Thermocouple Simulation - Fluke 753 User Manual

Thermocouple Simulation

Note
See "Temperature Measurement" for a table of
thermocouple types that are supported by the
Product.
Connect the Product TC input/output to the instrument
under test with thermocouple wire and the correct
thermocouple mini-connector (polarized thermocouple plug
with flat, in-line blades spaced 7.9 mm (0.312 in) center to
center).
 Caution
To prevent possible damage to the Product, do
not try to force a miniplug in the wrong
polarization. One pin is wider than the other.
Figure 19 shows this connection. To simulate a
thermocouple:
1. Attach the thermocouple leads to the correct TC
miniplug, and then to the TC input/output. See Figure
15.
2. If necessary, push  for SOURCE mode.
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3. Push t, and then push  to select the TC sensor
type. The display asks you to select the thermocouple
type.
4. Push  or  followed by  to select the necessary
thermocouple type.
5. Push  or  followed by  to select Linear T
(default), or Linear mV, (to calibrate a temperature
transmitter that responds linearly to millivolt inputs).
6. Record the temperature to simulate as prompted by the
display and push .
If you use copper wire instead of thermocouple
wire, the reference junction is no longer inside the
Product. The reference junction moves to the
instrument (transmitter, indicator, controller, etc.)
input terminals. The external reference
temperature must be measured accurately and
recorded into the Product. To do this, push 
and set Ref. Junc. Compensat. and Ref. Junc.
Temp.. After you record the external reference
temperature, the Product corrects all voltages to
adjust for this new reference junction temperature.
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Note
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