RTD Linear Resistance
Estimate RTD resistance with R=R₀[1+α(T−T₀)] over a limited temperature range. For precision platinum RTDs over wider ranges, use Callendar–Van Dusen coefficients instead.
Description
Estimate RTD resistance with R=R₀[1+α(T−T₀)] over a limited temperature range. For precision platinum RTDs over wider ranges, use Callendar–Van Dusen coefficients instead.
RTD Linear Resistance: Estimate RTD resistance with R=R₀[1+α(T−T₀)] over a limited temperature range. For precision platinum RTDs over wider ranges, use Callendar–Van Dusen coefficients instead.
When to use RTD Linear Resistance
Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.
- Resistance at reference (Ω)
- Required number input.
- Target temperature (°C)
- Required number input.
- Reference temperature (°C)
- Required number input.
- Linear coefficient (1/°C)
- Required number input.
How RTD Linear Resistance works
Estimate RTD resistance with R=R₀[1+α(T−T₀)] over a limited temperature range. For precision platinum RTDs over wider ranges, use Callendar–Van Dusen coefficients instead. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Resistance ohm
- The resulting resistance ohm returned as a number.
Limitations and assumptions
- RTD and temperature-sensor calculations depend on sensor curve, reference resistance, wiring method, excitation, self-heating, lead resistance, calibration, temperature range, and interpolation standard. Thermocouple voltage additionally requires alloy type and cold-junction compensation.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.
References
-
Resistance thermometer — Wikipedia contributors
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