Pulsar MDot Instruction Manual
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Pulsar MDot Instruction Manual

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Model MDot
TM
Instruction Manual
109672, Rev. B

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Summary of Contents for Pulsar MDot

  • Page 1 Model MDot Instruction Manual 109672, Rev. B...
  • Page 3 Please note that Pulsar Measurement reserves the right to change and/ or improve the product design and specifi cation without notice.

  • Page 4: Table Of Contents

    Model MDot Table of Contents 1. Introduction Pages 6-18 a. Quick Start Guide ............... . . p. 6 b.
  • Page 5 Model MDot Table of Contents 7. Appendices Pages 93-102 a. Specifications ................p. 93 b.

  • Page 6: Quick Start Guide

    Check the remaining fl ow meter settings by accessing the meter settings either through the front panel of the display or by using the MDot View software tool. Record the settings in the spaces given for items A - E on the following page.
  • Page 7 After applying power to your meter, check items A - E below by accessing the meter settings either through the front panel of the meter's display or by using the MDot View software tool. Which flow units have been set in meter? (SCFM, KG/H, etc..)
  • Page 8 MDot Introduction Fig. 1.1: MDot Menu Tree - Main Menu Enter menu by scrolling to display 4 and entering the password MAIN MENU I/O FLO DSP EXIT Display Menu, p. 12 Flow Menu 1, p. 10 If RS485 hardware detected...
  • Page 9 MDot Introduction Fig. 1.2: MDot Menu Tree - Digital Outputs MAIN MENU I/O FLO DSP EXIT I/O MENU I/O COM 420 EXIT Set I/O PUL 420 EXIT Not used OUT= Pulse Pulse HiFloAlm LoFloAlm HiTempAlm LoTempAlm Pulse Alarm output SystemAlm...
  • Page 10 MDot Introduction Fig. 1.3: MDot Menu Tree - Flow Menu 1 MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT Flow Menu 2 Menu, p. 11 DIAGNOSTIC FLO UNT=SCFM SCFM SCFH EXIT NM3/H NM3/M KG/H KG/M KG/S TMP UNT=°...
  • Page 11 MDot Introduction Fig. 1.4: MDot 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...
  • Page 12 MDot Introduction Fig. 1.5: MDot Menu Tree - Display Menu MAIN MENU I/O    FLO    DSP    EXIT DISPLAY/PASSWORD DSP            PSW    EXIT Display 1  Line 1 FLo rate DSP1L1=FLo rate PASSWD=1234 Total NXT                             OK CHG                            OK Elps Display 1  Temp Line 2 Alarm FLo rate DSP1L2=Total Total NXT                             OK Elps Display 2  Temp Line 1 Alarm FLo rate DSP2L1=temp Total NXT                             OK Elps Display 2 ...
  • Page 13 MDot Introduction Fig. 1.6: MDot Menu Tree - MDot Cal Menu MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT DIAGNOSTIC MENU SIM Cal EXIT Mdot Cal MENU EXIT VERIFY MDot Cal? Hold value Flo: Hold value...
  • Page 14 MDot Introduction Fig. 1.7: MDot Menu Tree - MDot GasSelect Menu MAIN MENU I/O FLO DSP EXIT FLOW MENU 1 DGN UNT FM2 EXIT FLOW MENU 2 Methane GAS SPC PRM EXIT Gas Mix Be sure mixture equals 100%. Methane...
  • Page 15 Pwr_Cycl=24 Display 18 Number of errors in total flow measurement Err_tot=0 CAL‐V= 0.1 CAL‐V measurement value Display 19 Pwr Off=48.0 Elapsed time of meter power off in hours  F3 & F4 pressed at the same time will initiate a "Total" reset Fig. 1.9: MDot Menu Tree - Reset Flow Total F3 & F4 pressed at the same time will  initiate a "Total" reset Reset Total? NO                              YES Resetting Total                               Introduction | 15...
  • Page 16 (NM3/hr, NLPM) with no additional temperature or pressure measurements required. Calibration Validation Validate the calibration of the MDot in the field using the MDot 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 17 MDot View is a free, PC-based software program from Pulsar Measurement that interfaces to the MDot through the USB port. MDot View can be used to display flow meter readings and change the configuration. The software is available for download on the Pulsar Measurement website.
  • Page 18 Configuration Panel for field configuration of flow meter settings such as gas selection, 4-20mA scaling, pulse output scaling, pipe area, flow cutoff, flow filtering, display configurations, diagnostics, communication parameters, and alarm limits. Fig. 1.10: MDot Function Diagram Installation Scope Standard I/O...

  • Page 19: General

    MDot Installation This section describes how to install the Pulsar Measurement MDot 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 20: Lateral Placement

    Instructions for Flow Meter Lateral Placement Install the MDot fl ow meter so that it is far enough away from bends in the pipe, obstructions, or changes in line sizes to ensure a consistent fl ow profi le. See Fig. 2.1 below for your meter type.
  • Page 21 Fig. 2.2: Installation at 180° Alternate Installations - Vertical Pipes or Restricted Installation Spaces When restricted physical installation space exists, the MDot can also be installed at other angles. Please note that the display and the enclosure orientation can be rotated in 90° increments.
  • Page 22 2. Assemble the compression fitting and branch fitting hand tight onto the probe of the MDot. 3. Insert the probe into the hole in the pipe and use the MDot probe and compression fitting to align the branch fitting with the hole and the probe perpendicular to the pipe.

  • Page 23: Installation Depth

    MDot Installation Installation Depth The installation depth of the sensor in the pipe is dependent on the pipe size. To get the most accurate reading, proper placement of the sensor window within the pipe is necessary. As shown in Fig 2.5, the end of the sensor window should be 0.73" (18.5 mm) past the center line of the pipe.
  • Page 24 Installation Rotating the Enclosure The MDot enclosure has been designed to allow the enclosure to rotate for optimal viewing of the display. To rotate the enclosure, first loosen the two set screws near the Flow Direction Indicator, then unscrew and remove the flow direction indicator. Rotate the enclosure into the desired position, reinstall the flow direction indicator, and tighten the set screws.
  • Page 25 MDot Installation Changing the Orientation of the MDot Optional Display The optional display can be rotated in 90° increments for optimum viewing of the screen. First, open the enclosure by unscrewing the enclosure cap and loosen the two captive screws to open the display assembly.
  • Page 26 Installation Mounting Instructions - Compression Fittings The MDot is mounted through a 0.781" hole and a 1-inch female NPT branch outlet in the customer's pipe. Insertion style fl ow meters are not designed for use in pipes smaller than 1½".

  • Page 27: Mounting Instructions

    MDot Installation Mounting Instructions - Compression Fittings (Inline and Insertion Meters Previously Installed) In cases wher a compression fitting has already been swaged in an inline flow body or an insertion meter, use the following procedure. • Carefully insert the probe with swaged ferrules into the fitting until the front ferrule seats against the fitting (see Figure 2.9)
  • Page 28 MDot 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 29 MDot 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 30 MDot 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 31 MDot 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. Fully tighten compression fitting (refer to the instructions on p.
  • Page 32 MDot Wiring Wiring Instructions To wire the MDot connect the power and signal wires to the terminal blocks according to the label and instructions on the following pages. Fig. 3.1: MDot Wiring Access Loosen these two screws to open the display and access wiring terminals.

  • Page 33: Signal Wiring

    All plumbing and electrical installations of flow meters must be in compliance with local codes, the end user’s best engineering practices, and manufacturer’s recommendations. • Do not install the MDot enclosure near an igniter, igniter-controller or switching equipment to eliminate the possibility of noise interference. •...
  • Page 34 External DC power supply must provide 12 to 24V DC (10 to 30V DC full input power range) at 6 Watts minimum. (With 12V DC power, the MDot can use up to 500mA. With 24V DC power, the MDot can use up to 250mA.) A 20 Watt or greater power supply is recommended to ensure it can provide enough current under all temperature, ventilation, and power on conditions.
  • Page 35 MDot Wiring 4-20mA Output Wiring: Customer-Supplied Power Source (Recommended) Connect 4-20mA wiring as shown in the diagram below. Fig. 3.3: 4-20mA Output Wiring for Isolated Customer-Supplied Power Source Customer PLC or DCS AnerFlow MDot +12 to 24V DC 4-20mA Flow Rate or Temperature...
  • Page 36 MDot Wiring 4-20mA Output Wiring: Loop Power Provided by MDot Connect 4-20mA wiring as shown in the diagram below. Fig. 3.4: 4-20mA Output Wiring for Loop Power Provided by MDot MDot Customer PLC or DCS AnerFlow +12 to 24V DC...
  • Page 37 The pulse/alarm output is an open collector circuit capable of sinking a maximum of 20mA of current. Pulse or alarm selection is programmed using the display or MDot View. Only one option, pulse or alarm, can be active at a time.
  • Page 38 The pulse/alarm output is an open collector circuit capable of sinking a maximum of 20mA of current. Pulse or alarm selection is programmed using the display or MDot View. Only one option, pulse or alarm, can be active at a time.

  • Page 39: Rs485 Wiring: Modbus Rtu

    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 MDot, set jumper W1 to the Terminated position, see Fig. 3.7. Disconnect the termination resistor on all other external RS485 devices. The termination resistor of the MDot is disconnected by setting jumper W1 to the Open position.

  • Page 40: Hart Wiring

    MDot Wiring HART Wiring The HART connections are made as shown in the diagram below. NOTE: Meters ordered with HART will be confi gured for fl ow as default. If the customer changes the 4-20mA output to temperature, HART should report temperature.
  • Page 41 MDot Wiring HART 4-20mA Output Wiring: Handheld Communicator The 4-20mA current loop connections are made as shown in the diagram below. A hand-held HART communicator can be connected to test points TP12 (+) and TP13 (-) with clip leads or to the 4-20mA terminal block.
  • Page 42 HART 4-20mA Output Wiring: Loop Power Provided by MDot The 4-20mA current loop and HART modem connections are made as shown in the diagram below. Fig. 3.10: HART 4-20mA Output Wiring, Loop Power Provided by MDot Customer PLC or DCS...

  • Page 43: Start Up

    Excel. MDot Display and Configuration Panel The MDot has an optional 2 line x 16 character display with 4 mechanical buttons. The meter can be programmed by using the display and configuration panel. The configuration panel can be accessed by removing the enclosure cap.
  • Page 44 (refer to p. 15). Pressing the F3 and F4 keys at the same time brings up the Reset Total screen prompt. Fig. 4.2: MDot Measurement Mode Display Screen Navigation F1 key: Moves up one screen F2 key: Moves down one screen 1456.5 SCFM...
  • Page 45 MDot Operation Programming: Data Entry using the Display and Configuration Panel There are 2 basic types of menu entries: one for changing value or string and one for selecting from a selection list. To Change a Value or String : VALUE = 0.91234...
  • Page 46 MDot 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. Press EXIT (F4) repeatedly until “Normal Mode”...
  • Page 47 MDot Operation 4 mA = 0 SCFM Enter the value for the 4mA and press OK (F4). NOTE: When the flow rate exceeds the programmed value for the 20mA set point, the analog output will stay at 20mA and an alarm code will be generated.
  • Page 48 MDot Operation Pulse/alarm Output The Pulse/alarm feature can be accessed from the Main Menu, press I/O (F1). EXIT Press OUT (F1) to select the pulse output. The following screen will show: OUT = Pulse Press NEXT (F1) to cycle through output options until you have the selection for "OUT=Pulse" and press OK (F4).
  • Page 49 MaxFlo=5000 SCFM NOTE: If the flow rate exceeds the maximum pulse rate (frequency), the output will stay at 100 Hz and the MDot will issue an alarm code. Alarm Output To access the Pulse/alarm feature, press I/O (F1) key from the Main Menu screen. The screen will...
  • Page 50 MDot Operation OUT = HiFloAlm Then press NXT (F1) to select the correct alarm and press OK (F4). Selections are: Not used Pulse HiFloAlm = High Flow Alarm LoFloAlm = Low Flow Alarm HiTempAlm = High Temperature Alarm LoTempAlm = Low Temperature Alarm System Alarm When the output is set to Alarm and there is no alarm condition, the output will be on (0 volts).
  • Page 51 MDot Operation None Modbus HART NOTE: Any selection other than “None” requires the communication option for the selected communication type. If enabling a communication option, see the Communications Protocols section of this manual. Display Setup There are four display screens that you can cycle through in normal operating mode (see Figure 4.2 on p.
  • Page 52 MDot Operation When the selection is correct, press OK (F4) to accept. The display will then go through the same process for all 4 lines of the 2 programmable displays (DSP1L1, DSP1L2, DSP2L1 and DSP2L2). After the last line of display 2 is accepted, the display will show the following menu: ALTERNATE = Off This menu allows you to alternate between menu display 1 and 2 every few seconds.
  • Page 53 NLPM NM3/D MCFD (MSCFD) NM3/M LBS/M NLPS SLPM MMSCFM (MMCFM) KG/H LBS/S SM3/M SCFD MT/H NOTE: The MDot re-calculates area, 4 and 20mA values, maximum flow for the pulse output and flow cutoff when changing flow units. Operation | 53...
  • Page 54 MDot Operation Temperature Units After pressing OK (F4) to accept the Flow unit the display will prompt for the temperature unit setting: TMP UNT= ° F Press NXT (F1) to change selection and OK (F4) to accept. Selections for Temperature units are: °C or °F...

  • Page 55: Programming

    MDot Operation Accessing Flow Parameters and Alarm Settings This is the menu used to set various flow parameter values. They are: Flow cutoff, pipe diameter, filter, high and low alarm for flow and temperature. NOTE: The parameters in this menu are set to the customer specifications at the factory. They should only be changed when changing the application of the flow meter.
  • Page 56 These alarms can be used without the digital output assigned to the alarm. If that is the case, the alarm status will only be shown on the display, through serial communication, or MDot View. If the digital output is assigned to an alarm, changing the value here will change that setting.
  • Page 57 MDot Operation To set the parameters for a low flow rate alarm, press CHG (F1): LoFloAlm = 100 SCFM Press OK (F4) to accept the value. 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.
  • Page 58 MDot Operation The menu is accessible from the Main Menu by pressing FLO: FLOW MENU 1 EXIT Pressing DGN (F1) will show: DIAGNOSTIC EXIT Pressing SIM (F1) will show: Simulate Flow? Press YES (F1) to continue. FloSim = 0 SCFM Enter the value and then press OK (F4).
  • Page 59 NOTE: Simulation Mode will be exited if the power is cycled. K Factor The K Factor allows the user to adjust the meter’s calibration. The Pulsar Measurement flow meter increases the calculated flow rate by the K Factor. This results in a direct scaling of the meter’s output across the entire full range.
  • Page 60 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 MDot has an automatic roll-over function. The total flow count of the MDot will roll over after 99,999,999,999. Except for: MSCFD:...
  • Page 61 Recommended Conditions for Performing MDot Cal Test Pulsar Measurement recommends the MDot Cal test be run under flowing conditions, especially in smaller pipe sizes. If the MDot Cal test does not produce a "PASS" result, refer to "MDot Cal Test Results" on page 61.
  • Page 62 T=xx This test takes about 3 minutes (200 seconds). During the test, the display will show the MDot Cal value changing as the power to the sensor is adjusted. "T=xx" is a MDot Cal timer indicating how much time is left to finish the test.

  • Page 63: Mdot Cal

    MDot Operation MDot Cal Test Results Upon test completion, the final MDot Cal value will be displayed along with a Pass, Fail, or Warning message: • Pass: less than ±0.80 • Warning: between ±0.80 to ±1.0 • Fail: greater than ±1.0 Recommended next steps if a "Warning"...
  • Page 64 Press GAS (F1) to access the MDot GasSelect feature: Choosing a Gas from the MDot GasSelect Menu The MDot GasSelect Menu will show one of the available gases/gas mixtures: GAS=Air EXIT Press NXT (F1) to choose from a list of gases.
  • Page 65 MDot Operation To create a Digeste Gas mix, choose "Digester gas" from the list and press OK (F4). GAS= Digester gas The screen will show: Methane=0% This screen shows the percentage of the gas mixture allocated to methane. In this case, it shows 0%.
  • Page 66 The MDot will begin to monitor fl ow based on the pre-calibrated algorithm for the gas selected in the MDot GasSelect feature. The screen will show the fl ow in units and the total fl ow similar to the example below: 1162.52 SCFM...
  • Page 67 NOTE: The data shown in brackets < > represents one byte of data. Modbus Indicators LED indicator LP3 cycles on and off to indicate that the MDot is operating. LED indicator LP2 blinks when Modbus signals are received and LP1 blinks when Modbus signals are transmitted. The LEDs are located behind the display panel.
  • Page 68 MDot Communications Read Multiple Registers (command 03) This command reads one or more 16 bit registers from the MDot 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 69 MDot Communications Table 5.1: MDot Modbus Registers (cont'd) Modbus Description Units Register 40019 Reserved 40020 Flow User selected 40021 40022 Total User selected 40023 40024 Reserved 40025 Reserved 40026 Temperature User selected 40027 40028 Elapsed time Hours 40029 40030 MDot Cal result...
  • Page 70 MDot Communications NOTES! • In the table, LSW means Least Significant Word, and MSW means Most Significant Word. In this case a “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 71 Reset total to clear alarm Table 5.3: Status 2 Bits Definitions for Command 04, Modbus Address 40017 Definition Comment Pulse hardware Busy HART hardware Not used MDot Cal in process MDot Cal fail MDot Cal aborted MDot Cal warning Communications | 71...
  • Page 72 MDot Communications Write Single Register (Command 06) This command is used to perform miscellaneous functions such as clearing the totalizer and elapsed time. The register address is Modbus=40018 and the data to write is described in table 5.1. Request: <Meter Address> <Command code=06> <Register address high=0x00> <Register address low=0x11>...
  • Page 73 MDot Communications Floating point data layout Each 32-bit floating point value uses two consecutive Modbus registers. The most significant byte of the lower numbered register holds the least significant byte of the significand. The least significant byte of the lower numbered register holds the next most significant byte of the significand. The most significant byte of the higher numbered register holds the sign bit and most significant 7 bits of the exponent.
  • Page 74 MDot Communications Fourth byte (LSB of higher register) Value bit E0 Example: For Methane, register pair 40058-40059 must be set to 60. To set Carbon Dioxide to 40, use registers 40060-40061. This requires setting the four registers 40058 through 40061. Register pair 40058-40059 will be set to 60.0, register pair 40060-40061 will be set to 40.0.
  • Page 75 MDot Communications Communication Protocol and Parameters To program the communication parameters, start at the Main Menu: MAIN MENU EXIT Then press I/O (F1) to set Inputs/Outputs: SET I/O EXIT Then press COM (F1) to select communication parameters. Set Bus protocol for Modbus:...
  • Page 76 NOTE: Power cycle is required for the new settings to take effect. Using Modbus to Program MDot GasSelect Modbus can be used to access and program gases/gas mixes in the MDot GasSelect feature available on the MDot. Selecting MDot Gases and Gas Mixes Modbus register 40056 selects the gas type, which may be a pure gas or a digester gas mix.
  • Page 77 When Digester gas mix type is selected, the percentages of each gas in the mix must be set. These percentages are 32-bit floating point numbers. Each constituent gas has a pair of registers to hold its percentage. Table 5.5: MDot Modbus Holding Registers for MDot GasSelect 40056 16-bit int...
  • Page 78 Communications Scope - HART Communications The Pulsar Measurement MDot transmitter complies with HART Protocol Revision 7.1. This section of the manual specifies all the device-specific features and documents HART Protocol implementation details (e.g., the Engineering Unit Codes supported). The functionality of this Field Device is described sufficiently to allow its proper application in a process and its complete support in HART-capable Host Applications.
  • Page 79 Variable. HART Communication is supported on this loop. The 4-20mA output of the MDot should be configured for flow rate when using HART. If the 4-20mA output is set to report temperature, HART communication will report the 4-20mA value for temperature rather than flow.
  • Page 80 MDot Communications Set Bus protocol for HART: Comm=HART Press NXT (F1) until HART is selected as shown and then press OK (F4) to accept the setting. NOTE: Power cycle is required for the new settings to take effect. Variable Meaning...
  • Page 81 MDot Communications Additional Device Status (Command 48) Command #48 returns 2 Device-Specific Status bytes of data, with the following status information: These bits are set when an alarm or error condition is present. The bit automatically clears when the condition returns to its normal state.
  • Page 82 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 Pulsar Measurement, MDot Device Type Transmitter HART revision Device Description available Number and type of sensors...
  • Page 83 Refer to "Returning Your Meter" on p. 102. Flow Calibration and Calibration Validation To ensure high accuracy of your MDot flow meter, Pulsar Measurement provides a full NIST traceable calibration. It is recommended that the meter's accuracy be checked annually by performing the MDot Cal Calibration Validation test.
  • Page 84 MDot Maintenance Fuse Replacement WARNING! Turn input power OFF before removing or installing a fuse. Use only recommended fuse replacements. Verify the fuse is defective by measuring it with an Ohm Meter (Two replacement fuses are provided with each unit). Replacement fuse is Littelfuse part number 0454.750MR...
  • Page 85 MDot 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 86 MDot 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 87 MDot 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 88 MDot Maintenance NOTE: At a maximum system pressure of 150psig, the force required to push the probe in place to tighten the compression Nut will be approximately 66 lbs. 3. Slowly open the ball valve to the full open position. Push the meter and probe into the pipe, then hand tighten the compression nut onto the compression fitting.

  • Page 89: Troubleshooting

    Interchanging sensors will decrease the accuracy of the flow meter. If you experience a problem with your MDot flow meter, call Pulsar Measurement Customer Service Department, Technical Assistance at +44 (0) 1684 891371 (United Kingdom) or +1 855-300-9151 (Canada/United States).
  • Page 90 If fuse is OK and unit still won’t power up, call Pulsar Measurement for additional assistance Troubleshooting MDot Cal If the MDot meter fails a MDot CAL Calibration Validation test, there may be a few reasons. Follow these recommendations: 1. Flow rate in the pipe: •...
  • Page 91 2. Inadequate power source. The MDot requires 12 to 24V DC at to 6 Watts to operate. A 20 Watt power supply is recommended for powering the MDot to ensure it operates properly under all temperature ventilation, and power on conditions. If the voltage supplied at the input terminals of the MDot is not within the range of 10V DC to 30V DC, a variety of problems can occur including a dim display, inaccurate flow readings or faulty 4-20mA, pulse and communication interface.
  • Page 92 Verify that parameters in MDot are set correctly. If MDot View is available, check parameter settings in Configuration page. If using MDot front panel, check parameters in UNIT menu of FLOW MENU 1 and PRM menu of FLOW MENU 2, refer to pages 10-11.
  • Page 93 Flow Response Time: 0.8 seconds (one time constant) Temperature Accuracy: ±1° F (±0.6° C) Calibration: Factory Calibration to NIST traceable standards MDot Cal: In situ, operator-initiated calibration validation Operating Specs MDot Gas Selections: Air, Methane and Digester gas mix Units of Measurement (field selectable):...
  • Page 94 0-27,900 0-30,600 NOTE: To determine if the MDot 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 Inline Flow Meters...
  • Page 95 Input Power: 12 to 24V DC, 6 watts • Full Input Power Range: 10 to 30V DC. • A 20 Watt or greater power supply is recommended to power the MDot. • Class I Equipment (Electrical Grounding Required for Safety). •...

  • Page 96: Agency Approvals

    MDot Appendix Agency Approvals CE: Approved EMC Directive; 2014/30/EU Electrical Equipment for Measurement, Control and Lab Use: EN61326-1:2013 Pressure Equipment Directive: 2014/68/EU Article 13 Weld Testing: EN ISO 15614-1 and EN ISO 9606-1, ASME B31.3 FM (FM22US0064X) and FMc (FM22CA0045X): Approved Class I, Division 1, Groups B,C,D;...
  • Page 97 MDot Appendix Fig. 7.1 Insertion Meter with Retractor Dimensions Measurements shown in inches (millimeters). 5.97 [151.6] 4.64 [118.0] (61.0) 2X 3/4" NPT (160.0) (170.0) FEMALE RESTRAINT CABLE RESTRAINT CABLE MOUNT RETRACTOR WITH 1 INCH FULL PORT BALL VALVE 9.0±.3 "LL"...
  • Page 98 MDot Appendix Fig. 7.2 Insertion Meter Dimensions 5.97 [151.6] 4.64 [118.0] 2.60 [66.1] 2X 3/4˝ FNPT PORTS 6.70 [170.3] ELECTRONICS ENCLOSURE SET SCREWS FLOW DIRECTION INDICATOR PROBE ˝LL˝ NOMINAL LENGTH C L SENSING AREA .73 [18.5] ø.75 [19.1] Table 7.2 Insertion Meter with 316 stainless steel probe...
  • Page 99 MDot Appendix Fig. 7.3 Inline Meter with 316 Stainless Steel Flow Body and NPT End Connections Dimensions Table 7.3 Inline Meter with Choice of Flow Body and NPT End Connections Body Size Body Size Dimension “L” Dimension “H” [model code]...

  • Page 100: Dimensions

    MDot Appendix Fig. 7.4 Inline Meter with 316 Stainless Steel Flow Body and 150lb RF Flange End Connections Dimensions Table 7.4 Inline Meter with Choice of Flow Body and 150lb RF Flange End Connections Dimensions Body Size Body Size Dimension “L”...

  • Page 101: Warranty

    Pulsar Measurement will replace or repair, free of charge, any Pulsar product if it has been proven to be defective within the warranty period. This warranty does not cover any expenses incurred in the removal and re- installation of the product.

  • Page 102: Returning Your Meter

    +1 855-300-9151 (Canada/United States)] can help you through the process of returning a meter for service. If it becomes necessary to return a Pulsar Measurement flow meter for service or recalibration, please follow these steps: 1. A Return Material Authorization (RMA) Number must be obtained from the Pulsar Measurement Customer Service Department prior to returning any MDot meter(s).

  • Page 103: Definitions

    MDot 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 104: Index

    Warranty, p. 106 Flow Menu 1, p. 10 Wiring Flow Menu 2, p. 11 Alarms, p. 37 MDot Cal Menu, p. 13 Pulse/Alarm Outputs, p. 37 Mounting meter, p. 20 Grounding, p. 33 Orientation of meter - Insertion type, p. 24 Input - Local, p.
  • Page 105 I N F O @ P U L S A R M E A S U R E M E N T . C O M +1 888-473-9546 +1 855-300-9151 +44 (0) 1684 891371 Pulsar Measurement is a trading name of Pulsar Process Measurement Ltd. Asia Oceania pulsarmeasurement.com...

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