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© National Instruments Corporation 9 SCC-TC Series Thermocouple Input Modules User Guide
Calibrating System Offsets
To calibrate the offset voltage of the SCC-TC0X in the system using the
E/M Series DAQ device, complete the following steps. The E/M Series
DAQ device must be powered for 30 minutes before you calibrate the offset
voltage.
1. Select the desired channel and gain on the E/M Series DAQ device.
2. Short the inputs on the SCC-TC0X screw terminals or miniplug.
3. While acquiring data on the selected channel, use a screwdriver to
adjust the potentiometer protruding through the top of the module until
you read 0 VDC.
Calibrating the SCC-TC0X Using a Thermocouple
Calibrator
To calibrate the system using a thermocouple calibrator, complete the
following steps:
1. Make sure that the thermocouple connections at both the SCC and the
thermocouple calibrator are at the same temperature.
2. Connect the thermocouple calibrator to the SCC-TC0X. For best
results, use thermocouple wire of the same length and type that you
use in the thermocouple.
3. Set the thermocouple calibrator to the required calibration
temperature.
4. Measure the calibrator voltage using the SCC-TC0X.
5. Convert the measured calibrator voltage to a temperature measurement
as described in the Scaling Voltage Measurements section.
6. Adjust the potentiometer on the top of the SCC-TC0X so that the
measured temperature is equal to the calibration temperature.