MiscEl: Thermo sensors

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This page has specifications on many standard thermo sensors and when provided with the specifications can do calculations on more types.

Sensors supported

Input values

The input values will depend on the selected sensor type.
TemperatureConvert a temperature to sensor output value
Value: Resistance/EMF/VoltageConvert from a sensor output value to temperature
Curve: Min temp.Limit the range for the curve, when this field is empty a default value is used
Curve: Max temp.Limit the range for the curve, when this field is empty a default value is used
Alpha etc: R (0 °C)Resistance of sensor at 0 °C
Alpha etc: Alpha/Delta/BetaParameters for a PT sensor, use Default button to fill in value for PT100
ABC: R (0 °C)Resistance of sensor at 0 °C
ABC: A/B/CParameters for a PT sensor, use Default button to fill in value for PT100
Measurements: R (0 °C)Resistance of sensor at 0 °C
Measurements: R (100 °C)Resistance of sensor at 100 °C, use Default button to fill in value for PT100
Measurements: R (260 °C)Resistance of sensor at 260 °C, use Default button to fill in value for PT100
B(eta): R (25 °C)The specified resistance of the NTC
B(eta): BetaThe specified beta of the NTC
B(eta): Tol (%)Specified tolerance for resistance and beta
Tempco: R (25 °C)The specified resistance of the NTC
Tempco: Tempco (%/K)The specified temperature coefficient of the NTC
Measurements: R1 at tempFirst measured checkpoint
Measurements: R2 at tempSecond measured checkpoint
Divider input voltageSupply voltage to the divider
Divider resistorResistor used in the divider.
Initial resistanceInitial resistance of the copper wire
Initial temperatureInitial temperature of the copper wire

Output values

ResistanceResistance of sensor at specified temperature
EMFVoltage at specified temperature
VoltageVoltage at specified temperature
DeltaSlope on curve, specified in multiple ways
Temperature rangeTemperature range for this kind of sensor, a actual sensor might be more limited
Resistance rangeResistance change from min. to max. temperature
EMF rangeVoltage change within specied temperature range
StandardsWhat standards are used for this kind of sensors
Class ATolerance according to standard class A specificactions at specified temperature
Class BTolerance according to standard class B specificactions at specified temperature
Callendar-Van Dusen constantsConstants used to specify a PT sensor curve with
Reference junction 0 °C with ITS-90 calibrationA reminder that output from all "Type ?" thermo sensors are relative to 0 °C


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