Fluke Rev. 4 user manual Simulating Thermocouples, 701/702

701/702

Users Manual

Simulating Thermocouples

NOTE

Refer to “Measuring Temperature” earlier in the manual for a table of data relating to thermocouple types supported by the calibrator.

Connect the calibrator TC connector to the instrument under test with thermocouple wireand theappropriate thermocouple mini-connector (polarized thermocouple plug with flat, in-line blades spaced 7.9 mm (0.312 in) center to center). One pin is wider than the other. Do not try to force a miniplug in the wrong polarization. Figure 18 shows this connection. Proceed as follows to simulate a thermocouple:

1.Attach the thermocouple leads to the appropriate TC miniplug, then to the TC jack as Figure 12 shows.

2.If necessary, press Mfor SOURCE mode.

3.Press tfor the display that prompts you to enter thermocouple type.

4.Press the uor dkey followed by eto select the desired thermocouple type.

5.Enter the temperature you want to simulate as prompted by the display and press e.

NOTE

If you use copper wire instead of thermocouple wire, the reference junction is no longer inside the calibrator. The reference junction is moved to the instrument (transmitter, indicator, controller, etc.) input terminals. You must measure this external reference temperature accurately and enter it into the calibrator. Do this by pressing sand setting Ref. Junc. Compensat and Ref. Junc. Temp. After you enter the external reference temperature, the calibrator corrects all voltages to compensate for this new reference junction temperature.

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