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6.9
Custom RTD
The ASC-400 offers the possibility of entering a custom curve-fit PRT into the calibrator for
sourcing and measuring.
Follow the principle of navigating through the functions described in the guidelines in
section 4.2 and proceed as follows
:
1. Select “Custom” from the RTD Type list. The option is found at the bottom of the list.
2. Press (System) to access the System Settings.
3. Enter the desired values in the Custom RTD setting fields using either the ARROW
keys or the numeric keys and accept the values.
4. Leave the System Settings setup.
5. Attach the custom RTD leads as shown in Figures 11 or 12.
The custom function uses the Calendar-Van Dusen equation for outputting and
measuring custom RTDs.
F3
Figure 12
Using a 3- or 4-wire
Connection for RTDs
3-wire connection
4-wire connection