. 15). Pressing the F3 and F4 keys at the same time brings up the Reset Total screen prompt (see p. 60). Fig. 4.2: FT1 Measurement Mode Display Screen Navigation F1 key: Moves up one screen F2 key: Moves down one screen 1456.5 SCFM...
  • Page 45 Model FT1 Operation Programming: Data Entry using the Display and Configuration Panel There are 2 basic types of menu entries: one for changing value or string and one for selecting from a selection list. To Change a Value or String : VALUE = 0.91234...
  • Page 46 Model FT1 Operation If the wrong password is entered, the message “Wrong Password” will display and then return to the programming entry screen. Main Menu If the password is accepted, the Main Menu screen will be shown: MAIN MENU EXIT This is the Main Menu screen for the programming mode.
  • Page 47 Model FT1 Operation 4 mA = 0 SCFM Enter the value for the 4mA and press OK (F4). NOTE! When the flow rate exceeds the programmed value for the 20mA set point, the analog output will stay at 20mA and an alarm code will be generated.
  • Page 48 Model FT1 Operation Pulse/alarm Output The Pulse/alarm feature can be accessed from the Main Menu, press I/O (F1). EXIT Press OUT (F1) to select the pulse output. The following screen will show: OUT = Pulse Press NEXT (F1) to cycle through output options until you have the selection for "OUT=Pulse" and press OK (F4).
  • Page 49 MaxFlo=5000 SCFM NOTE! If the flow rate exceeds the maximum pulse rate (frequency), the output will stay at 100 Hz and the FT1 will issue an alarm code. Alarm Output To access the Pulse/alarm feature, press I/O (F1) key from the Main Menu screen. The screen will...
  • Page 50 Model FT1 Operation OUT = HiFloAlm Then press NXT (F1) to select the correct alarm and press OK (F4). Selections are: Not used Pulse HiFloAlm = High Flow Alarm LoFloAlm = Low Flow Alarm HiTempAlm = High Temperature Alarm LoTempAlm = Low Temperature Alarm System Alarm When the output is set to Alarm and there is no alarm condition, the output will be on (0 volts).
  • Page 51 Model FT1 Operation Options for serial communication are: None Modbus BACnet HART NOTE! Any selection other than “None” requires the communication option for the selected communication type. If enabling a communication option, see the Communications Protocols section of this manual.
  • Page 52 Model FT1 Operation When the selection is correct, press OK (F4) to accept. The display will then go through the same process for all 4 lines of the 2 programmable displays (DSP1L1, DSP1L2, DSP2L1 and DSP2L2). After the last line of Display 2 is accepted, the display will show the following menu: ALTERNATE = Off This menu allows you to alternate between menu display 1 and 2 every few seconds.
  • Page 53 These values will be set at Fox Thermal using information supplied by the customer. These values can be changed to match a new application. The units setting is accessed from the Main Menu. To access...
  • Page 54 Model FT1 Operation Temperature Units After pressing OK (F4) to accept the Flow unit the display will prompt for the temperature unit setting: TMP UNT= ° F Press NXT (F1) to change selection and OK (F4) to accept. Selections for Temperature units are: °C or °F...
  • Page 55 Model FT1 Operation Accessing Flow Parameters and Alarm Settings This is the menu used to set various flow parameter values. They are: Flow cutoff, pipe diameter, filter, high and low alarm for flow and temperature. NOTE! The parameters in this menu are set to the customer specifications at the factory. They should only be changed when changing the application of the flow meter.
  • Page 56 These alarms can be used without the digital output assigned to the alarm. If that is the case, the alarm status will only be shown on the display, through serial communication, or FT1 View™. If the digital output is assigned to an alarm, changing the value here will change that setting.
  • Page 57 Make sure to return all of these simulation values to zero, before returning to the normal mode of operation. CAUTION! FT1 outputs (pulse/alarm) - when in simulation mode - may affect the user's system. The user should ensure that this simulation state of operation cannot cause a hazardous or destructive event.
  • Page 58 Model FT1 Operation The menu is accessible from the Main Menu by pressing FLO: FLOW MENU 1 EXIT Pressing DGN (F1) will show: DIAGNOSTIC CAL-V EXIT Pressing SIM (F1) will show: Simulate Flow? Press YES (F1) to continue. FloSim = 0 SCFM Enter the value and then press OK (F4).
  • Page 59 NOTE! Simulation Mode will be exited if the power is cycled. K Factor The K Factor allows the user to adjust the meter’s calibration. The Fox Thermal flow meter increases the calculated flow rate by the K Factor. This results in a direct scaling of the meter’s output across the entire full range.
  • Page 60 Reset CRC If the NVRAM CRC check fails (Error Code 36), the programmed settings values will need to be verified and corrected before clearing the error. Call Fox Thermal Customer Service if you need assistance. RESET CRC? Press YES (F1) ONLY if you want to reset the CRC and generate a new CRC value.
  • Page 61 If the CAL-V™ test does not produce a "PASS" result, refer to "CAL-V™ Test Results" on page 63. NOTE! If the CAL-V™ test is performed using the Fox Thermal FT1 View™ Software, at the completion of the test, a CAL-V™ Certificate may be printed for a record of the test. This certificate will display a pass/fail result.
  • Page 62 Model FT1 Operation Press DGN (F1). The display will show: DIAGNOSTIC MENU CAL-V EXIT Press CAL-V (F2). The display will show: CAL-V MENU EXIT Press VER (F1) to perform the CAL-V™ verification test. VERIFY CAL-V? Press YES (F1) to continue.
  • Page 63 Remove the probe from the pipe, clean the sensor, and perform the test again under a normal or high flow rate. If a "Warning or "Fail" result is displayed after repeating the test, please call Fox Thermal Service at (831) 384-4300 for assistance.
  • Page 64 NOTE! For the latest gas and gas mix menu, visit the Fox Thermal Website: www.foxthermal.com After installing your FT1 flow meter, power up the device. When the meter finishes initializing, it will begin to monitor flow in the assigned gas and flow units.
  • Page 65 Model FT1 Operation FLOW MENU 2 EXIT Press GAS (F1) to access the Gas-SelectX feature. The display may show: ® GAS=Methane From this screen, the user will be able to access two aspects of the Gas-SelectX® Menu: 1. Pure Gas = Choosing from a list of available gases, or 2.
  • Page 66 Model FT1 Operation To create a gas mix, choose %Mix from the list and press OK (F4). GAS= %Mix NOTE! • Gas mix total (sum of percentages) must equal 100% • Any gases not included in the gas The screen will show:...
  • Page 67 Press OK (F4) to set the mixture. ® The FT1 will begin to monitor flow based on the algorithm for the gas selected in the Gas-SelectX ® feature. The screen will show the flow in units and the total flow similar to the example below: 1162.52 SCFM...
  • Page 68 NOTE! The data shown in brackets < > represents one byte of data. Modbus Indicators Green LED indicator LP3 cycles on and off to indicate that the FT1 is operating. Orange LED indicator LP2 blinks when Modbus signals are received and yellow LP1 blinks when Modbus signals are transmitted.
  • Page 69 Model FT1 Communications MAIN MENU EXIT Then press I/O (F1) to set Inputs/Outputs: SET I/O EXIT Then press COM (F1) to select communication parameters. Set Bus protocol for Modbus: Comm=Modbus Press NXT (F1) repeatedly until Modbus is selected as shown and then press OK (F4) to accept the setting.
  • Page 70 40018 16-bit int Control Register (write only), (Reset Total = 2, Perform CAL-V = 173, Abort CAL-V = 174) 40019* 16-bit int Model Status (Read only) FT1 = 0x01 40020 32-bit float LSW Flow User selected 40021 32-bit float MSW...
  • Page 71 Last CAL-V Value *Registers available on FT1 firmware v8.3 or later. **Last CAL-V Data and Time is only valid when using FT1 View Software. NOTES! • In Least Significant Word (LSW) and Most Significant Word (MSW), “word” is one 16-bit Modbus register.
  • Page 72 Model FT1 Communications Read Multiple Registers (command 03) This command reads one or more 16-bit registers from the FT1 and has the following format: Request: <Meter Address> <Command code=03> <Register start address high> <Register start address low> <Register count high> <Register count low> <CRC high> <CRC low>...
  • Page 73 Model FT1 Communications Table 5.2: Status Bits Definitions for Command 04, Modbus Address 40016 Definition Comment Power up indication Cleared when out of the power up sequence Flow rate reached high limit threshold Set limit to zero to disable Flow rate reached low limit threshold...
  • Page 74 Model FT1 Communications Write Single Register (Command 06) This command is used to perform miscellaneous functions such as clearing the totalizer and elapsed time. The register address is Modbus=40018 and the data to write is described in table 5.1. Request: <Meter Address>...
  • Page 75 Model FT1 Communications Lower numbered register S15 S14 S13 S12 S11 S10 S9 Higher numbered register Sign E7 S22 S21 S20 S19 S18 S17 S16 Since the Modbus register data is sent most significant byte first and the registers are sent lowest...
  • Page 76 Model FT1 Communications <0x00> <0x00> <0x42> <0x70> Value = 60.0% <0x00> <0x00> <0x00> <0x00> Value = 0.0% <0x00> <0x00> <0x00> <0x00> Value = 0.0% <0x00> <0x00> <0x00> <0x00> Value = 0.0% <0x00> <0x00> <0x00> <0x00> Value = 0.0% <0x00> <0x00> <0x00> <0x00> Value = 0.0% <0x00>...
  • Page 77 (5) and that all gas percentages entered add up to exactly 100.0%. Do not write a custom gas percentage when the Selection Code is set to a pure gas (see codes 0 through 13 in Table 5.4 above). Table 5.5: FT1 Modbus Holding Registers for Gas-SelectX® 40056 16-bit int Gas type selection See Table 5.4 of gas selection codes...
  • Page 78 Model FT1 Communications 40064 32-bit float LSW Air percentage Percent (31.4 = 31.4%) 40065 32-bit float MSW 40066 32-bit float LSW Argon percentage Percent (31.4 = 31.4%) 40067 32-bit float MSW 40068 32-bit float LSW Propane percentage Percent (31.4 = 31.4%)
  • Page 79 Analog Input 4 = Elapsed Time since reset BACnet Indicators Green LED indicator LP3 cycles on and off to indicate that the FT1 is operating. Orange LED indicator LP2 blinks when BACnet signals are received and yellow LP1 blinks when BACnet signals are transmitted.
  • Page 80 9600, 19200, 38400, 57600, 76800, 115200 FT1 Character sets supported: ANSI X3.4, UTF-8 Fox Thermal BACnet vendor ID: 650 For more information about BACnet visit http://www.bacnet.org/. Communication Protocol and Parameters To program the communication parameters, press I/O (F1) key from the Main Menu.
  • Page 81 Model FT1 Communications Selections are: “9600” “19200” “38400” “57600” “76800” “115200" Next select the MS/TP Mac address. The selection is from 0-127. Please note that only one device can be on a MS/TP Mac address. MAC_ADD=23 Next select the MS/TP Max Master using CHG (F1). The selection is from 0-127. Press OK (F4) to accept the setting.
  • Page 82 Communications Scope - HART Communication The Fox Thermal FT1 transmitter complies with HART Protocol Revision 7.1. This section of the manual specifies all the device-specific features and documents HART Protocol implementation details (e.g., the Engineering Unit Codes supported). The functionality of this Field Device is described sufficiently to allow its proper application in a process and its complete support in HART-capable Host Applications.
  • Page 83 Variable. HART Communication is supported on this loop. The 4-20mA output of the FT1 should be configured for flow rate when using HART. If the 4-20mA output is set to report temperature, HART communication will report the 4-20mA value for temperature rather than flow.
  • Page 84 Model FT1 Communications Set Bus protocol for HART: Comm=HART Press NXT (F1) until HART is selected as shown and then press OK (F4) to accept the setting. NOTE! Power cycle is required for the new settings to take effect. Dynamic Variables Four Dynamic Variables are implemented.
  • Page 85 Model FT1 Communications Additional Device Status (Command 48) Command #48 returns 2 Device-Specific Status bytes of data, with the following status information: These bits are set when an alarm or error condition is present. The bit automatically clears when the condition returns to its normal state.
  • Page 86 Fixed current mode is implemented, using Command 40. This mode is cleared by power loss or reset. Damping Damping is standard, affecting only the PV and the loop current signal. Capability Checklist Manufacturer, model Fox Thermal Instruments, FT1 Device Type Transmitter HART revision Device Description available Number and type of sensors...

  • Page 87: Maintenance

    Refer to "Returning Your Meter" on p. 107. Flow Calibration and Calibration Validation To ensure high accuracy of your FT1 Flow Meter, Fox Thermal provides a full NIST traceable calibration. It is recommended that the meter's accuracy be checked annually by performing the CAL-V™...
  • Page 88 Model FT1 Maintenance Fuse Replacement WARNING! Turn input power OFF before removing or installing a fuse. Use only recommended fuse replacements. Verify the fuse is defective by measuring it with an Ohm Meter (Two replacement fuses are provided with each unit). Replacement fuse is Littelfuse part number 0454.750MR...
  • Page 89 Model FT1 Maintenance Instructions for Removing and Inserting the Meter from a Pressurized Pipe using the Retractor WARNING! Possible injury or damage to equipment may occur if the retractor is not used correctly. Please read the following instructions carefully prior to using the retractor.
  • Page 90 Model FT1 Maintenance Step 2 - Remove the Probe from the Retractor Body 5. After removing the probe from the flow stream (#1-4 on previous page), slowly loosen the compression fitting (see figure 6.2), until the pressure in the retractor is relieved.
  • Page 91 Model FT1 Maintenance How to Insert the Probe into the Flow Stream (Valve closed, System Pressurized) 1. Carefully, slide the probe into the retractor. 2. Install the collar clamp just below the collar spacer, pushing the spacer against the probe fitting, and tighten it in place on the probe.
  • Page 92 Model FT1 Maintenance 3. Slowly open the ball valve to the full open position. Push the meter and probe into the pipe, then hand tighten the compression nut onto the compression fitting. NOTE! At a maximum system pressure of 150 psig, the force required to push the probe in place to tighten the compression Nut will be approximately 66 lbs.

  • Page 93: Troubleshooting

    CAUTION! The electronics and sensor supplied by Fox Thermal are calibrated as a single precision mass flow meter. Interchanging sensors will decrease the accuracy of the flow meter. If you experience a problem with your FT1 flow meter, call Fox Thermal Customer Service Department, Technical Assistance at (831) 384-4300.
  • Page 94 If fuse is OK and unit still won’t power up, call Fox Thermal for additional assistance Troubleshooting CAL-V™ If the FT1 Meter fails a CAL-V™ Calibration Validation test, there are a few reasons. Follow these recommendations: 1. Flow rate in the pipe: •...
  • Page 95 2. Inadequate power source. The FT1 requires 12 to 24VDC at 6 Watts minimum to operate. A 20 Watt power supply is recommended for powering the FT1 to ensure it operates properly under all temperature ventilation, and power on conditions. If the voltage supplied at the input terminals of the FT1 is not within the range of 10VDC to 30VDC, a variety of problems can occur including a dim display, inaccurate flow readings or faulty 4-20mA, pulse and communication interface.
  • Page 96 It does not mean that the zero of the instrument is improperly set. The Fox Thermal sensor is extremely sensitive to gas flow and can even read the small flow caused by convection. If this is an unacceptable condition, please contact Fox Thermal Customer Service for alternatives.
  • Page 97 Check ALM = LoTempAlm Check the CSV voltage in ENG menu of the Engineering Screens, refer to page 15. It should be approximately 0.04 volts when FT1 is measuring no flow and up to 0.25 volts at high flow.
  • Page 98 Gas Selections: ® Methane, Carbon Dioxide (CO2), Nitrogen, Air, Natural Gas, Argon, Propane, Helium, Oxygen, Ethane, Butane, Hydrogen, and a 5-gas mix. See the Fox Thermal website for more information on availability of current gases. Units of Measurement (field selectable):...
  • Page 99 0-30,600 NOTE! To determine if the FT1 will operate accurately in other pipe sizes, divide the maximum flow rate by the pipe area. The application is acceptable if the resulting velocity is within the velocity range above. Check Fox Thermal website for velocity calculator.
  • Page 100 • HART communication option Channel 2: FT1 can be ordered with either the pulse output or serial communication option. • Pulse option: Isolated open collector output rated for 5 to 24VDC, 20mA maximum load, 0 to 100Hz (the pulse output can be configured to either transmit a 0 to 100Hz signal proportional to flow rate or an on/off alarm).

  • Page 101: Agency Approvals

    Model FT1 Appendix Agency Approvals CE: Approved EMC Directive; 2014/30/EU Electrical Equipment for Measurement, Control and Lab Use: EN61326-1:2013 Pressure Equipment Directive: 2014/68/EU Weld Testing: EN ISO 15614-1 and EN ISO 9606-1, ASME B31.3 FM (FM16US0005X) and FMc (FM16CA0005X): Approved Class I, Division 1, Groups B,C,D;...
  • Page 102 Model FT1 Appendix Fig. 7.1: Insertion Meter with Retractor Dimensions Dimensions shown in inches (millimeters). 6.0 [152.4] 4.64 [118.0] (61.0) 2X 3/4" NPT (160.0) (170.0) FEMALE RESTRAINT CABLE RESTRAINT CABLE MOUNT RETRACTOR WITH 1 INCH FULL PORT BALL VALVE 9.0±.3 "LL"...
  • Page 103 Model FT1 Appendix Fig. 7.2: Insertion Meter Dimensions 6.0 [152.4] 4.64 [118.0] 2.60 [66.1] 2X 3/4˝ FNPT PORTS 6.70 [170.3] ELECTRONICS ENCLOSURE SET SCREWS FLOW DIRECTION INDICATOR PROBE ˝LL˝ NOMINAL LENGTH C L SENSING AREA .73 [18.5] ø.75 [19.1] Table 7.2: Insertion Meter with 316 stainless steel probe...
  • Page 104 Model FT1 Appendix Fig. 7.3: Inline Meter with Flow Body NPT End Connections Dimensions Table 7.3: Inline Meter with Flow Body and NPT End Connections Body Size Body Size Dimension “L” ± .10 Dimension “H” ± .25 [model code] [inches]...
  • Page 105 Model FT1 Appendix Fig. 7.4: Inline Meter with Flow Body 150 lb. RF Flange End Connections Dimensions Table 7.4: Inline Meter with Flow Body and 150 lb. RF Flange End Connections Dimensions Body Size Body Size Dimension “L” ± .10 Dimension “H”...
  • Page 106 Warranty Statement and Terms and Conditions Limited Warranty - All Products Fox Thermal warrants that for a period of one year following the date of original shipment of Fox’s products that the product will conform to Fox’s standard written specifications applicable to such product and will be free from defects in workmanship.

  • Page 107: Returning Your Meter

    If you have already shipped your meter to Fox Thermal for servicing and would like to check the status of your meter, please fill out our online Service Order Status form located at www.foxthermal.

  • Page 108: Definitions

    Model FT1 Appendix Glossary of Terms and Definitions American Wire Gauge NIST National Institute of Standards Bara Bar absolute and Technology Contact Normal Liter Calibration NLPH Normal Liter per Hour Change NLPM Normal Liter per Minute Communication Normal cubic Meter...

  • Page 109: Index

    Model FT1 Appendix Index Access to Electronics, p. 32 Preventative Maintenance, p. 88 Alarm Codes, p. 97 Product Description, p. 16 Alarm wiring, p. 37 Programming Analog 4-20mA output, p. 46 Analog 4-20mA Output, p. 46 Breakage or Damage of Probe, p. 87 Alarm Output, p.
  • Page 110 Definition of Terms Wiring NOTE! is used for Notes and Troubleshooting Tips Information WARNING! is used to indicate a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION! is used to indicate a hazardous situation which, if not avoided, could result in minor or moderate injury.