Watlow D4T Data Logger
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Chapter 5 Function Reference
Thermistor Curve
Setting
Resistance @
25°C
Alpha
Technics
Measurement Specialties
(BetaTHERM)
YSI
Curve A
2,252 Ω
Curve A
2.2K3A
004
Curve B
10,000 Ω
Curve A
10K3A
016
Curve C
10,000 Ω
Curve C
10K4A
006
Custom
Use Steinhart-Hart equation coefficients (A, B and C) from thermis-
tor manufacturer corresponding to the terms of the Steinhart-Hart
equation:
Name
Uniquely identify this FB using up to 20 alphanumeric characters.
Thermistor Curve
Set the curve for the thermistor used.
Options:
Custom, Curve A, Curve B, Curve C
Coefficient A
Enter the custom resistance coefficient for the thermistor.
Range: -3.4000000E039 to 3.4000000E038
Coefficient B
Enter the custom resistance coefficient for the thermistor.
Range: -3.4000000E039 to 3.4000000E038
Coefficient C
Enter the custom resistance coefficient for the thermistor.
Range: -3.4000000E039 to 3.4000000E038
Resistance Range
Set the maximum resistance to be measured by the thermistor input. Higher settings yield a
wider range with less precision.
Range: 5K, 10K, 20K, 40K
Display Precision
Set how many decimal places are displayed for the process value and associated parameters
such as set points.
Options:
Whole, Tenths, Hundredths, Thousandths