Fluke 5502A, Operator'S Manual

Page: 111 / 378

Front-Panel Operation
Set Output
4
4-37
Set Temperature Simulation (Thermocouple)
Note
Thermocouples have no electrical isolation. Make sure the thermocouple
wire and plug are not changed by extraneous temperature sources. For
example, do not put your fingers on the thermocouple plug or wire when
you simulate a temperature.
Thermocouples generate a small dc voltage at specific temperatures. The simulated
output is a small dc voltage that comes from the selected temperature and type of
thermocouple that is simulated. To toggle the temperature reference between the 1968
International Provisional Temperature Standard (ipts-68) and the 1990 International
Temperature Standard (its-90), see “Use the Instrument Setup Menu.”
Complete the subsequent procedure to set a simulated thermocouple temperature output
at the Calibrator front panel TC connector. If you make an entry error, push

to clear
the display, then enter the value again.
1.
Push

to clear any output from the Calibrator.
2. Connect the UUT as in the “Connect the Calibrator to a UUT” section of this chapter.
Note
You must use thermocouple wire and miniconnectors that agree with the
type of thermocouple. For example, if you simulate a temperature output
for a type-K thermocouple, use type-K thermocouple wire and type-K
miniconnectors.
3. Set the UUT to measure temperature on the necessary range.
4. Push the numeric keys and decimal point key to record the necessary temperature
output (maximum six numeric keys). For example, 123.456.
5. For an output in
°
C, push

. For an output in
°
F, push and then

.
6. The Control Display shows the amplitude of your temperature output. For example,
123.456
°
C (see below).
nn102f.eps
7. Push

. The Calibrator erases your entry from the Control Display and copies
it into the Output Display (below is typical).
nn103f.eps