Sierra TM500 Instruction Manual
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Sierra TM500 Instruction Manual

Thermal mass flow meter
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TM500
Thermal Mass Flow Meter
Instruction Manual
Document: S-IM-TM500 | Rev B_PN 110069
www.sierrainstruments.com

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  • Page 1 TM500 Thermal Mass Flow Meter Instruction Manual Document: S-IM-TM500 | Rev B_PN 110069 www.sierrainstruments.com...
  • Page 3 TRADEMARKS TM500™, TM-Cal™, Gas-Mix ™, FlowTrak™, TM500-View Software™ and DigiSense™ are trademarks of Sierra Instruments, Inc. Other product and company names listed in this manual are trademarks or trade names of their respective manufacturers.
  • Page 4 TM500 Disclaimer Warning and Cautions General Safety Information We use caution and warning statements throughout this book to draw your attention to important information. Symbol Key Symbol Symbol Meaning Description This statement appears with information that is important to protect people and Warning equipment from damage.
  • Page 5 TM500 Disclaimer CAUTION • Caution! Before making adjustments to the TM500, verify the flow meter is not actively monitoring or reporting to any master control system. Adjustments to the electronics will cause direct changes to flow control settings. • Caution! All flow meter connections, isolation valves and fittings for hot tapping must have the same or higher pressure rating as the main pipeline.
  • Page 6 If the problem persists, contact Sierra Instruments by e-mail (see inside front cover). For urgent phone support you may call (831) 373-0200 between 8:00 a.m. and 5:00 p.m. PST. In Europe, contact Sierra Instruments Europe at +31 72 5071400. In the Asia-Pacific region, contact Sierra Instruments Asia at +8621 5879 8521.

  • Page 7: Table Of Contents

    TM500 Table of Contents Table of Contents 1. Introduction p. 11-21 a. Quick Start Guide ............... . . p. 9 b.
  • Page 8 TM500 Table of Contents 6. Maintenance p. 88-96 a. Safe Removal of Meter from Retractor ............p. 90 b.

  • Page 9: Introduction

    Initializing... Check the remaining flow meter settings by accessing the meter settings either through the front panel of the display or by using the TM500-View software. Record the settings in the spaces given for items A - F on the following page.
  • Page 10 20mA = Confirm the correct gas is selected for your application in theGas-Mix ™ menu Your Notes: If you are experiencing any problems after completing this procedure, please call the Sierra Instruments Service Department at 831-373-0200 to review this information.
  • Page 11 TM500 TM500 Introduction Fig. 1.1: TM500 Menu Tree - Main Menu Enter menu by scolling to display 4  and entering the password MAIN MENU I/O    FLO    DSP    EXIT Display Menu, p. 15 Flow Menu 1, p. 13 I/O MENU I/O   COM  420    EXIT Digital Output Menu, p. 12 SET 4‐20 mA Analog Outputs CH1   CH2              EXIT Communication mA=Temp Comm=Modbus None Temp Modbus Flow NXT                            OK...
  • Page 12 TM500 TM500 Introduction Fig. 1.2: TM500 Menu Tree - Digital Outputs and Input MAIN MENU I/O FLO DSP EXIT I/O MENU I/O COM 420 EXIT Set I/O OUT INP EXIT OUT= Pulse Inp= Not Used Not used Not used Pulse...
  • Page 13 TM500 TM500 Introduction Fig. 1.3: TM500 Menu Tree - Flow Menu 1 MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT Flow Menu 2 Menu, p. 14 DIAGNOSTIC FLO UNT=SCFM SCFM SCFH SIM TM-Cal EXIT NM3/H...
  • Page 14 TM500 TM500 Introduction Fig. 1.4: TM500 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 Flow cutoff  in selected units K fact = 0% Cutoff=12.5 SCFM CHG         OK CHG        OK ® Gas-Mix Menu, p. 17 Pipe_id=4.026 In RESTORE DATABASE? Pipe id in inches or mm CHG        OK YES                  NO Filter=0.8 Sec RESET CRC?
  • Page 15 TM500 TM500 Introduction Fig. 1.5: TM500 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...
  • Page 16 TM500 TM500 Introduction Fig. 1.6: TM500 Menu Tree - TM-Cal™ Menu MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT DIAGNOSTIC MENU SIM TM-Cal EXIT TM-Cal MENU EXIT VERIFY TM-Cal? Choosing “Hold Value” will retain the last flow value while test is being performed.
  • Page 17 TM500 TM500 Introduction Fig. 1.7: TM500 Menu Tree - Gas-Mix ™ Menu MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT FLOW MENU 2 PRM EXIT GAS= Mix Pure Gas Pure Gas Be sure mixture equals 100%.
  • Page 18 Display 19 TmpLo=0.0 °F NXT PRV EXIT RefP=14.73 psia NXT PRV EXIT RefT=60.00 °F Fig. 1.9: TM500 Menu Tree - Reset Flow Total NXT PRV EXIT Kfact=0.0% NXT PRV EXIT Cutoff=12.5 SCFM F3 & F4 pressed at the same time will...
  • Page 19 Calibration Validation Validate the calibration of the TM500 in the field using the TM-Cal™ test. The goal of Calibration Validation is to provide operators with the ability to verify that the meter is capturing accurate data at scheduled recalibration times - or at any time - instead of sending the meter back to the factory for recalibration.
  • Page 20 Introduction Flow Calibration Every Sierra Instruments flow meter is set to the customer's configuration at the factory using an App ID which is generated by the on-line configurator. The App ID specifies the gas type, flow range, serial communication and other settings in the meter. If these settings match the final customer application, the meter is ready to use.
  • Page 21 4-20mA scaling, pulse output scaling, pipe area, flow cutoff, flow filtering, display configurations, diagnostics, communication parameters, and alarm limits. Fig. 1.11: TM500 Function Diagram Standard I/O 12-24VDC Input Power 4-20mA Flow...

  • Page 22: General

    3. The enclosure cover must be closed except during configuration or during installation. 4. Mounting TM500 in direct sunlight can cause the temperature inside the enclosure to increase beyond design limits, resulting in failure of LCD display and reduced component life.

  • Page 23: Installation (Mechanical)

    Instructions for Flow Meter Lateral Placement Install the TM500 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 24 Fig. 2.2: Installation at 180° Alternate Installations - Vertical Pipes or Restricted Installation Spaces When restricted physical installation space exists, the TM500 can also be installed at other angles. Please note that the display and the enclosure orientation can be rotated in 90° increments.
  • Page 25 2. Assemble the hex nipple and branch fitting hand tight onto the probe of the TM500. 3. Insert the probe into the hole in the pipe and use the TM500 probe and compression fitting to align the branch fitting with the hole and the probe perpendicular to the pipe.

  • Page 26: Installation Depth

    TM500 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 27: Mounting Instructions

    Installation Mounting Instructions - Compression Fittings (TM500 Only) The TM500 is mounted through a 0.781" hole and a female NPT branch outlet in the customer's pipe. Insertion style flow meters are not designed for use in pipes smaller than 1½".
  • Page 28 TM500 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 2.7).
  • Page 29 Installation Rotating the Enclosure The TM500 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 rotate the enclosure into the desired position and tighten the set screws. Do not rotate the enclosure more than 360 degrees.
  • Page 30 TM500 Installation Changing the Orientation of the TM500 Display The 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 31 TM500 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 32 TM500 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 33 TM500 Installation 5. Using the equation (L + D/2 + 0.73") from Figure 2.12, calculate the insertion depth and mark on the probe while measuring from the end of the probe. 6. The Retractor Clearance table of Figure 2.12 lists the space required to remove the meter from the retractor.
  • Page 34 TM500 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 35: Wiring (Electrical)

    TM500 Wiring Wiring Wiring Instructions To wire the TM500 connect the power and signal wires to the terminal blocks according to the labeling and instructions on the following pages. Fig. 3.1: TM500 Wiring Access Front Enclosure Cap Rear Enclosure Cap Unscrew front enclosure cap to access the...
  • Page 36 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 TM500 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 37 External DC power supply must provide 12 to 24VDC (10 to 30VDC full input power range) at 6 Watts minimum. With 12VDC power, the TM500 can use up to 500mA. With 24VDC power, the TM500 can use up to 250mA.
  • Page 38 Wiring Power Input Requirements: 100 to 240VAC If the TM500 has the AC power supply option, the AC power must provide 100 to 240VAC at 7 Watts minimum. Connect the power wiring to terminals TS1 pins 1 and 2 as shown in the diagram below.
  • Page 39 TM500 Wiring 4-20mA Output and HART Communication 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. 3.4: 4-20mA Output Wiring for Isolated Customer-Supplied Power Source...
  • Page 40 TM500 Wiring 4-20mA Output and HART Communication Wiring: Loop Power Provided by TM500 (12 to 24VDC power option only) 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.
  • Page 41 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 TM500-View Software™. Only one option, pulse or alarm, can be active at a time.
  • Page 42 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 TM500-View Software™. Only one option, pulse or alarm, can be active at a time.
  • Page 43 TM500 Wiring Switch Input Wiring A remote switch can be used to reset the Totalizer and elapsed time, if enabled in the programming settings. Connect the switch input wiring as shown in the diagram below. Fig. 3.8: Switch Input Wiring Customer PLC or DCS TM500 0.75A...

  • Page 44: Rs485 Wiring

    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 TM500, set jumper W1 to the TERM position. Disconnect the termination resistor on all other external RS485 devices. The termination resistor of the TM500 is disconnected by setting jumper W1 to the "Open"...

  • Page 45: Hart Handheld Wiring

    TM500 Wiring HART 4-20mA Output Wiring: Handheld Communicator The 4-20mA current loop and HART modem connections are shown on p. 39 and p. 40. A handheld HART communicator can be connected to test points TP1 (+) and TP2 (-) with clip leads or to the 4-20mA terminal block.

  • Page 46: Remote Wiring

    18 Gauge, 8 Conductor, Shielded, 100ft (30.48m) Max. Use an extension cable to connect the TM500 remote sensor to the electronics enclosure. Eight wire shielded cable required. The shielded cable should be run through a separate grounded steel conduit (no other cables or wires in the conduit). If you are using your own cable, make sure that the cable length does not exceed 100 feet and has a wire resistance that does not exceed one ohm (18 AWG recommended).
  • Page 47 Fig. 3.12: Remote Sensor Wiring Electronics Enclosure Remote Wiring Terminals are accessed by opening the front display panel Cable Shield Detail Remote Wiring Terminal Located inside J-Box hinged cover panel Remote Wiring Terminal Remote Enclosure Customer Wires Sensor Wires Probe Sensor Wired By Sierra...
  • Page 48 White Blue Blue Blue Blue Green Blue Yellow Yellow Yellow Yellow Orange Yellow No Connection Shield NOTE! Wire colors listed here represent the wire colors of cables supplied by Sierra Instruments. Colors may vary if customer is supplying their own cable.

  • Page 49: Operation (Standard Operation)

    Excel. TM500 Display and Configuration Panel The TM500 has a 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 TM500 cap. Be sure to replace the cap after you are done configuring the TM500.
  • Page 50 Pressing the F3 and F4 keys at the same time brings up the "Reset Total" screen prompt. (refer to p. 18). Fig. 4.2: TM500 Measurement Mode Display Screen Navigation F1 key: Moves up one screen F2 key: Moves down one screen 1456.5 SCFM...
  • Page 51 TM500 Operation Programming: Data Entry using the Display and Configuration Panel There are two 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 52 TM500 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. To exit the programming mode, press EXIT (F4) repeatedly until “Normal Mode”...
  • Page 53 TM500 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 54 TM500 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 55 MaxFlo=5000 SCFM NOTE! If the flow rate exceeds the maximum pulse rate (frequency), the output will stay at 100 Hz and the TM500 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 56 TM500 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 57 TM500 Operation Serial Communication Settings If a "Serial Communication" feature was purchased, the Serial communication settings can be programmed by pressing I/O (F1) key from the "Main Menu". The screen will show: I/O MENU EXIT Press COM (F2) to select Serial communication.
  • Page 58 TM500 Operation To Program Display Screens #1 & 2: From the "Main Menu" press DSP (F3) to select the display menu: DISPLAY/PASSWORD EXIT Press DSP (F1) key. The display will show: DSP1L1 = Flo rate These are the selections for the Display #1 line #1.
  • Page 59 This menu is used to set the units for flow, temperature, and pressure as well as the setting of reference temperature and reference pressure. These values will be set at Sierra Instruments 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."...
  • Page 60 TM500 Operation FLO UNT = SCFM Press NXT (F1) to change selection and OK (F4) to accept. NOTE! The totalizer (total flow measured) will roll over when reaching a certain value. The maximum value is dependent on the flow units selected (see Totalizer Rollover p. 67).
  • Page 61 TM500 Operation TmpRef = 60 °F Press CHG (F1) to change the reference and OK (F4) to accept. 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.
  • Page 62 TM500 Operation FLOW MENU 1 EXIT Then press FM2 (F3): FLOW MENU 2 EXIT NOTE! The SPC function key will only appear and be accessible from a Level 2 password. Then press PRM (F3). This will move into settings for flow cutoff, pipe diameter, and filter value. These settings will be followed by the high and low alarm settings for flow rate and/or temperature.
  • Page 63 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 TM500-View Software. If the digital output is assigned to an alarm, changing the value here will change that setting.
  • Page 64 TM500 Operation HiTmpAlm = 200 F Press OK (F4) to accept the value. Low Temperature Alarm This is the lower temperature limit alarm value that can be associated with the alarm output. An alarm code is generated when the temperature value is below this limit. If no alarm is needed, set this value to zero.
  • Page 65 NOTE! Simulation Mode will be cleared if the power is cycled. K Factor The K Factor allows the user to adjust the meter’s calibration. The Sierra Instruments flow meter increases the calculated flow rate by the K Factor. This results in a direct scaling of the meter’s output...
  • Page 66 Upon pressing OK (F4), an option to reset the NVRAM CRC will follow. 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 Sierra Instruments Customer Service if you need assistance.
  • Page 67 Press YES (F4) and enter password to reset total and elapsed time. Press NO (F1) to cancel. NOTE! This feature is not available on non-resettable units. Totalizer Rollover: The TM500 has an automatic roll-over function. The total flow count of the TM500 will roll over after 99,999,999,999. Except for:...
  • Page 68 Operation Recommended Conditions for Performing TM-Cal™ Test Sierra Instruments recommends the TM-Cal™ test be run under flowing conditions, especially in smaller pipe sizes. If the TM-Cal™ test does not produce a "PASS" result, refer to "TM-Cal™ Test Results" on page 69.
  • Page 69 TM500 Operation Flo: Go to zero EXIT Press OK (F4) to continue. Flo: Hold value EXIT When ready to begin the test, press OK (F4). Take Control off-line EXIT WARNING! If you are using closed loop control, the system needs to be taken off-line during the test.
  • Page 70 * Natural Gas is defined as the NAESB Natural Gas mix (94.9% Methane, 0.7% CO2, 1.6% N2, 0.3% Propane, and 2.5% Ethane). After installing your TM500 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 71: Programming

    TM500 Operation Accessing the Gas-Mix ™ Gas Selection Menu Feature Enter the programming mode on the meter (refer to p. 51) and then follow these instructions to access the Gas-Mix ™ feature: MAIN MENU EXIT Press FLO (F2) from the "Main Menu" to enter Flow Menu 1.
  • Page 72 TM500 Operation Gas Mix Single Gas Menu To select a pure gas, choose "Pure Gas" (F1) and then press "OK" (F4) to accept the setting: Gas=Air EXIT To choose any pure gas, press NXT (F1) to cycle through until the correct gas is displayed and press OK (F4) to select the gas.
  • Page 73 Mix ™ and can exit. Press OK (F4) to set the mixture. After the gases are programmed, the TM500 will begin to monitor flow based on the pre-calibrated algorithm for the gas/gas mix selected in the Gas-Mix ™ feature. The screen will show the flow in units and the total flow similar to the example below: 1162.52 SCFM...
  • Page 74 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 TM500 is operating. Orange LED indicator LP2 blinks when Modbus signals are received and Yellow LP1 blinks when Modbus signals are transmitted.
  • Page 75 TM500 Communication Read Multiple Registers (command 03) This command reads one or more 16-bit registers from the TM500 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 76 TM500 Communication Table 5.1: TM500 Modbus Registers (cont'd) Modbus Data Type Description Units Register 40018 16-bit int Control Register (Write Only): Reset Total = 2 Perform TM-Cal = 173 Abort TM-Cal = 174 40019 16-bit int Model Status (Read only) M500 = 0x1000...
  • Page 77 TM500 Communication NOTES! • In Least Significant Word (LSW) and Most Significant Word (MSW), “word” is one 16-bit Modbus register. A 32-bit float or 32-bit integer is stored in a pair of Modbus registers. When a register is designated as “32-bit int LSW”, it means that bits 0-15 of the variable are in that register.
  • Page 78 TM500 Communication Table 5.3: Status 2 Bits Definitions for Modbus Address 40017 Definition Comment Pulse hardware Busy HART hardware TM500 TM-Cal in process TM-Cal fail TM-Cal aborted TM-Cal warning Write Single Register (Command 06) This command is used to perform miscellaneous functions such as clearing the totalizer and elapsed time.
  • Page 79 TM500 Communication In the following tables: S0 – S23 are the significand bits from least to most significant. E0 – E7 are the exponent bits from least to most significant. Sign is 1 if the number is negative, and 0 if the number if positive.
  • Page 80 TM500 Communication <0x00> <0x39> start index = fifty seven, meaning register 40058 <0x00> <0x04 register count = 4 (holding 2 32-bit floating point values) <0x08> number of data bytes = 8 <0x00> <0x00> <0x42> <0x70> value = 60.0% <0x00> <0x00> <0x42> <0x20> value = 40.0% <0xCA>...
  • Page 81 Modbus can be used to access and program gases/gas mixes in the Gas-Mix ™ feature available on the Model TM500. Selecting TM500 Gases and Gas Mixes Modbus register 40057 is used to set the gas type, which may be a pure gas or gas mix. Register 40057 will read zero, and register 40056 will read the gas selection that was chosen.
  • Page 82 TM500 Communication Table 5.4: Gas Selection Codes Selection Code Selection Code Methane Oxygen CO2 (Carbon Dioxide) Reserved Nitrogen Butane Hydrogen Natural Gas Ethane Argon Ethylene Propane Propylene Helium Mixed gas (must set percentages) Oxygen NOTE! Natural gas is defined as NAESB typical mixture of 94.9% Methane, 2.5% Ethane, 1.6% Nitrogen, 0.7% CO2, 0.3% Propane.
  • Page 83 TM500 Communication 40076 32-bit float LSW Hydrogen percentage Percent (31.4 = 31.4%) 40077 32-bit float MSW 40078 32-bit float LSW Reserved 40079 32-bit float MSW 40080 32-bit float LSW Ethane percentage Percent (31.4 = 31.4%) 40081 32-bit float MSW 40082 - 40091...
  • Page 84 Variable. HART Communication is supported on this loop. The 4-20mA output of the TM500 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...
  • Page 85 Communication HART Indicators Green LED indicator LP3 cycles on and off to indicate that the TM500 is operating. Orange LED indicator LP2 blinks when HART signals are received and Yellow LP1 blinks when HART signals are transmitted. The LEDs are located behind the display panel.
  • Page 86 TM500 Communication Dynamic Variables Four Dynamic Variables are implemented. Variable Meaning Units Flow Rate In Selected Units Total In Selected Units Temperature In Selected Units Elapsed Time In Hours Status Information Device Status Bit 4 ("More Status Available") is set when any failure is detected.
  • Page 87 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 Sierra Instruments Instruments, TM500 Device Type Transmitter HART revision Device Description available...

  • Page 88: Maintenance

    Refer to "Returning Your Meter" on p. 112. Flow Calibration and Calibration Validation To ensure high accuracy of your Model TM500 Flow Meter, Sierra Instruments provides a full NIST traceable calibration. It is recommended that the meter's accuracy be checked annually by performing...
  • Page 89 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 The 100 to 240VAC power option TM500 does not have a replaceable fuse. To replace the fuse: The fuse F1 is located near the power terminal block and can be removed by using tweezers or needle-nose pliers.
  • Page 90 TM500 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 91 TM500 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 92 TM500 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. Slide the probe back out of the retractor until the cable is straight and taut.
  • Page 93 TM500 Maintenance 5. Secure the probe in place by tightening the compression nut with a 1 ⅛" wrench and a 1 ¼" wrench on the compression fitting. See p. 27 of the manual for detailed instructions to tighten the compression nut.

  • Page 94: Troubleshooting

    CAUTION! The electronics and sensor supplied by Sierra Instruments 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 TM500 Flow meter, call Sierra Instruments Customer Service Department, Technical Assistance at (831) 373-0200.
  • Page 95 The 100 to 240VAC power option TM500 does not have a replaceable fuse. Troubleshooting TM-Cal™ If the TM500 Meter fails a TM-Cal™ Calibration Validation test, there are a few reasons that could be the cause: 1. Flow rate in the pipe: •...
  • Page 96 3. Inadequate DC power source. 4. The TM500 requires 12 to 24VDC at to 6 Watts minimum to operate. A 20 Watt power supply is recommended for powering the TM500 to ensure it operates properly under all temperature ventilation, and power on conditions. If the voltage supplied at the input terminals of the TM500 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 97 Check ALM = LoTempAlm Check the CSV voltage in ENG menu in ENG Screens, refer to page 18. It should be approximately 0.04 volts when TM500 is measuring no flow and up to 0.25 volts at high flow. Measure resistance of the sensor wires, the wires must be removed from TM500 terminal block, refer to page 35.
  • Page 98 TM500 Troubleshooting Alarm Codes continued The CSV Voltage is out of the acceptable range. This may be a result of failed CSV Volt Error electronics, parameters, or sensor connections. Refer to action of Alarm Code 22. The VFLO Voltage is out of the acceptable range. This may be a result of failed VFLO Volt Error electronics, parameters, or sensor connections.

  • Page 99: Specifications

    TM-Cal™: In situ, operator-initiated calibration validation Operating Specs Gas-Mix Selections: Pure Gas Menu, Gas Mix Menu. Visit www.sierraInstruments.com/TM500 for more information on availability of current gases. Units of Measurement (field selectable): SCFM, SCFH, NM3/M, NM3/H, NM3/D, NLPS, NLPM, NLPH, MCFD, MSCFD, SCFD, MMSCFD, MMSCFM, SM3/D, SM3/H, SM3/M, LB/S, LB/M, LB/H, LB/D, KG/S, KG/M, KG/H, SLPM, MT/H Gas Pressure (maximum at 100º...
  • Page 100 0-34,980 0-50,370 0-55,180 NOTE! To determine if the TM500 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. Maximum Flow Ranges for 745S Inline Flow Meters...
  • Page 101 Flow Meter Installation: A 3/ 4 " MNPT compression fitting is provided with the TM500 to connect with a customer supplied 3/ 4 " female branch outlet welded to the pipe. Extra 3/ 4 " and 1" MNPT compression fittings are an ordering...

  • Page 102: Agency Approvals

    TM500 Appendix Agency Approvals CE: Approved EMC Directive; 2014/30/EU Electrical Equipment for Measurement, Control and Lab Use: EN61326-1:2013 Low Voltage Directive (LVD): 2014/35/EU Product Safety Testing: EN 61010-1: 2010 Pressure Equipment Directive: 2014/68/EU Weld Testing: EN ISO 15614-1 and EN ISO 9606-1, ASME B31.3 FM (FM21US0124X) and FMc (FM21CA0090X): Approved Class I, Division 1, Groups B,C,D;...
  • Page 103 "HH" 9.3±0.3 "LL" (236±7.6) Ø.75 PROBE (Ø19.0) .73" (18.5) DIMENSIONAL Table 7.1: TM500 Insertion Meter with 316 stainless steel probe Probe Size Probe Size Dimension “LL” ± .10 Dimension "HH" ±.30 [model code] [inches] [inches / millimeters] [inches / millimeters] 15"...
  • Page 104 TM500 Appendix Fig. 7.2: Remote TM500 Insertion Meter with Retractor Dimensions Ø3.6 (Ø91) (206) (112) (117) (51) REMOTE (99) ENCLOSURE 7.2±.2 (183±5) (132) ELECTRONICS ENCLOSURE 2X 3/4" NPT, FEMALE "HH" CONDUIT, 3/4", METAL 9.3±0.3 "LL" 236±76 SHIELDED CABLE, 18 Gauge, 8-CONDUCTOR, 100FT (30.48m) MAX.
  • Page 105 TM500 Appendix Fig. 7.3: Remote Mounting Kit Dimensions SIDE VIEW BRACKET 2x U-BOLT W/NUT JAM NUT SEE ADAPTER DETAIL PROJECTIONS ADAPTER WASHER Ø2.38 2 IN. PIPE THREADS ADAPTER DETAIL FRONT VIEW TM500 ENCLOSURE 2.81 4x Ø.344 2.81 MOUNTING HOLE DETAIL...
  • Page 106 7.9±.2 (132) (201±5) 2X 3/4IN. NPT, "HH" FEMALE "LL" (18.5) Table 7.4: TM500 Insertion Meter with 316 stainless steel probe Probe Size Probe Size Dimension “LL” ± .10 Dimension "HH" ± .30 [model code] [inches] [inches / millimeters] [inches / millimeters] 6"...
  • Page 107 "LL" CONDUIT, 3/4", METAL SHIELDED CABLE, .73" 18 Gauge, 8-CONDUCTOR, (18.5) 100FT (30.48m) MAX. Table 7.5: TM500 Insertion Remote Meter with 316 stainless steel probe Probe Size Probe Size Dimension “LL” ± .10 Dimension “HH” ± .30 [model code] [inches] [inches / millimeters] [inches / millimeters] 6"...
  • Page 108 TM500 Appendix Fig. 7.6: TM500 Inline Meter with 316 Stainless Steel Flow Body and NPT End Connections Dimensions (206) (117) (109) 2x 3/4 inch NPT Female (132) “H” 2x NPT Male Thread “L” Table 7.6: TM500 Inline Meter with 316 Stainless Steel Flow Body and NPT End Connections...
  • Page 109 TM500 Appendix Fig 7.7:  TM500 Inline Remote Meter with 316 Stainless Steel Flow Body and NPT End Connections Dimensions (91) (112) (51) (117) (114) (132) Remote Cable, “HH” 18 Gauge, 8 Conductor, Shielded, 100FT Max. 2x NPT Male Thread “L”...
  • Page 110 TM500 Appendix Fig. 7.8:  TM500 Inline Meter with 316 Stainless Steel Flow Body and 150 lb RF Flange End Connections Dimensions (206) (109) (117) 2x 3/4 inch NPT Female (132) “H” “L” 2X Flange, Raised Face, ANSI B16.5, 316 SST Table 7.8: TM500 Inline Meter with 316 Stainless Steel Flow Body and 150 lb RF Flange End...

  • Page 111: Dimensions

    TM500 Appendix Fig 7.9:  TM500 Inline Remote Meter with 316 Stainless Steel Flow Body and 150 lb RF Flange End Connections Dimensions (91) (112) (51) (117) 2X 3/4 " NPT, (114) Female (132) “HH” Remote Cable, 8 Conductor, Shielded, 100FT Max.
  • Page 112 TM500 Appendix Fig. 7.10:  TM500 Inline Meter with 316 Stainless Steel Flow Body and 300 lb RF Flange End Connections Dimensions (206) (117) (109) 2x 3/4 inch NPT Female (132) “H” “L” 2X FLANGE, RAISED FACE, ANSI B16.5, 316 SST Table 7.10: ...
  • Page 113 TM500 Appendix Fig 7.11:  TM500 Inline Remote Meter with 316 Stainless Steel Flow Body and 300 lb RF Flange End Connections Dimensions (91) (112) (51) (117) 2X 3/4" (114) NPT, Female (132) “HH” Remote Cable, 18 gauge, 8 Conductor, Shielded, 100FT Max.
  • Page 114 Warranty Policy Limited Warranty Policy- Register Online All Sierra products are warranted to be free from defects in material and workmanship and will be repaired or replaced at no charge to Buyer, provided return or rejection of product is made within a reasonable period but no longer than one (1) year for calibration and non-calibration defects, from date of delivery.
  • Page 115 Appendix Pack your instrument carefully. Use the original packaging and foam or bubble wrap (packing peanuts NOT recommended) and include a copy of the RMA form (complete with Sierra supplied RMA number) with the unit(s). Ship the unit(s) to the following address: Sierra Instruments, Inc.
  • Page 116 TM500 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...
  • Page 117 TM500 Appendix Index Access to Electronics, p. 35 Preventative Maintenance, p. 89 Alarm Codes, p. 97 Product Description, p. 19 Alarm wiring, p. 41 Programming Analog 4-20mA output, p. 52 Analog 4-20mA Output, p. 52 Breakage or Damage of Probe, p. 87 Alarm Output, p.
  • Page 118 Indicates compliance with the UKCA (UK Conformity Assessed) regulations for Great Britain. Enclosure Protection Classification per IEC 60529: Protected against the ingress of dust and Immersion. Sierra Instruments 5 Harris Court, Building L Monterey, CA 93940 North America: 1-831-373-0200 www.sierrainstruments.com...

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