Sourcing Ohms/Rtds - Martel MC1210 Reference Manual

4.9 Sourcing Ohms/RTDs

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To source an RTD, follow these steps:
1. Select lower display from the Main Menu, and choose [RTD] from the primary
parameters.
2. Choose output [OUT] from the input/output control, and select RTD type from the sensor
types.
3. Connect the calibrator to the instrument being tested, as in Figure 14.
4. Enter the temperature or resistance using the keypad.
Figure 15. Using a 3- or 4-wire Connection for RTDs
Note: The calibrator simulates a 2-wire RTD. To connect 3- or 4-wire transmitter, use stacking
cables, as shown in Figure 15.
4.9-1 Custom RTD
A custom curve-fit PRT may be entered into the calibrator for sourcing and measuring. To
do so follow these steps:
1. Switch to lower display. Select RTD and set sensor type to CUSTOM.
2. Enter the RTD custom setup main menu, and select [SET CUSTOM].
3. Using the keypad, enter the values that the calibrator prompts for: minimum
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