Fluke 744 - Manuals

v List of Figures Figure Title Page 1. Connecting to a HART Transmitter ........................................................................................ 5 2. 744 HART Mode Menu Tree .................................................................................................. 9 3. Block ...

1 Documenting Process Calibrator HART Mode Introduction w Warning To avoid electric shock, read the SafetyInformation in the 744 Users Manual before you use the Fluke 744 Documenting ProcessCalibrator. With analog transmitters, you must make a hardwareadjustment during calibration. With HART  (High...

744HART Mode Users Guide 2 How to Contact Fluke To contact Fluke, call: USA and Canada:1-888-99-FLUKE (1-888-993-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65- * -276-6196 Anywhere in the world: +1-425-356-5500 Or visit us on the World Wide Web: www.fluke.com

Documenting Process Calibrator HART Mode Connecting to a HART Transmitter 3 Connecting to a HART Transmitter To connect to and begin to communicate with a HARTtransmitter, refer to Figure 1 and proceed as follows: Note If you only want a communication connection toa transmitter that is powered in a ...

Documenting Process Calibrator HART Mode Connecting to a HART Transmitter 5 RTD Transmitter -PS +PS M -IN +IN S Z 7 8 9 4 5 6 1 2 3 0 . V MEAS SOURCE SETUP mA V Hz TC RTD CLEAR ( ZERO) ENTER TC mA mA V V RTD RTD SOURCE 300V MAX 30V MAX 30V MAX 30V MAX MEAS C A T DOCUMENTING PROCESS CALIBRATOR 744 pe...

744HART Mode Users Guide 6 Supported vs. Generic Transmitters The calibrator communicates with virtually all HARTtransmitters. In addition, the calibrator is programmed touse device-dependent commands for a selection of HARTtransmitters and their software versions. These are“supported transmitters.”...

744HART Mode Users Guide 8 Communication Operations Figure 2 shows the HART Mode menu tree. Availability ofsome elements in the menus depends on whichtransmitter you are using, and whether the transmitter isconfigured by itself on a current loop or in a multidropconnection. Viewing Process Variables...

Documenting Process Calibrator HART Mode Communication Operations 9 • Write protect • Alarm state • HART poll address• HART burst mode• HART burst command • Manufacturer• Model • Device HART ID • Software revision • Hardware revision • Number of preambles • Software version • Final assembly number• ...

744HART Mode Users Guide 10 Sensor From the Active Device screen press the Setup and Sensor softkeys to access the read-only Sensor Setup screen. This is where you can view information about thesensor in the transmitter, including serial number, limits,and span. The limits shown are the absolute lim...

Documenting Process Calibrator HART Mode Communication Operations 11 HART Output From the Active Device screen press the Setup and HART Output softkeys to access the read/write HART Output screen. Here you can change the Poll Address (0 = singletransmitter, any other address = multidrop), and contro...

744HART Mode Users Guide 12 Service Operations The Service softkey provides access to Loop Test, Pressure Zero Trim (where applicable), Output Trim, andSensor Trim operations. For generic transmitters, onlyLoop Test, Output Trim, and Pressure Zero Trim areavailable. (See Table 1.) The trim (adjustme...

Documenting Process Calibrator HART Mode Understanding HART Calibration 13 Understanding HART Calibration An analog transmitter has one stage of electricalconversion from a measured physical parameter to a4-20 mA current loop output. A HART transmitter has thethree stages shown in Figure 3. Dependin...

744HART Mode Users Guide 14 HART transmitter Computation Input Physical variable 4-20mAloop Sensor trim Pressure zero trim Loop testOutput trim Output PV PVAO 744 Calibrator pe02f.eps Figure 3. Block Diagram of a HART Transmitter

744HART Mode Users Guide 16 7. Proceed with calibration as usual (described in the 744 Users Manual). 8. Press the Adjust softkey. This returns you to HART mode, and presents you with the Service menu for thetransmitter. 9. Do an Output Trim, a Sensor Trim, or both. These are Service Operations, and...

Documenting Process Calibrator HART Mode Calibrating a Supported HART Transmitter 17 Output Trim An Output Trim adjusts the tranmitter’s Output stage. Youcan perform an Output Trim on both generic andsupported transmitters. To perform an Output Trim: 1. From the Active Device screen Press the Servic...

Documenting Process Calibrator HART Mode Cloning a Transmitter 19 Cloning a Transmitter Cloning copies the Basic Setup information from onetransmitter to another. You can clone generic andsupported transmitters. To use the calibrator to clone a transmitter: 1. Connect the calibrator to the transmitt...

21 Index —A— abort, 12active device screen, 4analog mode, 12as found, 15as left, 15 —B— basic setup, 8browser screen, 6 —C— calibrating a HART transmitter, 15cloning, 19communication test leads, 3 —D— device identification, 10 —E— external series resistor, 3 —G— generic transmitters, 6 —H— HART info...