Fluke Speaker Rev. 4 Manuel d'utilisateur télécharger pdf (Page 60)

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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 M for SOURCE mode.

3. Press tfor the display that prompts you to

enter thermocouple type.

4. Press the u or d key followed by e to

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 s and 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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Fluke Speaker Rev. 4 Manuel d'utilisateur Page 60