Fluke 5502A, Operator'S Manual

Page: 86 / 378

5502A
Operators Manual
4-12
Cable Connections Instructions
Table 4-1 shows the figure names for each type of connection from a UUT to the
Calibrator.
When you calibrate Resistance Temperature Detectors (RTDs) with the three-terminal
connection shown in Figure 4-9, make sure the test leads have with resistances to cancel
errors from lead resistance. This can be done, for example, with three test leads of the
same length and with the same connector styles.
When you calibrate thermocouples, it is especially important to use the correct hookup
wire and miniconnector between the Calibrator front panel TC terminal and the UUT.
You must use the correct thermocouple wire and miniconnectors for 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 miniplugs for the hookup.
To connect the Calibrator to a UUT:
1.
If the Calibrator is turned on, push

to remove the output from the Calibrator
terminals.
2. Select the correct figure from Table 4-1 to make the connections to the UUT.
3. For capacitance outputs, connect the test leads to the UUT to null out stray
capacitance. Put the cables (but do not connect them) to the Calibrator on a
non-conductive surface. Null out the indication on the UUT with “rel,”
“offset,” or “null,” (use the necessary method), and then connect the test leads
to the Calibrator.
Table 4-1. UUT Connections
5502A Output Figure Reference
Resistance
Capacitance
DC Voltage
AC Voltage
DC Current
AC Current
RTD Simulation
Thermocouple Simulation 4-2 Resistance - four-wire compensation
4-3 Resistance - two-wire compensation
4-4 Resistance - compensation off
4-5 Capacitance - two-wire compensation
4-6 Capacitance - compensation off
4-7 DC Voltage/AC Voltage
4-7 DC Voltage/AC Voltage
4-8 DC Current/AC Current
4-8 DC Current/AC Current
4-9 Temperature (RTD)
4-10 Temperature (Thermocouple)
Note:
See the discussion under “Four-Wire versus Two-Wire Connections” above.