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Fluke 726/FPC User Manual

Multifunction process calibrator
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®
726
Multifunction Process Calibrator
Users Manual
September 2005
© 2005 Fluke Corporation. All rights reserved.
All product names are trademarks of their respective companies.
Fluke-Direct
.ca
information@ITM.com
1.800.561.8187

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  • Page 1 ® Multifunction Process Calibrator Users Manual September 2005 © 2005 Fluke Corporation. All rights reserved. All product names are trademarks of their respective companies. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 2 LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling.

  • Page 3: Table Of Contents

    Keys.......................... 10 Display ........................13 Configuration Menus ..................... 14 Contrast Adjustment ....................14 Shut Down Mode ...................... 15 CJC........................... 15 Celcius and Fahrenheit (°C and °F)................15 Frequency Pulse Output Voltage................15 Pulse Output Frequency ................... 15 Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 4 % Error Functionality ....................41 Stepping and Ramping the Output................. 41 Manually Stepping the mA Output................42 Auto Ramping the Output..................42 Storing and Recalling Setups..................42 Store a Setup ......................42 Recall a Setup ......................43 Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 5 Cleaning the Calibrator ..................... 54 Service Center Calibration or Repair ................ 54 Replacement Parts ....................54 Accessories ........................56 External Fluke Pressure Module Compatibility ............56 Specifications ........................ 59 DC Voltage Measurement and Source ..............59 DC mA Measurement and Source ................59 Ohms Measurement ....................
  • Page 6 Users Manual Loop Power Supply ....................64 Pulse Read and Pulse Source .................. 64 Pressure Measurement ..................... 64 General Specifications ....................65 Index Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 7 International Symbols ......................7 Input/Output Terminals and Connectors................9 Key Functions ........................11 Thermocouple Types Accepted .................... 22 RTD Types Accepted......................25 mA Step Values ........................42 Replacement Parts ....................... 54 Fluke Pressure Module Compatibility ................... 56 Pressure Modules......................... 57 Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 8 Gage and Differential Pressure Modules................27 Connections for Measuring Pressure ................... 29 Connections for Simulating a 4- to 20-mA Transmitter............31 Electrical Sourcing Connections ................... 33 Connections for Simulating a Thermocouple................ 35 Connection for Simulating a 3- and 4-Wire RTD ..............37 Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 9 SAVE DATA Menu Showing Measurement Memory Location 3, 1 ........44 Calibrating a Thermocouple Transmitter ................46 Calibrating a Pressure-to-Current (P/I) Transmitter .............. 48 Calibrating a Current-to-Pressure (I/P) Transmitter .............. 50 Calibrating a Chart Recorder ....................52 Replacing the Batteries ......................53 Replacement Parts........................ 55 viii Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 10: Introduction

    Stores and recalls calibration screens. Introduction • Control the Calibrator remotely from a PC running a The Fluke 726 Multifunction Process Calibrator (referred terminal emulator program. to as “the Calibrator”) is a handheld, battery-operated instrument that measures and sources electrical and physical parameters.
  • Page 11 29 modules ranging from 1.0 in. H O to 10,000 psi Pulse 1-100,000 1-10,000 Freqency Max 10 kHz Frequency Range 2 CPM to 10 kHz Other functions Loop supply, HART resistor, pressure switch test, save screen, step, ramp, memory, cold junction compensation Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 12: Standard Equipment

    A Warning identifies conditions and actions that pose hazard(s) to the user. A Caution identifies conditions and • 725/726 CD-ROM (contains Users Manual; not actions that may damage the Calibrator or the equipment shown in Figure 1) under test. • 4 AA Batteries (installed) Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 13 • Do not use the Calibrator if it operates abnormally. Protection may be impaired. When in doubt, have the Calibrator serviced. • Do not operate the Calibrator around explosive gas, vapor, or dust. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 14 To avoid possible damage to the Calibrator or to equipment under test: • Disconnect the power and discharge all high-voltage capacitors before testing resistance or continuity. Use the proper input jacks, function, and range for the measurement or sourcing application. • Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 15 Users Manual AC72 Alligator Clips TL75 Test Lead Set Stackable Test Leads bec01f.eps Figure 1. Standard Equipment Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 16: Symbols

    AC - Alternating current Double insulated DC - Direct current Battery Risk of danger. Important information. See Earth ground Manual. Precedes Warning. Power ON/OFF Pressure Hazardous Voltage. Precedes Warning. Conforms to European Union directives Conforms to Canadian Standards Association directives. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 17: Getting Acquainted With The Calibrator

    3 Seconds OPEN/CLOSE V mA SWITCH LOOP TEST HART V mA FREQ MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Return to Recall Recal bec05f.eps Figure 2. Input/Output Terminals and Connectors Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 18 Terminals for sourcing or measuring voltage, resistance, pulse, frequency, and RTD, Pulse, Hz, Ω terminals RTDs. SOURCE/ MEASURE mA Terminals for sourcing and measuring current and performing 3 W and 4 W RTD G, H terminals, 3W, 4W measurements. HART resistor option in mA mode. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 19: Keys

    FREQ MEAS MEAS SOURCE SOURCE PULSE PULSE EXIT CONFIG EXIT CONFIG CONFIG CONFIG 100% 100% SELECTION SELECTION SAVE SAVE RECALL RECALL ENTER ENTER TRIGGER/STOP TRIGGER/STOP Return to Return to Recal Recallurn to Recal bec41f.eps Figure 3. Keys Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 20 Press and hold to store the source value as the 0 % value. Press and hold when powering up to identify the firmware version. The firmware version is shown in the upper display for about 1 second after initialization. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 21 Selects RTD (resistance temperature detector) measurement and sourcing function in lower display. Repeated pushes cycle through the RTD types. Selects resistance mode. Selects the pressure measurement and sourcing function. Repeated pushes cycle through the different pressure units. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 22: Display

    Figure 4 shows the elements of a typical display. Loop Memory Locations HART Mode Indicator for Calibrator Setups Indicator Low Battery Symbol Units Display Mode Indicator % Error Indicators Auto Ramp bec07f.eps Figure 4. Elements of a Typical Display Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 23: Configuration Menus

    To adjust the contrast (see Figure 5): Press C until Contst Adjust appears on the display. Use X and W to adjust the contrast up and down. Press S to save the setting. bec06f.eps Figure 5. Adjusting the Contrast Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 24: Shut Down Mode

    Press S to save the setting. Celcius and Fahrenheit ( ° C and ° F) Press C until SELECT UNIT °C (or °F) appears on the display. Use X and W to select °C or °F. Press S to save the setting. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 25: Hart  Resistor On/Off

    1 V as the 0 % value. Press to increase the output to 5 V. Press and hold to enter 5 V as the 100 % value. Press to step between 0 and 100 % in 25 % step increments. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 26 Multifunction Process Calibrator Getting Started bec39f.eps Figure 6. Voltage-to-Voltage Test Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 27: Using Measure Mode

    LOOP appears and an internal 24 V loop supply turns on. Note When HART resistor mode is selected, the 250 Ω resistor is turned on both mA channels. bec42f.eps Figure 7. Measuring Voltage and Current Output Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 28 HART V mA FREQ MEAS SOURCE PULSE TEST DC PWR – + – EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER – TRIGGER/STOP Return to Recall HART Communicator Black bec18f.eps Figure 8. Connections for Supplying Loop Power Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 29: Measuring Electrical Parameters (Lower Display)

    3 Seconds OPEN/CLOSE frequency, and Rfor resistance. V mA SWITCH LOOP TEST HART V mA FREQ MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Recal Black bec43f.eps Figure 9. Measuring Electrical Parameters Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 30: Measuring Temperature

    Menus” for more information. Press for the thermocouple display. Continue Attach the thermocouple leads to the appropriate TC pressing this key to select the desired thermocouple miniplug, then to the TC input/output as shown in type. Figure 10. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 31 95 % W + 5 % Re Red or Pink 80 % W + 20 % Re 0 to 2500 *American National Standards Institute (ANSI) device negative lead (L) is always red. **International Electrotechnical Commission (IEC) device negative lead (L) is always white. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 32 Multifunction Process Calibrator Using Measure Mode 30V MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + Process Temperature LOOP mA - Warning 30 V maximum to TC Miniplug bec12f.eps Figure 10. Measuring Temperature with a Thermocouple Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 33: Using Resistance-Temperature Detectors (Rtds)

    PRT Custom Curves Up to three custom curves can be named and CVD coefficients can be entered through the serial port. Names can be up to six characters. For more information, see the Application Note on the 725/726 CD. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 34 The IEC standard RTD commonly used in U.S. industrial applications is the Pt100 (385), α = 0.00385 Ω/°C. Pt100 (3916), α = 0.003916 Ω/°C is also designated as JIS curve. Custom RTDs may also be added, see PRT Custom Curves Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 35 30V MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + LOOP mA - 30V MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + LOOP mA - bec15f.eps Figure 11. Measuring Temperature with an RTD, Measuring 2-, 3-, and 4-Wire Resistance Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 36: Measuring Pressure

    Using Measure Mode Measuring Pressure Many ranges and types of pressure modules are available Gage Differential from Fluke, see “Accessories”. Before using a pressure High module, read its instruction sheet. The modules vary in 700 P 06 700 P 04 PRESSURE MODULE use, media, and accuracy.

  • Page 37: Zeroing With Absolute Pressure Modules

    A for 3 seconds pressing Continue pressing to change pressure display units to psi, mmHg, inHg, cmH O@4 °C, cmH O@20 °C, inH O@4 °C, inH O@20 °C, inH O@60 °F, mbar, bar, kg/cm , or kPa. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 38 3 Seconds OPEN/CLOSE V mA SWITCH LOOP TEST HART V mA FREQ MEAS SOURCE PULSE Differential EXIT CONFIG CONFIG 100% SELECTION Module SAVE RECALL ENTER TRIGGER/STOP Tank Return to Recall bec37f.eps Figure 13. Connections for Measuring Pressure Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 39: Using Source Mode

    To select the current sourcing mode, proceed as follows: Connect the test leads in the mA terminals (left column). If necessary, press for SOURCE mode. Press for current and enter the desired current by pressing X,W, , and Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 40 FREQ MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% +24 V SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Recall Loop Power Black Supply Readout or Controller – bec17f.eps Figure 14. Connections for Simulating a 4- to 20-mA Transmitter Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 41: Sourcing Other Electrical Parameters

    Press to select a different digit to To select an electrical sourcing function, proceed as change. follows: Connect the test leads as shown in Figure 15, depending on the source function. If necessary, press for SOURCE mode. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 42 SOURCE / MEASURE MEASURE + mA mA + LOOP mA - HART – Communicator Black Common 30V MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + LOOP mA - – Black Common bec16f.eps Figure 15. Electrical Sourcing Connections Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 43: Simulating Thermocouples

    TC display. If desired, continue pressing this key to select the desired thermocouple Do not try to force a miniplug into the wrong type. polarization. Enter the temperature you want by pressing keys. Press to select a different digit to edit. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 44 3 Seconds OPEN/CLOSE V mA SWITCH LOOP TEST – HART V mA FREQ MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Recall TC Miniplug bec20f.eps Figure 16. Connections for Simulating a Thermocouple Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 45: Simulating Rtds

    Use the 3W and 4W terminals for measurement only, not for simulation. The Calibrator simulates a 2-wire RTD at its front panel. To connect to a 3-wire or 4-wire transmitter, use the stacking cables to provide the extra wires. See Figure 17. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 46 Multifunction Process Calibrator Using Source Mode SENSOR TERMINALS BLACK bec40f.eps Figure 17. Connections for Simulating 3- and 4-Wire RTD Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 47: Sourcing Pressure

    SOURCE field. Figure 18 shows how to • Never apply more than 10 ft.-lb. (13.5 Nm) connect a pump to a Fluke pressure module which makes of torque between the pressure module it a calibrated source. fittings, or between the fittings and the body of the module.
  • Page 48 If desired, continue pressing to change attached and sets its range accordingly. pressure display units to psi, mmHg, inHg, O@4 °C, cmH O@20 °C, inH O@4 °C, O@20 °C, inH O@60 °C, mbar, bar, kg/cm , or kPa. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 49 OPEN/CLOSE V mA SWITCH LOOP Module TEST HART V mA FREQ To Unit Under Test MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Recall bec47f.eps Figure 18. Connections for Sourcing Pressure Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 50: Setting 0 % And 100 % Output Parameters

    Stepping and ramping apply to all functions except • Manually stepping an output in 25 % pressure, which requires use of an external pressure increments. source. Switch between the 0 and 100 % span points by • momentarily pushing Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 51: Manually Stepping The Ma Output

    Table 7. show SAVE SETUP and SAVE DATA. Push Sto select SAVE SETUP. Push Y or Z to select the desired memory location (at the top of the LCD). Push S to enter the setup. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 52: Recall A Setup

    Use Y and Z to change the data point location (1-8). Push S to store the measurement and return the unit to the measurement mode. Figure 19 shows a reading stored in memory location 3, data point 1. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 53: Recall Data

    Push S. Push Z to choose the desired memory location (top of the display). The data saved in that first memory location now appears. There can be different measurements stored (1-5) for each memory location (1-8). Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 54: Calibrating A Transmitter

    When HART resistor mode is selected, the 250 Ω resistor is turned on both mA channels. Press (lower display). If desired, continue pressing this key to select the desired thermocouple type. Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 55 TEST HART V mA FREQ MEAS SOURCE PULSE TEST DC PWR – + – EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER – TRIGGER/STOP Return to Recall HART Communicator Black bec44f.eps Figure 20. Calibrating a Thermocouple Transmitter Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 56: Calibrating A Pressure Transmitter

    Figure 21. Note Press for current (upper display). If required, When HART resistor mode is selected, the press again to activate loop power. 250 Ω resistor is turned on both mA channels. Press (lower display). Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 57 OPEN/CLOSE V mA SWITCH LOOP Module TEST HART V mA FREQ MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Recall HART Communicator Black bec34f.eps Figure 21. Calibrating a Pressure-to-Current (P/I) Transmitter Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 58: Calibrating An I/P Device

    Enter the desired current by pressing Press to select different digits. Connect the test leads to the instrument under test as shown in Figure 22. The connections simulate a current-to-pressure transmitter and measures the corresponding output pressure. Press (upper display). Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 59 OPEN/CLOSE V mA Module SWITCH LOOP TEST HART V mA FREQ MEAS SOURCE PULSE EXIT CONFIG CONFIG 100% SELECTION SAVE RECALL ENTER TRIGGER/STOP Return to Recall HART Communicator Black bec28f.eps Figure 22. Calibrating a Current-to-Pressure (I/P) Transmitter Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 60: Pressure Switch Test

    Slowly apply pressure with the pump until the switch opens. Note Pressure the device slowly to ensure accurate readings. Run the test several times to confirm repeatability. Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 61: Remote Control Commands

    The Calibrator may be remotely controlled from a PC running a terminal emulator program. The remote control commands give access to all capabilities of the Calibrator with the exception of pressure measurement. See the Fluke Web Site for the 726 Remote Programming application note at  HART Functionality The Calibrator has a user-selectable 250 Ω...

  • Page 62: Maintenance

    To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the battery indicator (M) appears. Figure 24 shows you how to replace the batteries. Battery and Compartment bec38f.eps Figure 24. Replacing the Batteries Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 63: Cleaning The Calibrator

    659026 and replace them if needed. Battery door 1/4-turn 948609 To locate an authorized service center, refer to fasteners “Contacting Fluke” at the beginning of the manual. TL75 series test leads 855742 Test lead, red 688051 Test lead, black 688066...
  • Page 64 Multifunction Process Calibrator Maintenance bec45f.eps Figure 25. Replacement Parts Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 65: Accessories

    Compatibility is listed in Table 9. Pressure Modules and values that are too low to be read if inappropriate units Fluke model numbers are listed in Table 10. Contact your are selected. This is prevented by displaying OL on the Fluke representative about new pressure modules not display per the following table.
  • Page 66 Multifunction Process Calibrator Accessories Table 10. Pressure Modules Fluke Model Number Range Type and Media Fluke-700P00 0 to 1” H differential, dry Fluke-700P01 0 to 10” H differential, dry Fluke-700P02 0 to 1 psi differential, dry Fluke-700P22 0 to 1 psi...
  • Page 67 Users Manual Table 10. Pressure Modules (cont.) Fluke Model Number Range Type and Media Fluke-700P29 0 to 3,000 psi gage, wet Fluke-700P30 0 to 5,000 psi gage, wet Fluke-700P31 0 to 10,000 psi gage, wet Fluke-700PA3 0 to 5 psi...

  • Page 68: Specifications

    0.010 % + 2 µA mA Source 0.000 24.000 Maximum load on, mA source is 1 ke. With the HART resistor on, maximum load is 750 Ω. Voltage input range on simulate mode is 5 to 30 V Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 69: Ohms Measurement

    Frequency response is ≤ 5 mS Frequency Measurement Accuracy Range Minimum Maximum (% of Reading + Floor) CPM Read 1000.0 0.05 % + 0.1 CPM Hz Read 1000.0 0.05 % + 0.1 Hz KHz Read 1.00 15.00 0.05 % + 0.01 KHz Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 70: Frequency Source

    0.50 % Temperature, Thermocouples CJC ON CJC OFF Type Minimum Maximum Accuracy Accuracy -210 1200 -200 1000 1000 1372 -250 -250 -100 -100 1000 1767 CJC error outside of 23 ± 5 °C is 0.05 °C / °C Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 71 (% of Reading + Floor) -10 °C to 75 °C Thermocouple in mV source 0.015 % + 10 µV (% of Reading + Floor) Maximum current output in voltage ranges is 1 mA with an output impedance of ≤ 1 e Fluke-Direct information@ITM.com 1.800.561.8187...

  • Page 72: Rtd Accuracy (Read And Source) (Its-90)

    Notes: Read Accuracy is based on 4-wire input. For 3-wire input, add ± 0.05 e assuming all three RTD leads are matched. Source Accuracy is based on 0.5 to 3.0 mA excitation current (0.1 mA for pt1000 range) Fluke-Direct information@ITM.com...
  • Page 73 5 digits Determined by psi, inH O@4 °C, cmH O@20 °C, bar, pressure module pressure module stores present pressure value cm H as an offset and subtracts it mbar, kg/cm , mmHg, inHg from the displayed value Fluke-Direct information@ITM.com 1.800.561.8187...
  • Page 74 EN50082-1:1992 and EN55022: 1994 Class B Criteria A or B CSA C22.2 No 1010.1:1992 Power requirements 4 AA alkaline batteries Protection Class Pollution Degree II Size 96 x 200 x 47 mm. (3.75 x 7.9 x 1.86 in) Weight 650 gm (1 lb, 7 oz) Fluke-Direct information@ITM.com 1.800.561.8187...

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