3.3-2 Using Resistance-Temperature-Detectors (RTDs)
The supported types of RTDs are shown in Section 8. Specifications.
RTDs are characterized by their 0°C resistance, R0. The calibrator
accepts two, three, and four wire inputs, with four wire input being the
most accurate.
To use the RTD option, apply the following steps:
1. Switch to lower display [LOWER] from Main Menu.
2. Select RTD from the primary parameters. Select [IN] from
input/output control.
3. Choose 2, 3, or 4-wire connection [2W, 3W, 4W]. (4-wire allows for
the most precise measurement)
4. Select RTD type from the sensor types.
5. Attach RTD leads as shown in Figure 8.
Figure 8. Measuring Temperature with RTD Connection
Resistance can also be measured using this function. To do so, use the
above procedure and choose OHMS from the sensor types. This option
can be used along with a table to measure an RTD which is not
programmed into the calibrator.
3.4 Measuring Pressure
Note: Pressure is not read from modules with frequency or pulse train
mode enabled.
Warning!
To avoid a violent release of pressure in a pressurized system, shut off the
valve and slowly bleed off the pressure before you attach the pressure
module to the pressure line.
14
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