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Fox Thermal View FT2A Instruction Manual

Fox thermal gas mass flow meter
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FT2A
Fox Thermal Gas Mass Flow Meter
Instruction Manual
Document #105397
Rev F
831.384.4300 | 399 Reservation Rd, Marina, CA 93933 |
foxthermal.com

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Summary of Contents for Fox Thermal View FT2A

  • Page 1 FT2A Fox Thermal Gas Mass Flow Meter Instruction Manual Document #105397 Rev F 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 FT2A Table of Contents 1. Introduction p. 4-15 a. Quick Start Guide ............... . p. 4 b.
  • Page 5 Model FT2A Table of Contents 7. Appendices p. 90-107 a. Specifications ................p. 90 b.
  • Page 6 Model FT2A Quick Start Guide Use the table below as a guide while using the worksheet on the next page to record your notes. NOTE! Please read the entire quick-start procedure before beginning installation. Record inside diameter (ID). Ensure the actual pipe ID Outer matches the pipe ID shown on the factory calibration Diameter...
  • Page 7 Model FT2A Quick Start Guide Before powering on your meter, use this worksheet to record your notes. Serial Number: Serial Number: Serial Number: Serial Number: Item to verify What is the Pipe ID? ID = ID = ID = ID = Calculate the Upstream/ UP = UP =...
  • Page 8 Model FT2A Introduction Fig. 1.1: FT2A Menu Tree - Main Menu Enter menu by scrolling to display 4  and entering the password SET PARAMETERS I/O    FLO    DSP    EXIT Display Menu, p. 12 Flow Menu 1, p. 10 SET  I/O COM    I/O    420    EXIT Analog Outputs None Modbus Comm=Modbus SET  I/O SET 4‐20 mA BACnet Select either flow  Ethernet NXT                            OK   INP   OUT                 EXIT CH1     CH2                  EXIT Profibus or temperature for  DeviceNet channel 2 1200...
  • Page 9 Model FT2A Introduction Fig. 1.2: FT2A 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 CHG                            OK Low Flow Alarm...
  • Page 10 Model FT2A Introduction Fig. 1.3: FT2A Menu Tree - Flow Parameter Menu 1 SET PARAMETERS I/O    FLO    DSP    EXIT FLOW PARAMETER 1 Flow Menu 2 Menu, p. 11 DGN   UNT   PRM   EXIT SCFM DIAGNOSTIC FLO UNT=SCFM SCFH SIM                          EXIT NXT                              OK NM3/H NM3/M KG/H KG/M KG/S TMP UNT=° F Deg F LBS/H Simulate Flow? Deg C NXT                             OK LBS/M YES                             NO LBS/S...
  • Page 11 Model FT2A Introduction Fig. 1.4: FT2A Menu Tree - Flow Parameter Menu 2 SET PARAMETERS I/O    FLO    DSP    EXIT FLOW PARAMETER 1 DGN   UNT   PRM   EXIT FLOW PARAMETER 2 CAL    SPC    PRM    EXIT Level 2 Level 1 Calibration Table Parameters Flow cutoff  in selected unit CAL TABLE K fact = 0% Cutoff=12.5 SCFM TB1  (TB2)   (TB3)    EXIT CHG                             OK CHG                            OK A2=0.0233 Pipe Area im M2 or FT2 Level 2 RESTORE DATABASE? CHG                            OK password YES                              NO sensor voltage  for point #1 Flow Exponential Filter Filter=0.8 CHG                            OK RESET CRC?
  • Page 12 Model FT2A Introduction Fig. 1.5: FT2A Menu Tree - Display Menu SET PARAMETERS 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=Temp Total NXT                             OK Elps Display 2  Temp Line 1 Alarm FLo rate DSP2L1=Alarm Total NXT                             OK Elps Display 2 ...
  • Page 13 Model FT2A Introduction Fig. 1.6: FT2A Menu Tree - Engineering Screens Enter: Press F1 & F2 at the same time Press F4 to return to normal mode Flow in selected units 3124.6 SCFM Display 10 Sensor voltage in volts csv=0.3432 Volt Enter Log Menu: Press F1 & F2 at the same time Sensor average volts CsvAv=366809...
  • Page 14 Thank you for purchasing the model FT2A thermal gas mass flow meter and temperature transmitter from Fox Thermal. The model FT2A is one of the most technically advanced flow meters in the world. Extensive engineering effort has been invested to deliver advanced features, accuracy measurement performance and outstanding reliability.
  • Page 15 Model FT2A Introduction temperature. Both 4-20mA outputs can be scaled by the user. The digital output can be used for frequency or alarm, is programmable to represent flow rate and can be scaled for maximum flow/ maximum frequency, units-per-pulse or pulse-per-units. The maximum frequency is 100 Hz. FT2A View™...
  • Page 16 Model FT2A Installation Installation Scope This section describes how to install the Fox Thermal model FT2A Flow Meter: For Insertion Types: 1. Determine lateral position on the pipe. 2. Determine radial position of probe if moisture or condensation present in the gas.
  • Page 17 Model FT2A Installation Instructions for Flow Meter Lateral Placement Install the model FT2A 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. Fig.
  • Page 18 The radial position of the meter may help reduce collection of moisture on the sensor. Condensing liquids contacting the meter's sensing elements will disrupt accurate flow measurement. Fox Thermal recommends the flow meter be used in dry gas conditions whenever possible for highest accuracy.
  • Page 19 Model FT2A Installation Welding Branch Fitting to Pipe The probe of the FT2A must be installed perpendicular in the pipe to measure flow accurately. Use the following steps to ensure that the ¾" branch fitting is correctly welded to the pipe. Directions: 1.
  • Page 20 Model FT2A Installation Installation Depth The installation depth of the sensor in the pipe is dependent on the pipe size. To get the most accurate reading, the sensor window must be properly positioned within the pipe. When installing the latest 45° sensor design, the end of the sensor should be 0.73" (18.5 mm) past the center of the pipe.
  • Page 21 Model FT2A Installation Direction of Flow and Orientation of the Probe Install the meter with the flow direction indicator pointing in the direction of flow and centered on the middle of the pipe. The rotational misalignment of the flow direction indicator must be less than 2 degrees.
  • Page 22 Model FT2A Installation Sensor Orientation - Latest 45° Design The sensor element tubes of the latest sensor design are connected at both ends and offset at 45 degrees in relation to the sensor window opening. Install the flow meter with the window opening facing the flow stream within ±2°.
  • Page 23 Model FT2A Installation Mounting Instructions - Compression Fittings (New Insertion Meters Only) The model FT2A insertion style flow meters are mounted through a 0.531" hole and a ¾" female NPT branch outlet in the customer's pipe. Insertion style flow meters are not designed for use in pipes smaller than 1½".
  • Page 24 Model FT2A 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 2.10).
  • Page 25 Model FT2A Installation Installation of a New Retractor Assembly 1. Remove meter probe from retractor assembly and leave the ball valve open. 2. Install the valve assembly on the pipe, by tightening the Hex Nipple with a 1 1/16" wrench. Fig.
  • Page 26 Model FT2A Installation 3. Carefully slide the probe through the retractor assembly and through the hole to see if there is interference by touching the pipe wall with the end of the probe on the far side or until the probe cannot go deeper.
  • Page 27 Model FT2A Installation When installing the latest 45° sensor design, the end of the sensor should be 0.73" (18.5 mm) past the center of the pipe. When installing an original sensor design, the end of the sensor window should be 0.87" (22.1 mm) past the center of the pipe.
  • Page 28 Model FT2A Installation 6. Insert probe back into the retractor to the depth mark and hand-tighten the compression fitting. 7. Verify that flow direction indicator is in line with pipe and in the direction of flow. Fig. 2.14: Installed Retractor Reset MODEL FT2A FLOW DIRECTION...
  • Page 29 Model FT2A Wiring Wiring Instructions To wire the FT2A connect the power and signal wires to the terminal blocks according to the label and instructions on the following pages. Fig. 3.1: FT2A Wiring Access Inside Display/Cover Main Board Electronics AC POWER DC POWER ETHERNET I/O WIRING...
  • Page 30 Model FT2A Wiring Wiring Precautions WARNING! • DO NOT OPEN THE ENCLOSURE WHEN ENERGIZED OR AN EXPLOSIVE ATMOSPHERE IS PRESENT. • Connect earth ground to a chassis ground screw on the inside of FT2A enclosure. • 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.
  • Page 31 Model FT2A Wiring the cable should be connected to chassis or earth ground at the modem. Belden number 3106A or a similar type of calbe is recommended, depending on the environment or temperature requirements of the application. Profibus, DeviceNet, Ethernet Communication Wiring If you have purchased one of these communications options, please refer to the FT2A Profibus, DeviceNet, Ethernet Manual.
  • Page 32 Model FT2A Wiring remote enclosure end. Power Input Requirements: 24VDC Supply External DC power supply must provide 24VDC ±10%, at 0.7 Amps minimum. The enclosure must be properly grounded with a quality earth ground. Sixteen (16) gauge, stranded wire, is recommended for power and earth ground. Connect the power wiring as shown in the diagram below.
  • Page 33 Model FT2A Wiring Fig. 3.3: Connections for 24VDC Supply Power Input Requirements: 100 to 240VAC Supply Power Input Requirements: 100 to 240VAC Supply If the FT2A has the AC power supply option, the AC power must provide 100 to 240VAC -15% / +10% (85 to 264VAC) at 0.2 Amps minimum.
  • Page 34 Model FT2A Wiring 4-20mA Output Wiring: Customer-Supplied Power Source Bring the 4-20mA wiring in through either conduit hub. Connect the FLOW RATE 4-20mA wiring to TS2 pin 1(+) and 2(-). Connect 4-20mA output #2 wiring to TS2 pin 3(+) and 4 (-). CAUTION! Configure the FT2A with the failsafe setup (see p.
  • Page 35 Model FT2A Wiring 4-20mA Output Wiring: Loop Power Provided by FT2A Bring the 4-20mA wiring in through either conduit hub. Connect the 4-20mA flow rate wiring to terminal blocks TS1 and TS2 as shown in the diagram below. CAUTION! Configure the FT2A with the failsafe setup (see p. 36). Fig.
  • Page 36 Model FT2A Wiring Setting Up the NE-43 Alarms The FT2A flow meter supports the NAMUR specification NE-43 for alarms on the 4-20mA output. See p. 52 for the 4-20mA output NAMUR operation. CAUTION! Configure the FT2A with the following setup when using the 4-20mA output to control equipment in a failsafe application.
  • Page 37 Model FT2A Wiring Frequency/Alarm Output Wiring Bring frequency/alarm wiring in through the right-hand conduit hub. Connect to TS2 pin 5(+) and 6(-). The frequency/alarm output is an open collector circuit capable of sinking a maximum of 20mA of current. Frequency or alarm selection is programmed using the display or FT2A View™. Only one option, frequency or alarm, can be active at a time.
  • Page 38 Model FT2A Wiring Frequency/Alarm Output Wiring: Local +24V Power Option Fig. 3.9: Frequency/Alarm Output Wiring: Local +24V Power Option FT2A Customer PLC or DCS 2.4K to 10K OHM Frequency or Alarm Output NOTE! The FT2A Frequency/Alarm output is typically used to drive digital circuitry or solid-state relays. The output of a solid state relay may, in turn, operate loads such as electromechanical relays or alarm indicators.
  • Page 39 Model FT2A Wiring RS485 Wiring for Modbus Wiring connections are made to terminal block TS2 for Modbus communication. The Tx/Rx+ signal connects to pin 7, Tx/Rx- connects to pin 8 and communication common to pin 9 as shown in Figure 3.10. Termination Resistor Connect a termination resistor across the receive/transmit signals of the last device on the Modbus communication line.
  • Page 40 Model FT2A Wiring RS485 Wiring for BACnet MS/TP Wiring connections are made to terminal block TS2 for BACnet MS/TP communication. The Tx/Rx+ signal connects to pin 7, Tx/Rx- connects to pin 8 and communication common to pin 9 as shown in Figure 3.11. Termination Resistor Connect a termination resistor across the receive/transmit signals of the last device on the BACnet MS/TP communication line.
  • Page 41 Model FT2A Wiring Remote Switch Wiring A remote switch can be used to reset the Totalizer and elapsed time, if enabled in the programming settings. There is no polarity requirement on these connections. Use TS2 pin 10(+) and 11(-). When the 2 gas curve option is ordered, the switch can be used to switch between curves. Fig.
  • Page 42 Model FT2A Wiring Remote Wiring Remote wiring is the same for both insertion and inline type FT2A flow meters. NOTE! Remote wiring is only required when the remote electronics option is provided. Five wire 18 AWG shielded cable required. Run the cable through a separate grounded steel conduit (no other cables or wires in the conduit).
  • Page 43 Model FT2A Wiring Remote Sensor Wiring Remote wiring is only necessary when the remote sensor option has been ordered. Fig. 3.13: Remote Sensor Wiring Shield Cable Shield RED* BLK* BRN* WHT* GRN* Black Dot Denotes Pin #1 Sensor Wires Electronics Enclosure Probe Sensor Wired By Fox SENSOR Remote Enclosure...
  • Page 44 The USB interface is a standard feature which allows communication with a PC to monitor readings and configure settings. FT2A View™, is a free application program from Fox Thermal that connects to the USB interface and allows data monitoring, configuration setting, data logging to Excel, and an option to save and recall FT2A configuration data.
  • Page 45 Model FT2A Operation Measurement Mode Display Screens In the measurement mode, there are four different display screens (display 1, 2, 3 and a prompt screen to enter the programming mode). Two display screens are user programmable (refer to Display Setup p. 54). Scrolling through the display is accomplished by pressing the F1 or F2 key to view the next or previous screen.
  • Page 46 Model FT2A Operation FT2A Engineering Displays Pressing the F1 & F2 keys at the same time in the normal mode, brings up the engineering displays. These displays show internal parameters of the FT2A which are used by Fox service technicians. Use the F1 &...
  • Page 47 Model FT2A 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 Press CHG (F1) key to change the value, OK (F4) to accept the value.
  • Page 48 Model FT2A Operation PASWD:_ Enter the correct password, then follow the instructions for changing a value as specified on page p. 47. The default Level 1 password is “1234”. If the wrong password is entered, the message “Wrong Password” will display and then return to the programming entry screen.
  • Page 49 Model FT2A Operation 20 mA = 3500 SCFM Enter the value for the 20mA and press OK (F4) key to accept the setting. Then the following screen will display: 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 50 Model FT2A Operation Fig. 4.3: Range of 4-20mA Output and NAMUR Alarm NAMUR NAMUR Working Range Alarm Alarm Normal Operation Range Range Press (F4) repeatedly until “Normal Mode” is seen briefly to exit the programming mode. 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 51 Model FT2A Operation Use P/U (F1) to enter pulse per unit, U/P (F2) for unit per pulse or FEQ (F3) to enter the flow and maximum frequency to scale the pulse/alarm output. NOTE! When data is entered with any of the three described methods, the other values will be re-calculated according to the settings.
  • Page 52 Model FT2A Operation The next screen will show: MaxFlo=5000 SCFM NOTE! If the flow rate exceeds the maximum pulse rate (frequency), the output will stay at that maximum frequency but the FT2A will issue an alarm code. CAUTION! Calculate the pulse rate at the maximum flow rate to ensure it does not exceed 100 Hz.
  • Page 53 Model FT2A Operation HiFloAlm=500 SCFM Enter the value for the limit by pressing CHG (F1) and then OK (F4). A value of 0 disables the alarm. NOTE! There is only one output to operate as a pulse output or an alarm output. Both cannot operate at the same time.
  • Page 54 Model FT2A Operation Options for serial communication are: None Modbus BACNET PROFIBUS DEVICENET ETHERNET NOTE! Any selection other than “None” requires the communication option for the selected communication type. If enabling a communication option, see the associated Fox Communications Manual for specific programming information: FT2A Modbus RTU (RS485) & BACnet MS/TP (RS485) manual or FT2A Profibus, DeviceNet, &...
  • Page 55 Model FT2A Operation These are the selections for the Display 1, Line 1. Selections are: Flo rate Flow rate Total Total mass or volume Elps Elapsed time Temp Temperature Alarm Error codes 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).
  • Page 56 Lbs/time or Kg/time. These values will be set at Fox Thermal using information supplied by the customer. These values can be changed to match a new application. Check with Fox Thermal Customer Service before changin the application gas.
  • Page 57 Model FT2A Operation Flow Units Selections for flow units are: SCFM KG/M LBS/D SM3/H MSCFD (MCFD) SCFH KG/S NLPH SM3/D MMSCFD (MMCFD) NM3/H LBS/H NLPM NM3/D MCFD (MSCFD) NM3/M LBS/M NLPS SLPM MMSCFM (MMCFM) KG/H LBS/S SM3/M SCFD MT/H SMPS NMPS SFPM WARNING! The FT2A re-calculates area, 4 and 20mA values, maximum flow for the...
  • Page 58 Model FT2A Operation Pressure Units After pressing OK (F4) to accept the reference temperature, the display will prompt for the reference pressure unit selection: PRES UNT= Psia Press NXT (F1) to select next entry and OK (F4) to accept. Selections are: mmHG = Millimeters of mercury (absolute) Psia = Pounds per square inch absolute bara = Bar absolute...
  • Page 59 Model FT2A Operation Accessing Flow Parameters and Alarm Settings This is the menu used to set various flow parameter values. They are: Flow cutoff, pipe area, 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 60 Model FT2A Operation Pipe Area To set the pipe area, enter the pipe area in inches or millimeters and then press OK (F4). Pipe_id = 3.068 In Use square meters for metric flow unit selections and square feet for English flow unit selections. This selection is dependent on the flow unit selected (English vs metric).
  • Page 61 Model FT2A Operation Enter the filter value and then press OK (F4). FILTER = 0.8 sec Programming High and Low Alarm Settings Settings for the alarms directly follow the flow parameters for flow cutoff, pipe diameter, and filter value. 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™.
  • Page 62 Model FT2A Operation High Temperature Alarm This is the upper temperature limit alarm value that can be associated with the alarm output. An alarm code is generated when the temperature value exceeds this limit. If no alarm is needed, set this value to zero.
  • Page 63 Model FT2A Operation Press CAL (F1) then the display will show: CAL TABLE - - - - - - EXIT Press TB1 (F1) then the display will show: Volt1 = 0.92367 EXIT Press NXT (F3) then the display will show: Flo1 = 0 EXIT Use the CHG (F1) key to change the entry, PRV (F2) to move to the previous entry, NXT (F3) to move...
  • Page 64 Model FT2A Operation Totalizer Rollover The FT2A has an automatic roll-over function. The total flow count of the FT2A will roll over after 99,999,999,999. Except for: MSCFD: 999,999,999 MMSCFM: 9,999,999 MMSCFD: 999,999 Restore Database Restoring the original factory settings is accomplished from the “Flow Parameter 2” menu by entering a Level 2 password “9111”...
  • Page 65 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 66 Model FT2A Operation FloSim = 0 SCFM Enter the value and then press OK (F4). NOTE! Enter zero to disable this feature. Temperature will be displayed according to Temperature Units settings. TmpSim = 0 C Enter the value and then press OK (F4). Enter zero to disable this feature. CsvSim = 0 V Enter the CSV value and then press OK (F4).
  • Page 67 Communications Scope - Modbus Communications This section describes the Modbus implementation using RS485 serial communication physical layer for the Fox Thermal FT2A mass flow meter based on the Modicon Modbus Protocol (PI-MBUS-300 Rev. J). Modbus Protocol MODBUS Protocol is an application layer messaging protocol that provides client/sever communications between devices.
  • Page 68 Model FT2A Communications Read Holding Registers (command 03) This command reads the basic variable from the FT2A 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> Response: <Meter Address>...
  • Page 69 Model FT2A Communications Modbus Data Type Description Units Register 40020 32-bit float LSW Flow User selected 40021 32-bit float LSW 40022 32-bit float LSW Total User selected 40023 32-bit float LSW 40024 32-bit float LSW Total2 (2 gas curves only) User selected 40025 32-bit float LSW...
  • Page 70 Model FT2A Communications Modbus Data Type Description Units Register 40059 16-bit int Reserved 40060 16-bit int Reserved 40061 16-bit int Reserved 40062 16-bit int Reserved 40063 16-bit int Reserved 40064 16-bit int Reserved 40065 16-bit int Reserved 40066 16-bit int Reserved 40067 16-bit int...
  • Page 71 Model FT2A Communications Read Input Register (FT2A Status, Command 04) This command is used to report the FT2A status information. Request: <Meter Address> <Command code=04> <Register address =0> <Register address =0> <Register count =0> <Register count =1> <CRC high> <CRC low> Response: <Meter Address>...
  • Page 72 Model FT2A Communications Preset 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 below. Request: <Meter Address> <Command code=06> <Register address high=0x00> <Register address low=0x11>...
  • Page 73 Model FT2A Communications Switch to Curve #2: Address=40018, data = 171 (0xAB) This command initiates a command to switch to gas curve 2 when configured for 2 gas curves. Make sure that the input contact is not programmed for curve switching Enter the Programming Mode Press the F1 or the F2 key repeatedly, in the normal running mode, until the following screen is shown.
  • Page 74 Model FT2A Communications Communication Protocol and Parameters To program the communication parameters, press I/O (F1) key from the base menu. SET I/O EXIT Then press I/O (F1) again: SET I/O EXIT Then press COM (F1) to select communication parameters. Set Bus protocol for Modbus: Bus=Modbus Press NXT (F1) repeatedly until Modbus is selected as shown and then press OK (F4) to accept the setting.
  • Page 75 Model FT2A Communications Parity=EVEN Press NXT (F1) repeatedly until the correct selection is shown and then press OK (F4) to accept the setting. Selections are: “NONE” “ODD” “EVEN” Address=02 Press CHG (F1) to change the address and then press OK (F4) to accept the setting. Selections are between 01 and 247.
  • Page 76 Communications Scope Thank you for purchasing the model FT2A thermal gas mass flow meter from Fox Thermal. The model FT2A is one of the most technically advanced flow meters in the world. Extensive engineering effort has been invested to deliver advanced features, accuracy measurement performance and outstanding reliability.
  • Page 77 9600, 19200, 38400, 57600, 76800, 115200 FT2A Character sets supported: ANSI X3.4, UTF-8 Fox Thermal BACnet vendor ID: 650 For more information about BACnet visit http://www.bacnet.org/. Enter the Programming Mode Press the F1 or the F2 key repeatedly, in the normal running mode, until the following screen is shown.
  • Page 78 Model FT2A Communications If the wrong password is entered, the message “Wrong Password” will be displayed for a few seconds and then return to the programming entry screen. If the password is accepted, the following screen will be shown: SET PARAMETERS? EXIT This is the base screen for the programming mode.
  • Page 79 Model FT2A Communications Baud=9600 Press NXT (F1) repeatedly until the correct selection is shown and then press OK (F4) to accept the setting. 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.
  • Page 80 Model FT2A Maintenance Precautions WARNING! BEFORE ATTEMPTING ANY MAINTENANCE, TAKE THE NECESSARY SAFETY PRECAUTIONS BEFORE REMOVING THE PROBE FROM THE DUCT ( EXAMPLE: PURGE LINES OF TOXIC AND/OR EXPLOSIVE GAS, DEPRESSURIZE, ETC... ) . WARNING! EXPLOSION HAZARD. DO NOT REMOVE OR REPLACE COMPONENTS OR FUSES UNLESS POWER HAS BEEN DISCONNECTED WHEN A FLAMMABLE OR COMBUSTIBLE ATMOSPHERE IS PRESENT.
  • Page 81 Model FT2A Maintenance Précautions AVERTISSEMENT ! AVANT TOUTE TENTATIVE DE MAINTENANCE, OBSERVER LES CONSIGNES DE SECURITE NECESSAIRES AVANT DE RETIRER LA SONDE DE LA CONDUITE (PAR EXEMPLE, PURGER LES LIGNES DES GAZ EXPLOSIFS/TOXIQUES QU’ELLES POURRAIENT CONTENIR, DEPRESSURISER LE CONTENEUR, ETC.). AVERTISSEMENT ! RISQUE D’EXPLOSION.
  • Page 82 Refer to "Returning Your Meter" on page 107. Flow Calibration To ensure continued high accuracy of your model FT2A Flow Meter, Fox Thermal provides a full NIST traceable calibration. It is recommended that the meter be returned to Fox for a calibration check in our NIST traceable labs after two years of operation.
  • Page 83 Model FT2A 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. CAUTION! Never remove the swage fitting without first closing the ball valve and bleeding off pressure.
  • Page 84 Model FT2A Maintenance How to Insert the Probe into the Flow Stream (Valve closed, System Pressurized) 1. Carefully, slide the probe into the retractor. 2. Tighten the swage fitting into the retractor nipple. 3. Slowly open the ball valve to the full open position. Push the meter and probe into the pipe, then hand tighten the swage nut onto the swage fitting.
  • Page 85 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 any problem with your model FT2A flow meter, call Fox Thermal Customer Service Department, Technical Assistance at (831) 384-4300.
  • Page 86 Model FT2A Troubleshooting Problem Possible Cause(s) Action(s) Meter does not Electromagnetic • Check meter power cycles. initialize Interference (EMI) • Press and release F1 and F2 at the same time; the display will enter Engineering screens. • Press F1 to get to screen #23; record power cycle value.
  • Page 87 Model FT2A Troubleshooting Installation Problems The following is a summary listing of problems that may be encountered with the installation of the FT2A thermal mass flow meter. 1. Improper wiring connections for power and/or 4-20mA output signal. The FT2A requires a separate power source for the main board and the two 4-20mA output signals.
  • Page 88 Model FT2A Troubleshooting Installation Problems (Cont'd) 5. Flow meter is not responding to flow. This problem could be caused by a number of reasons: • Check to ensure adequate power is supplied to the flow meter. If things appear to be correct, perform this functional test before calling Fox.
  • Page 89 Check ALM = LoTempAlm Refer to the ENGINEERING SCREENS MENU on p. 13 of this Manual and the Fox Thermal factory Calibration Certificate to check CSV voltage. Compare Sensor out of range Display 10 value to Calibration Certificate CSV voltage and verify it's within range.
  • Page 90 Model FT2A Appendix Performance Specs Flow Accuracy: ±1% of reading ±0.2% of full scale Insertion meters: 15 diameters upstream; 10 downstream Inline meters (½" size): 6" (152mm) upstream and downstream Inline meters (all other sizes): 8 diameters upstream; 4 downstream Insertion Meters with FC20: 5 diameters upstream of FC20;...
  • Page 91 NOTE! Standard conditions of air at 70°F and one atmosphere. Consult factory for other gases and for flow ranges above — those listed. Inline meters above 5,000 SCFM (7,900 NM3/H) air may require third party calibration. Contact Fox Thermal. – – –...
  • Page 92 Simulation mode used to align 4-20mA output with the input to customer’s PLC/DCS. Physical Specs Sensor material: 316 stainless steel standard; contact Fox Thermal for other material options Enclosure: NEMA 4X (IP67), aluminum, dual ¾” FNPT conduit entries or optional M20 x 1.5mm.
  • Page 93 Model FT2A Appendix Scope - 2 Gas Curves This section describes added features to the standard FT2A flow meter when using the 2 gas curves firmware option. FT2A 2 Gas Curves The 2 Gas Curves firmware allows the use of two different calibration tables when running with different gases.
  • Page 94 Model FT2A Appendix 3) Programming Contact Input for Curve Switching: Enter the menu using steps outlined in "Discrete Input Settings" section (p. 53) and select "Switch CRV". Please note that the flow meter needs to be programmed for 2 gas curves at the Fox factory before you can select this function.
  • Page 95 Model FT2A Appendix 20mA = 500SCFM 20mA is the upper limit associated with curve 1. Change it as needed and press OK. 4mA = 0 4mA is the lower limit associated with curve 1. Change it as needed and press OK. 20 maCv2=450 SCFM 20 maCv2 is the upper limit associated with curve 2.
  • Page 96 Model FT2A Appendix Fig 7.1: Insertion Meter Dimensions (8.1) (10.0) Signal Input Wiring Power 2x 3/4 inch NPT Female 7.12 (18.1) MODEL TFH1000 Gas Mass Flowmeter & Temperature Transmitter “HH” “LL” FLOW Table 7.1: Insertion Meter with 316 stainless steel probe Probe Size Probe Size Dimension “LL”...
  • Page 97 Model FT2A Appendix Fig. 7.2: Insertion Remote Meter Dimensions (8.4) 1.50 (11.2) (3.8) (10.0) (5.1) CONDUIT, 3/4”, METAL Input (3.5) Power (15.0) 7.12 2X 3/4” NPT, (18.1) FEMALE “HH” MODEL FT2 Gas Mass Flowmeter & Temperature Transmitter “LL” REMOTE CABLE, 5 CONDUCTOR, SHIELDED 18 AWG, 100ft (30.48m) MAX FLOW Table 7.2: Insertion Remote Meter with 316 stainless steel probe...
  • Page 98 Model FT2A Appendix Fig. 7.3: Insertion Meter with Retractor Dimensions Dimensions shown in inches (millimeters). (8.4) 1.50 (3.8) (3.5) 7.12 (18.1) Reset FM/FMc 2X 3/4” NPT, MODEL FT2A FEMALE Gas Mass Flowmeter & Temperature Transmitter 10.75±.25 (27.3±.6) 15.0 PROBE LENGTH C L SENSING AREA Table 7.3: Insertion Meter with Retractor Probe Size...
  • Page 99 Model FT2A Appendix Fig. 7.4: Remote Insertion Meter with Retractor Dimensions Dimensions shown in inches (millimeters). (8.4) 1.50 (3.8) 5.35 (13.6) (11.2) (5.1) (3.5) CONDUIT, 3/4”, METAL 7.12 2X 3/4” NPT, (18.1) FEMALE (15.0) MODEL TFH1000 Gas Mass Flowmeter & Temperature Transmitter REMOTE CABLE, 5 CONDUCTOR, SHIELDED 18 AWG, 100ft (30.48m) MAX 10.75±.25...
  • Page 100 Model FT2A Appendix Fig 7.5: Inline Meter with Flow Body and NPT End Connections Dimensions (8.4) 1.50 5.35 (3.8) (13.6) Signal Input (3.5) Wiring Power 7.12 (18.1) 2x 3/4 inch NPT, Female MODEL FT2A Gas Mass Flowmeter & Temperature Transmitter “H”...
  • Page 101 Model FT2A Appendix Fig. 7.6: Inline Remote Meter with Flow Body and NPT End Connections Dimensions (8.4) 1.50 (3.8) 5.35 (13.6) (11.2) Input (3.5) (5.1) Power CONDUIT, 3/4”, METAL 7.12 2X 3/4” NPT, (18.1) FEMALE MODEL FT2A Gas Mass Flowmeter & Temperature Transmitter (15.0) “HH”...
  • Page 102 Model FT2A Appendix Fig 7.7: Inline Meter with Flow Body and 150 lb. RF Flange End Connections Dimensions (8.4) 1.50 (3.8) (10.0) Signal (3.5) Input Wiring Power 7.12 2X 3/4” NPT, (18.1) FEMALE MODEL FT2 Gas Mass Flowmeter & Temperature Transmitter “H”...
  • Page 103 Model FT2A Appendix Fig. 7.8: Inline Remote Meter with Flow Body and 150 lb. RF Flange End Connections Dimensions (8.4) 1.50 (3.8) 5.35 (13.6) (11.2) Input (3.5) (5.1) Power CONDUIT, 3/4”, METAL 7.12 2X 3/4” NPT, (18.1) FEMALE (15.0) MODEL FT2 Gas Mass Flowmeter &...
  • Page 104 Model FT2A Appendix Mounting the FT2A Enclosure When restricted physical installation space exists, the FT2A enclosure can be mounted in a location away from the remote sensor. Use the dimensional diagram below to help mount the enclosure properly. Fig. 7.9: Rear of FT2A Enclosure Showing Mounting Pattern 5.35 (13.6) 4X 0.188 HOLE FOR...
  • Page 105 Model FT2A Appendix Mounting Bracket for the Model FT2A A Fox model FT2A Mounting Kit can be ordered at any time. The kit includes a mounting bracket with mounting screws and U-bolts. The bracket has been designed specifically to allow easy mounting of the FT2A to a surface.
  • 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 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 Model FT2A Appendix Glossary of Terms and Definitions American Wire Gauge Normal Liter Bara Bar absolute NLPH Normal Liter per Hour Contact NLPM Normal Liter per Minute Calibration Normal cubic Meter Change NM3/H Normal cubic Meter per Hour Communication NM3/M Normal cubic Meter per Minute Current Sense Voltage National Pipe Thread...
  • Page 109 Model FT2A Appendix Index Access to Electronics, p. 29 Programming Alarm Codes, p. 89 Analog 4-20mA Output, p. 48 Alarm wiring, p. 38 Alarm Output, p. 52 Analog 4-20mA output, p. 48 Changing values or strings, p. 47 Breakage or Damage of Probe, p. 82 Display Setup, 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.