Fluke 2180A - Manual (Page 23)

2180A
NOTE
The decimal point and temperature scale
indicator should be ignored during
the following steps, the user must be aware of
the selected range.
excitation M).5 mA). To set up the 2180A as a resistance
measurement device, refer to the following steps and
Figure 2-3.
NOTE
2-30. 100 millivolt Range
1. Install lead wire to the RTD Input Module,
refer to RTD Installation procedures, steps 1-3 (this
section).
2. Set RTD Input Module switches, S1 to position
9 and S2 to AUTO.
3. Replace RTD Input Module and turn 2180A
on.
4. The 2180A is now ready to measure positive
voltages up to +100 mV.
2-31. 1 Volt Range
1. Install lead wire to the RTD Input Module,
refer to RTD Installation procedures, steps 1-3 (this
section).
2. Set RTD Input Module switches, S1 to position
9 and S2 to .1°.
3. Replace RTD Input Module and turn 2180A
on.
4. The 2180A is now ready to measure positive
voltages up to +1V.
2-32. HOW TO MEASURE RESISTANCE
2-33. The 2180A can be used to measure positive
resistances up to 999.9il with 10 mil resolution (RTD
The temperature scale indicator (^Cj'^F)
should be ignored during the following steps.
2-34. Resistance Measurements
1. Install lead wires to the RTD Input Module,
refer to RTD Installation procedure, steps 1-3.
2. Set RTD Input Module switches, S1 to position
8 and S2 to .1°.
3. Connect a known resistance, less than 1 kfl, to
the wires connected to the RTD Input Module, and
use the following steps to compensate for lead
resistance.
4. Replace RTD Input Module and turn 2180A
on.
5. Adjust R2 through the rear panel of the RTD’s
Input Module until the 2180A’s display reads the
same value as the known resistance.
6. Remove the known resistance, the 2180A is
now calibrated and ready to measure positive
resistances up to 999.9il.
NOTE
For measuring resistances of less than 196Ci,
switch S2 on the RTD Input Module should
be set to the A UTO position.
2-7Z2-8