© Isothermal Technology
Page 44 of 102
923 milliK manual - issue: 1.10
Use the
←
←
←
←
→
→
→
→
keys to toggle ‘Deviation / Calibration function’ between “Coefficients” and
“Data Pairs”. Press the
↵
↵
↵
↵
key to open a soft keypad and enter the required data.
If you are entering Data Pairs, use the
←
←
←
←
→
→
→
→
keys to select either the ‘Temperature / °C’ or
‘EMF / mV’ boxes at the top of the screen and press the
↵
↵
↵
↵
key to open a soft keypad and
enter the value. To delete a data point, use the
↑
↑
↑
↑
↓
↓
↓
↓
keys to select the point and press the
Delete
(F2) key. The “0 , 0.000” point is fixed and cannot be deleted:
Do not use the thermocouple outside the temperature range defined by the data pairs as errors
may be more than those declared in the calibration certificate.
3.9.6 Using a Thermistor with the Steinhart-Hart Polynomial
The resistance-temperature characteristics of a thermistor are highly non-linear (essentially
logarithmic). The Steinhart-Hart equation is commonly used to convert the measured
resistance to temperature. The three coefficients (A,B,C) used in the equation should be
