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Fox Thermal FT2A Instruction Manual

Thermal mass flow meter & temperature transmitter
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Fox Thermal
THERMAL MASS FLOW METER
& TEMPERATURE TRANSMITTER
Model FT2A
www.foxthermal.com | 399 Reservation Road Marina, CA. 93933
105397
Rev. D

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Summary of Contents for Fox Thermal FT2A

  • Page 1 Fox Thermal THERMAL MASS FLOW METER & TEMPERATURE TRANSMITTER Model FT2A www.foxthermal.com | 399 Reservation Road Marina, CA. 93933 105397 Rev. D...
  • Page 2 EMAIL: SERVICE@FOXTHERMAL.COM Download Technical Data Sheets from our website: www.foxthermal.com Fox Thermal believes that the information provided herein is accurate; however, be advised that the information contained herein is NOT a guarantee for satisfactory results. Specifically, this information is neither a warranty nor guarantee, expressed or implied, regarding performance, merchantability, fitness, or any other matter with respect to the products;...

  • Page 3: Table Of Contents

    6. Troubleshooting Page 68 7. Appendices Page 74 a. Specifications Page 74 b. Agency Approvals Page 77 c. FT2A with 2 Gas Curves Page 78 d. Dimensions Page 82 e. Mounting the FT2A Enclosure Page 90 f. Warranty Page 92 g.
  • Page 4 Check the remaining flow meter settings by accessing the meter settings either through the front panel of the display or by using the FT2A View™ software tool. Record the settings in the spaces given for items A - E on the following page.
  • Page 5 After powering on 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 FT2A View™ software tool. Which flow units have been set in meter? (SCFM, KG/H, etc..)

  • Page 6: Introduction

    Therefore a device measuring mass flow is independent of temperature and pressure. The Model FT2A provides a direct measurement of gas flow in Mass units (kg/ hr, lb/hr), standard units (SCFM, SLPM) or normal units (NM3/hr, NLPM) with no additional...
  • Page 7 The maximum frequency is 100 Hz. FT2A View™ interfaces to the USB port and is a free Fox PC-based software program that displays flow meter readings and permits flow meter configuration. The software is available for download on the Fox website.
  • Page 8 Configuration Panel for field configuration of flow meter settings such as 4-20mA scaling, frequency output scaling, pipe area, zero flow cutoff, flow filtering or damping, display configurations, diagnostics and alarm limits. Fig. 1.1: FT2A Function Diagram Standard I/O 24VDC Input Power...

  • Page 9: Installation (Mechanical)

    Model FT2A Installation Scope This section describes how to install the Fox Model FT2A 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 2.
  • Page 10 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.
  • Page 11 2. Assemble the compression fitting and NPT fitting hand tight onto the probe of the FT2A. 3. Insert the probe into the hole in the pipe and use the FT2A probe and compression fitting to align the NPT fitting with the hole and the probe perpendicular to the pipe.
  • Page 12 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, proper placement of the sensor window within the pipe is necessary. As shown in Fig 2.2, the end of the sensor window should be 0.87" past the center line of the pipe.
  • Page 13 Model FT2A Installation Fig. 2.4: Orientation of Type Flow Meter FRONT VIEW MODEL FT2A Gas Mass Flowmeter & Temperature Transmitter Flow Direction Arrow CUSTOMER PIPE FLOW CUSTOMER TOP VIEW PIPE +2° Note: Rotational misalignment FLOW should not exceed ±2° -2°...
  • Page 14 Model FT2A Model FT2A Installation Unequal Length Sensor Elements Install the shorter sensor element upstream from the longer one. Fig. 2.5: Unequal Length Sensor Elements +2° FLOW -2° FLOW Equal Length Sensor Elements Install flow meter with both sensor elements facing the flow stream within ±2˚.
  • Page 15 Installation Mounting Instructions - Compression Fittings The Model FT2A is mounted through a 7/8" hole and a ¾" female NPT half coupling provided in the customer's pipe. Insertion style flow meters are not designed for use in pipes smaller than 1½".
  • Page 16 Model FT2A 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.
  • Page 17 Model FT2A Installation 4. 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 18 Model FT2A Installation 5. Using the equation (L + D/2 + 0.73") from Figure 2.9, calculate the insertion depth and mark on the probe while measuring from the end of the probe. 6. The Retractor Clearance table of Figure 2.9 lists the space required to remove the meter from the retractor.
  • Page 19 Model FT2A Installation 7. Insert probe back into the retractor to the depth mark and hand-tighten the compression fitting. 8. Verify that flow direction indicator is in line with pipe and in the direction of flow. Fig. 2.11: Installed Retractor...

  • Page 20: Wiring (Electrical)

    Wiring Wiring Instructions Wire the FT2A by opening the enclosure cover, bringing customer supplied wires in through the conduit openings and connecting to the terminal blocks. The FT2A has two conduit openings to maintain separation between AC input power and output signal wiring. To eliminate the possibility of noise interference;...

  • Page 21: Input Power

    Serial Communication Wiring If you have purchased communications options, please refer to one of the following appropriate Fox Instructions Manuals: • Fox FT2A Modbus / BACnet MS/TP Manual • Fox FT2A Profibus, DeviceNet, Ethernet Manual Remote Sensor Wiring NOTE! Remote wiring is only required when the Remote Electronics option is provided.
  • Page 22 Model FT2A Wiring FT2A Internal Components Fig. 3.2: Internal Components for Wiring the FT2A Main Board Electronics Inside Display/Cover AC POWER DC POWER ETHERNET I/O WIRING OPTIONAL MODBUS COMMUNICATION OPTIONAL COMMUNICATION (DEVICENET PROFIBUS) REMOTE SENSOR COMMUNICATION WIRING Keep power and signal wires within the...
  • Page 23 Model FT2A Wiring 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.
  • Page 24 Wiring 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. The enclosure must be properly grounded with a quality earth ground. Sixteen (16) gauge, stranded wire, is recommended for power and earth ground.
  • Page 25 Model FT2A Wiring 4-20mA Output Wiring: Customer-Supplied Power Source Bring the 4-20mA wiring in through the right-hand conduit hub. Connect FLOW RATE 4-20mA wiring to TS2 pin 1(+) and 2(-). Connect 4-20mA output #2 wiring to TS2 pin 3(+) and 4(-).
  • Page 26 Bring the 4-20mA wiring in through the right-hand conduit hub. Connect the 4-20mA wiring to terminal blocks TS1 and TS2 as shown in the diagram below. Fig. 3.6: 4-20mA Output Wiring for Loop Power Provided by FT2A Customer PLC or DCS...
  • Page 27 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. 40 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 28 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 29: Remote Switch

    Wiring NOTE! NOTE! The FT2A Frequency/Alarm output is typically used to drive digital 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 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 30: Remote Wiring

    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 31 Model FT2A Wiring Fig. 3.11: 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 *Wire colors listed here represent the wire colors of cables supplied by Fox. Colors may vary if customer is supplying their own cable.

  • Page 32: Operation (Standard Operation)

    PC application. FT2A Display Panel & Configuration Panel The FT2A display is a 2 line x 16 character display with 4 mechanical buttons. The meter can be programmed by using the display and configuration panel.
  • Page 33 F4 is used to exit to Display #1. Pressing the F3 and F4 keys at the same time enters the Reset Total screen (see p. 50). Fig. 4.2: FT2A Display Screen Navigation F1 key: Moves up one screen F2 key: Moves down one screen 1456.5 SCFM...
  • Page 34 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 & F2 keys to navigate. Press F4 to exit.
  • Page 35 Model FT2A Operation Data Entry using the local display module 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 36 Model FT2A Operation Enter the correct password, then follow the instructions for changing a value as specified on page p. 35. 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 37 Model FT2A Operation 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. 4 mA = 0 SCFM Enter the value for the 4mA and press OK (F4).
  • Page 38 Model FT2A Operation 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 39 MaxFlo=4999.8 SCFM NOTE! When the flow rate exceeds the maximum frequency set point, the output will stay at that maximum frequency but the FT2A will issue an alarm code. CAUTION! Equation to ensure pulse rate must not exceed 100 Hz.
  • Page 40 Model FT2A Operation Alarm Output To program the Alarm output, press I/O (F1) key from the "SET PARAMETERS" menu screen, then select I/O (F2) and the screen will show:. EXIT Then press OUT (F2) and the screen may show: OUT = HiFloAlm Then press NXT (F1) to select the correct alarm and press OK (F4).
  • Page 41 NOTE! Any selection other than “None” requires the communication option for the selected communication type. If enabling a communication option, see the associated Fox Communication Manual for specific programming information: FT2A Modbus & BACnet MS/TP manual or FT2A Profibus, DeviceNet & Ethernet Manual.
  • Page 42 Model FT2A Operation Selections are: DSP1L1 Display 1, Line 1 DSP1L2 Display 1, Line 2 DSP2L1 Display 2, Line 1 DSP2L2 Display 2, Line 2 To Program Display Screens #1 & 2: From the base programming menu press DSP (F3) to select the display menu:...
  • Page 43 Model FT2A Operation Password There are two user level passwords, only Level 1 is programmable and gives access to all the normal settings. The second password is used to allow access to calibration factors and should normally never be changed unless advised by the Fox service department, or to set a new password in the event that the user forgets the Level 1 password.
  • Page 44 Model FT2A Operation Units Settings This menu is used to set the units for mass flow, temperature, pressure reference and the settings of reference temperature, reference pressure and density of gas when using Lbs/time or Kg/time. These values will be set at Fox, using the Application Data Sheet values. If the customer changes the application, these values can be changed to match the new application.
  • Page 45 WARNING! The FT2A re-calculates area, 4 and 20mA values, maximum flow for the frequency output and zero flow cutoff when changing flow units except for velocity units. When going to or from velocity units, the FT2A will not recalculate these values and these values must be re-entered manually.
  • Page 46 Model FT2A Operation Press NXT (F1) to select next entry and OK (F4) to accept. Selections are: mmHG Millimeters of mercury Psia Pounds per square inch atmosphere bara Bar atmosphere After the pressure unit selection is made, the display will show a menu to enter the pressure reference: PresRef= 14.7...
  • Page 47 Model FT2A Operation The menu is accessed from the base programming menu by pressing FLO (F2): FLOW PARAMETER 1 EXIT Then press PRM (F3): FLOW PARAMETER 2 EXIT NOTE! The CAL and SPC function keys will only appear and be accessible from a Level 2 password.
  • Page 48 Model FT2A Operation Filter Value The Filter Value is also referred to as a dampening factor and is used to quiet the readings. The filter value is an exponential filter that dampens the noise and is used as follows: Flow Value = (FA * new value) + (FB * average) Where FA = filter value, FA + FB is equal to 1.0.
  • Page 49 Model FT2A Operation Low Flow Rate Alarm To set the parameters for a Low Flow Rate Alarm: LoFloAlm = 100 SCFM This is the lower flow limit alarm value that can be associated with a discrete output. An alarm code is generated when the flow value is below this limit. If no checking is needed, this value should be set to zero.
  • Page 50 Level 2 password. Calibration parameter values are set for temperature and pressure at 0 degree C and 760 mmHg. These settings should normally never be changed except by Fox Thermal Instrument personnel at the factory. This menu is entered from the base menu and pressing FLO, PRM and CAL.
  • Page 51 Press YES (F4) to reset total and NO (F1) to cancel. NOTE! This feature is not available on non-resettable units. Totalizer Rollover The FT2A has an automatic roll-over function. The total flow count of the FT2A will roll over after the following values: Most flow units:...
  • Page 52 Model FT2A Operation The green LP1 LED will flash at a faster pace until the recall is performed. The "RESET CRC" screen will follow "RESTORE DATABASE". 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.
  • Page 53 Model FT2A Operation FloSim = 0 SCFM Enter the value and then press OK (F4). NOTE! Enter zero to disable this feature. TmpSim = 0 C Enter the value and then press OK (F4). NOTE! Enter zero to disable this feature.
  • Page 54 Model FT2A Operation Fig. 4.4: FT2A Menu Tree - Main Menu Enter menu by scolling to display 4 and entering the password SET PARAMETERS I/O FLO DSP EXIT Display Menu, p. 58 Flow Parameters 1 Menu, p. 56 SET I/O...
  • Page 55 Model FT2A Operation Fig. 4.5: FT2A Menu Tree - Digital Output Not used OUT= Not used Frequency NXT                            OK HiFloAlm LoFloAlm HiTempAlm Frequency LoTempAlm System Alm Select 1 of  3  methods to scale  High Limit Alarm OUT= FREQUENCY the frequency  NXT                            OK output OUT= HiFloAlm NXT                            OK FREQUENCY OUTPUT P/U     U/P     FEQ    EXIT HiFloAlm=500 SCFM CHG                          OK PLS/UNT=2 UNT/PLS=0.5 MaxFreq=100Hz CHG                            OK CHG                            OK CHG                            OK Low Limit Alarm...
  • Page 56 Model FT2A Operation Fig. 4.6: FT2A Menu Tree - Parameter Menu 1 FLOW PARAMETER 1 Flow Parameter 2 Menu, p. 57 DGN UNT PRM EXIT DIAGNOSTIC FLO UNT=SCFM EXIT M /M TMP UNT=° F Simulate Flow? eg C L /M TmpRef= 0 °F...
  • Page 57 Model FT2A Operation Fig. 4.7: FT2A Menu Tree - Parameter Menu 2 FLOW PARAMETER 2 CAL SPC PRM EXIT Level 2 Level 1 Calibration Table Parameters Flow cutoff in selected units CAL TABLE K fact = 0% Cutoff=12.5 SCFM TB1 (TB2) (TB3) EXIT A2=0.0233...
  • Page 58 Model FT2A Operation Fig. 4.8: FT2A Menu Tree - Display Menu DISPLAY/PASSWORD PSW EXIT Display 1 Line 1 FLo rate DSP1L1=FLo rate PASSWD=1234 Total Elps Display 1 Temp Line 2 Alarm FLo rate DSP1L2=Temp Total Elps Display 2 Temp Line 1...
  • Page 59 Model FT2A Operation Fig. 4.10: FT2A Menu Tree - Engineering Display nter ress 1 2 at the sa e ti e ress to return to nor al o e 3124.6 SCFM Flow in selected units isplay 10 csv=0.3432 Volt Sensor voltage in volts...
  • Page 60 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 61 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.).
  • Page 62 A new sensor will be installed and calibrated. Refer to "Returning Your Meter" on page 93. Flow Calibration and Calibration Validation 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 63 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.
  • Page 64 Model FT2A Maintenance Step 2 - Remove the Probe from the Retractor Body 4. After removing the probe from the flow stream (#1-4 on previous page), slowly loosen the Swage Fitting (see figure 8.2), until the pressure in the retractor is relieved.
  • Page 65 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. Install the collar clamp just below the collar spacer, and tighten it in place on the probe.
  • Page 66 Model FT2A Maintenance 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. 4. Verify that the probe is aligned with the centerline of the pipe, and pointed in the direction of flow.
  • Page 67 Interchanging sensors or sensor wiring will affect the accuracy of the flow meter. If you experience any problem with your Model FT2A Flow meter, call Fox Customer Service Department, Technical Assistance at (831) 384-4300.

  • Page 68: Engineering Screens

    Model FT2A Troubleshooting Troubleshooting (cont'd) Problem Possible Cause Action Unit will not power-up a)No power input •Check fuse (F1) located next to b)Bad fuse TS1 on main board. c)Bad Power supply •Check for correct power supply voltage at TS1 on main board.

  • Page 69: Troubleshooting

    Model FT2A Troubleshooting Troubleshooting (cont'd) Problem Possible Cause Action Velocity measurement is 1.Very turbulent flow 1.Increase dampening (see filter erratic or fluctuating settings in "Flow Parameters" on p. 2.Sensor dirty 2.Clean sensor (Refer to Maintenance section, p. 62) 3.Sensor broken 3.Return flow meter to Fox for...
  • Page 70 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. Two wires supply 24VDC power to the main board. Two wires are used for each of the 4-20mA output signals.
  • Page 71 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 72 Model FT2A Troubleshooting Alarm Codes Information to diagnose and clear alarm codes is on p. 57 under the Menu Tree section. Enter password (9111) and follow the block diagram to get to the section affected by the error code. Alarm...
  • Page 73 Reason Action Code Sensor Bridge Shutdown The FT2A probe is getting too hot. Open wiring compartment and check sensor wiring. Database CRC Error Refer to the Reset CRC section on pages 50 and 51 of this manual. Verify the programmed values are verified and corrected before clearing the error.

  • Page 74: Appendices

    Model FT2A Appendices Performance Specs Flow Accuracy: Inline meter: ± 1% of reading ± 0.2% of full scale. ¼" size: 6” (152 mm) of straight, unobstructed pipe upstream and downstream required. All other sizes: 8 diameters of straight, unobstructed pipe upstream and 4 downstream required.
  • Page 75 Model FT2A Appendices Operating Specs (cont'd) Full Scale Flow Ranges for In-Line Flow meters: NM 3 /hr Size SCFM MSCFD 0.25" 0-7.5 0-10.8 0-11.8 0.5" 0-125 0-180 0-200 0.75" 0-220 0-320 0-350 1" 0-360 0-520 0-570 1.25" 0-625 0-900 0-990 1.5"...
  • Page 76 Serial Communication: USB connector for connecting to a laptop or computer is standard; free PC-based software tool - FT2A View™ - provides complete configuration, remote process monitoring, and data logging functions. Optional isolated communication outputs: RS485 Modbus, BACnet MS/TP, Profibus-DP, DeviceNet, or Ethernet Modbus TCP.

  • Page 77: Agency Approvals

    Model FT2A Appendices Agency Approvals CE: Approved EMC Directive; 2004/108/EC Emissions and Immunity Testing: EN61326-1:2008 Low Voltage Directive (LVD): 2006/95/EC Product Safety Testing: EN 61010-1: 2010 Pressure Equipment Directive: 97/23/EC Weld Testing: EN ISO 15614-1 and EN ISO 9606-1, ASME B31.3 FM and FMc: Approved Class I, II, III, Division 2, Groups A, B, C, D, E, F, G, T4A hazardous locations.

  • Page 78: Ft2A With 2 Gas Curves

    Model FT2A Appendices Scope 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 79 Model FT2A Appendices 3) Programming Contact Input for Curve Switching: Enter the menu using steps outlined in "Discrete Input Settings" section (p. 40) 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 80 Model FT2A Appendices 5) Programming 4-20mA settings for Curve 1 and Curve 2: When the meter has been programmed for 2 gas curves, 2 sets of 4-20mA settings for flow rate are used. To program these settings: Go to the 4-20mA setting following the "Analog 4-20mA Settings" section.
  • Page 81 • In the event of a power failure, the software will remember the last curve in use. Upon powering up again, the FT2A unit will continue to use that curve. • Switching between gas curves will require a password unless the password is set to "0", which disables it.
  • Page 82 Model FT2A Appendices Fig. 7.1 Local Insertion Meter with Retractor Dimensions (8.4) 1.50 (3.8) (10.0) (3.5) 7.12 8.44 (18.1) (21.4) 2X 3/4” NPT, MODEL TFH1000 Gas Mass Flowmeter & Temperature Transmitter FEMALE 10.75±.25 (27.3±.6) “LL” 0.87 (2.2) Table 7.1 Local Insertion Meter with Retractor Dimension “LL”...
  • Page 83 Model FT2A Appendices Fig. 7.2 Remote Insertion Meter with Retractor Dimensions (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, 100ft (30.48m) MAX...
  • Page 84 Model FT2A Appendices Fig. 7.3 Insertion Meter Dimensions (10.0) (8.1) 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 7.3 Insertion Meter with 316 stainless steel probe Dimension “LL”...
  • Page 85 Model FT Model FT2A Appendices Fig 7.4: 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 MODEL FT2 “HH” Gas Mass Flowmeter & Temperature Transmitter “LL”...
  • Page 86 Model FT2A Appendices Fig. 7.5: Inline Meter with 316 Stainless Steel 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 87: Dimensions

    Model FT2A Appendices Fig. 7.6: Inline Remote Meter with 316 Stainless Steel 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 &...
  • Page 88 Model FT2A Appendices Fig. 7.7: Inline Meter with 316 Stainless Steel Flow Body and 150lb. 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 89 Model FT2A Appendices Fig. 7.8: Inline Remote Meter with Stainless Steel Flow Body and 150lb. RF Flange End Connections Dimensions (8.4) 1.50 (3.8) 5.35 (13.6) (11.2) (3.5) Input (5.1) Power CONDUIT, 3/4”, METAL 7.12 2X 3/4” NPT, (18.1) FEMALE (15.0) MODEL FT2 Gas Mass Flowmeter &...

  • Page 90: Mounting The Ft2A Enclosure

    #8 MOUNTING SCREW 2X 1.38 (7.4) 6.06 7.12 (15.4) (18.1) 3X 3/4” FEMALE NPT Figure 7.9 shows the rear view of the FT2A enclosure without sensor or conduit. AC power enters on one side, DC power and signals enter on either side.
  • Page 91 Appendices 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. See Fig. 7.10 for dimensions.

  • Page 92: Warranty

    Model FT2A Appendices Warranty (a) FOX warrants that the products furnished under this Agreement will be free from defects in material and workmanship for a period of one year from the date of shipment. The customer shall provide notice of any defect to FOX, within one week after the Customer’s discovery of such defect.

  • Page 93: Returning Your Meter

    Model FT2A Appendices Returning Your Meter The Fox Thermal Customer Service Department (PH: 831-384-4300 or FAX: 831-337-5787) can help you through the process of returning a meter for service. If it becomes necessary to return a Fox flow meter for service or recalibration, please follow these steps: 1.
  • Page 94 Model FT2A Definitions Glossary of Terms and Definitions Alternating Current American Wire Gauge Bara Bar absolute Contact Calibration Change Communication Current Sense Voltage Direct Current Down Display Elapsed time Frequency Ft^2 Square Feet Input/Output Input Infrared (IR Buttons = optical switches)
  • Page 95 Model FT2A Definitions National Pipe Thread Personal hand held computer Unit Unit per Pulse Personal Computer Pulse per Unit PIP A^2 Pipe Area Programmable Logic Controller Parameters Pressure PSIA Pounds per Square Inch Absolute Point Password Simulation Standard Cubic Feet...

  • Page 96: Index

    Model FT2A Index Index Password Level 1, p. 43 Level 2, p. 43 Access to Electronics, p. 20 Programming, p. 43 Alarm Codes, p. 72 Power Input Wiring, p. 23 Analog 4-20mA outputs, p. 36 Preventative Maintenance, p. 62 Breakage or Damage of Probe, p. 62 Product Description, p.
  • Page 97 Model FT2A Index Troubleshooting, p. 71 Alarm Codes, p. 72 General, p. 68 Installation Problems, p. 71 Unequal length sensors, p. 14 USB Interface, p. 32 Warranty, p. 92 Wiring Alarms, p. 28 Frequency/Alarm Outputs, p. 28 Grounding, p. 20 Input - Local, p.
  • Page 98 Wiring Definition of Terms Troubleshooting Tips Information Caution - (refer to accompanying documents): Please follow the specified instructions and general safety practices. Indicates compliance with the WEEE Directive. Please dispose of the product in accordance with local regulations and conventions. Indicates compliance with the applicable European Union Directives for Safety LVD (Low Voltage Directive 2006/95/EC), EMC (Electromagnetic...

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