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Using Input Mode
In Input mode, the Calibrator measures resistance, and temperature from RTD and
thermocouple sensors and displays pressure measurements from Fluke 700 and
525A-P series pressure modules.
The figures in this chapter show how to connect to a Fluke 725
Multifunction Process Calibrator. For other instruments, refer to
their users manual for connection instructions.
Measuring Resistance
The Calibrator will only measure resistance using a 4-wire system. The Input
terminals supply a fixed DC current and the Sense terminals measure the voltage.
When you connect to a 4-wire calibrator, connect the Input to the output terminals
and the Sense to the sense terminals for proper measurement.
To measure resistance using a 4-wire to 2-wire connection:
1. Connect the Calibrator to the instrument you want to test as shown in
Figure 3-1.
2. If necessary, press to select RTD mode.
3. Press to select an ohms range (400 or 4000 ohms).
4. If necessary, press for RTD IN mode.
Using Input Mode
Note
Chapter 3
3-1
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