Fluke 725Ex - Using Resistance-Temperature Detectors (RTDs)

Using Measure Mode
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Using Resistance-Temperature Detectors (RTDs)
The Calibrator accepts RTD types shown in Table 6. RTDs
are characterized by their resistance at 0 °C (32 °F), which
is called the “ice point” or R
0
. The most common R
0
is 100
Ω. The Calibrator accepts RTD measurement inputs in
two-, three-, or four-wire connections, with the
three-wire connection the most common. A four-wire
configuration provides the highest measurement precision,
and two-wire provides the lowest measurement precision.
To measure temperature using an RTD input, proceed as
follows:
1. If necessary, press M for MEASURE mode.
2. Press
R for the RTD display. If desired, continue
pressing this key to select the desired RTD type.
3. Press
X or W to select a 2-, 3-, or 4- wire
connection.
4. Attach the RTD to input terminals as shown in
Figure 11.
5. If necessary, toggle between °C or °F temperature
units by pressing
D.