Calibration- Thermistor Type
Equipment List
∙4 ½ digit voltmeter
∙Precision decade box:
Resolution, 0.01 ohm ; accuracy ±0.02%
∙Ice Bath, 0.00 °C ± 0.05°C
∙Electro Scientific Industries
a.Turn the indicator ON by pressing the °C key.
b.Remove the bottom case of the indicator.
c.Connect a precision resistance box to the terminals on the phone input jack; set the resistance box to 7,280 ohms.
d.Connect the DVM LO lead to “GND”, on the indicator printed circuit board.
e.Using HI lead of DVM, measure voltage
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