NTC Thermistor Temperature Calculator
Calculate temperature from NTC thermistor resistance using the Steinhart-Hart beta equation. Useful for PT100/PT1000 and generic NTC thermistors.
Formula
How It Works
NTC (Negative Temperature Coefficient) thermistors are temperature-sensitive resistors that change resistance predictably with temperature. The Steinhart-Hart equation provides a precise mathematical model for converting resistance measurements to actual temperature values. This advanced thermodynamic relationship allows precise temperature sensing across various applications in electronics, industrial monitoring, and scientific instrumentation.
Worked Example
Problem: Calculate the temperature for an NTC thermistor with R = 4500 Ω, R0 = 5000 Ω, β = 3950 K, at standard reference temperature T0 = 25°C Solution: 1. Apply Steinhart-Hart simplified equation: T = 1 / (1/T0 + (1/β) * ln(R/R0)) 2. Substitute values: 1 / (1/298.15 + (1/3950) * ln(4500/5000)) 3. Calculate intermediate steps 4. Result: Approximately 35°C (308.15 K)
Practical Tips
- ✓Always verify the specific β value for your thermistor model
- ✓Ensure stable measurement conditions for accurate readings
- ✓Use high-precision measurement equipment for best results
Common Mistakes
- ✗Confusing resistance values at different temperatures
- ✗Using incorrect β constant for specific thermistor type
- ✗Neglecting precise calibration of reference resistance R0
Frequently Asked Questions
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