Rtd (Additional Option) - GE Measurement Sentinel LCT4 User Manual

3.9.5 RTD (Additional Option)

If an option card is installed, an RTD input may be available to the user, depending on the option card ordered. If the
output is available, configure it as follows:
1. Select the appropriate Slot for the Option Card.
2. Select the Temp(RTD) option
3. Enter in a Value for the Label if you want it changed
4. Select Mode and choose Off to turn off the input, or choose Temperature and select the input Temperature
units.
5. Select CAL.
a. Make sure the RTD is connected to the terminal board correctly, according to Figure 35 on page 51.
b. The GE Sensing calibration process involves using a temperature bath and an iRTD (reference).
c. The iRTD is connected to iRTD Win Software to read the values.
d. The Meter is set up to display 1C:RTD.
e. Under IO/Slot 1/1C:Temp(RTD)/Mode choose temperature and enter in the right units.
f. A 2 to 5 point calibration is allowed with Sentinel LCT4.
•
Cal points must be entered with the lowest temperature starting at setpoint #1, and in increasing order to
the highest setpoint.
•
Cal points must be performed over the full range to be measured. Temperatures that are out of the
calibrated range (not on or between the highest and lowest setpoints) will not have calibration information
applied to them and will not be corrected. "Falling off of the cal range," or increasing the temperature
beyond the last setpoint could cause data to be discontinuous.
•
Empty locations in the calibration table should be filled with the value "0".
g. The Setpoint is the actual temperature that you are trying to read.
h. The Offset is the temperature the meter is reading from the probe minus the reference reading.
i. Run all points with the values set to 0, and then fill them in when all cal points are complete.
6. Select Reset Table if you want to reset all Calibration Entries back to 0.
Sentinel™ LCT4 User's Manual
Chapter 3. General Programming
77