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Calibration and Offset Adjustment
9
Calibration and Offset Adjustment
Calibration consists of two parts:
1. Calibration of the A/D converter, using the set up shown in Figure 3.
2. Reference junction calibration, using the ice bath test set up shown in Figure 2.
A/D Calibration
To calibrate the A/D portion of the thermometer, follow these steps:
1. Connect the calibrator to the T1 input of the thermometer using copper (non-
thermocouple) wire and a copper thermocouple connector. Refer to Figure 3 for
proper equipment connections.
2. Turn the thermometer on, with a small, blunt probe, press the calibration button
located on the back and in the center of the thermometer. Refer to Figure 4.
5700A
Calibrator
51, 52, 53, or 54
Series II
Thermometer
Copper
wire
Copper
Thermocouple
connector
+
-
_
- +
zb06f.eps
Figure 3. Calibration Connections