Fluke Rev. 4 user manual Calibrating a Process Instrument, Generating As Found Test Data

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Users Manual

Calibrating a Process Instrument

When the calibrator is in simultaneous MEASURE/SOURCE mode, a built-in calibration routine is activated when you press the As Found softkey. (As Found data are the test results showing the condition of a transmitter before it is calibrated.) Additionally, Model 702 runs procedures developed using PMLink software. To use procedures from PMLink software, see the PMLink manual.

Generating “As Found” Test Data

The following example shows how to generate as found data for a thermocouple temperature transmitter. In this case the calibrator is simulating the output of a thermocouple and measuring the resulting current from the transmitter. Other transmitters use this same method. Just go back to MEASUREMENT or SOURCE mode and change the operating parameters before you press As Found.

1.Connect the test leads to the instrument under test as shown in Figure 21. The connections simulate a thermocouple and measure the corresponding output current.

2.If necessary, press Mfor MEASURE mode.

3.Press M.

4.Press Mfor SOURCE mode.

5.Press t.

6.Use the uand dkeys to select the thermocouple type, then press e.

7.Enter a source value, for example 100°, then e.

8.Press Mfor MEASURE/SOURCE mode. The display changes as follows:

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