Fluke 754 User Manual
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Fluke 754 User Manual

Hart mode
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754
HART Mode
Users Guide
July 2011
© 2011 Fluke Corporation. All rights reserved.
All product names are trademarks of their respective companies.

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Summary of Contents for Fluke 754

  • Page 1 HART Mode Users Guide July 2011 © 2011 Fluke Corporation. All rights reserved. All product names are trademarks of their respective companies.
  • Page 2 LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for three years from the date of purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling.

  • Page 3: Table Of Contents

    Table of Contents Title Page Introduction ........................1 How to Contact Fluke ..................... 1 HART Channel Selection ....................2 Connect to a HART Transmitter ..................3 Supported vs. Generic Transmitters................6 Communication Operations.................... 7 See Process Variables ....................9 Setup Operations....................... 9 Basic........................
  • Page 4 Users Guide Analog Mode and HART Mode Interaction ..............12 HART Calibration......................12 HART Mode Menus for Adjustment ................12 Calibrate a Supported HART Transmitter ..............14 Loop Test........................15 Output Trim ....................... 16 Sensor Trim ......................16 Duplicate a Transmitters Basic Information ..............18...

  • Page 5: Introduction

    All of the Product functions shown in the 753/754 Users Manual are available and can be used with supported HART transmitters. The only transmitters addressed in this manual are HART transmitters.

  • Page 6: Hart Channel Selection

    Users Guide HART Channel Selection For HART communication, use the HART connector on the side of the Product or the mA jack on the front of the Product. The procedure you use depends on the application and preference. Use Setup mode to choose the correct HART channel: Push s.

  • Page 7: Connect To A Hart Transmitter

    HART Mode Connect to a HART Transmitter Notes Connect to a HART Transmitter • The Product supplies loop power To connect and start communication with a HART through an internal series resistance of transmitter: Ω Note • If the Product shows a measurement of If only a communication connection to a 0 mA, make sure you have not transmitter that is powered in a loop is...
  • Page 8 Users Guide The Active Device screen supplies this data for all transmitters: • Poll address (if not 0) • Model number and Tag ID • PV (Primary Variable) • PVAO (digital representation of the Analog Output) • PV LRV (PV Lower Range Value) •...
  • Page 9 HART Mode Connect to a HART Transmitter – gks61.eps Figure 3. HART Transmitter Connection...

  • Page 10: Supported Vs. Generic Transmitters

    Users Guide Supported vs. Generic Transmitters The Product communicates with most HART transmitters. “Supported Transmitters” are transmitters in which the Product is programmed to use their device-dependent commands and software version. “Generic transmitters” are transmitters that are not programmed in the Product. Table 1 shows the operations that are available for supported vs. generic transmitters in single-point and multidrop configurations.

  • Page 11: Communication Operations

    HART Mode Communication Operations Note Sensor trim is supplied for supported transmitters, with some exceptions, as identified in the list of supported transmitters that you can see on the display. To show a list of supported transmitters and software versions: •...
  • Page 12 Device HART ID Information · · Alarm state Software revision Sensor trim · · HART poll address Hardware revision · · HART burst mode Number of preambles · HART burst command ABORT gnx03f.eps Figure 5. 754 HART Mode Menu Tree...

  • Page 13: See Process Variables

    HART Mode Communication Operations See Process Variables Setup Operations From the Active Device screen: The Setup softkey gives access to these five setup functions: Push the Process softkey to see more device • variables and their continuously updated values. Basic •...

  • Page 14: Sensor

    Users Guide Sensor Device Identification This is where you can see data about the sensor in the You can program the Tag, Message, Date, and Descriptor transmitter, that includes serial number, limits, and span. registers in the transmitter when you use this screen. The limits shown are the absolute limits for the sensor.

  • Page 15: Hart Output

    HART Mode Communication Operations HART Output From the Active Device screen push the Setup and HART Information softkeys to access the read-only From the HART Output screen you can change the Poll HART Information screen. See Figure 11. Address (0 = single transmitter, any other address = multidrop), and control burst mode.

  • Page 16: Abort Softkey

    Primary Variable (PV) to be Analog mode is usual Product operation, as given in the correct when read by a host computer, you must calibrate 753/754 Users Manual. HART Communication mode the Input stage. starts when r is pushed.
  • Page 17 HART Mode HART Mode Menus for Adjustment DOCUMENTING PROCESS CALIBRATOR Sensor trim Loop test Pressure zero trim Output trim PVAO 4-20 mA Input Output Computation Physical loop variable HART transmitter gnx02f.eps Figure 12. Block Diagram of a HART Transmitter...

  • Page 18: Calibrate A Supported Hart Transmitter

    An “as found” and “as left” transmitter calibration has an easier, more automated procedure for HART transmitters than for analog transmitters. The calibration procedure is the same as given in the 753/754 Users Manual. How to set up the calibration template, and how you adjust the transmitter are different.

  • Page 19: Loop Test

    HART Mode Calibrate a Supported HART Transmitter To do a Loop Test: 10. Do an Output Trim, and/or a Sensor Trim. These are Service operations. See “Output Trim” and “Service From the Active Device screen, push the Service Trim”. When you are done with the trim procedures, softkey, followed by Loop Test.

  • Page 20: Output Trim

    Users Guide Output Trim Sensor Trim An Output Trim adjusts the transmitter’s Output block. You can only do a Sensor Trim on a supported You can do an Output Trim on generic and supported transmitter. A Sensor Trim adjusts the Input block of a transmitters.
  • Page 21 . In the case of a pressure transmitter (as above), push Fetch to put the value Follow the instructions on the display. For pressure, that is measured by the Fluke pressure module into there is a message to connect a pressure module to the dialog box.

  • Page 22: Duplicate A Transmitters Basic Information

    Users Guide Duplicate a Transmitters Basic Push the Store Page softkey to put the settings into Product memory (not the transmitter). Information Disconnect the Product from the transmitter and The Product lets you duplicate the Basic Setup data from connect it to the transmitter that you will configure. one transmitter to a different transmitter.

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