Documenting Process Calibrator HART Mode
Calibrating a Supported HART Transmitter
Calibrating a Supported HART
Transmitter
An “as found” and “as left” transmitter calibration has an easier, more automated process for HART transmitters than for analog transmitters. The calibration procedure is the same as described in the 744 Users Manual, except for how you set up the calibration template, and how you adjust the transmitter.
Note | pe14s.bmp |
If you are starting a calibration procedure from a loaded Task, connect to the HART transmitter first and establish communication before you press Task in analog mode.
The following procedure assumes that you are familiar with using a 740 Series Documenting Process Calibrator to calibrate analog transmitters, and are not running a loaded Task.
1.Make the appropriate measuring, sourcing, and HART interface connections between the calibrator and the transmitter, and press rto establish communication.
2.Press rto switch to analog mode.
3.You are presented with a set of choices for analog mode. Use the uand dkeys to select one of the measure/source choices. This is where you select measure mA (analog output), or measure PV, which does not involve the Output stage of the transmitter. See Figure 3.
4.Press e.
5.Press the As Found softkey.
6.Use the uand dkeys followed by eto select an instrument calibration procedure. You’ll see that the calibration template is preloaded with appropriate data. You can make changes to any item if you wish.
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