Thermistor sensors are available in two types: Negative Temperature Coefficients (NTC thermistors) and Positive Temperature Coefficients (PTC thermistors).
What is a thermistor? A thermistor is a temperature-sensitive resistor used for accurate temperature measurement and monitoring. Thermistor sensors are widely used in applications where reliable and cost-effective temperature measurement is required.
Thermistors are available in two types: Negative Temperature Coefficients (NTC thermistors) and Positive Temperature Coefficients (PTC thermistors). NTC thermistors’ resistance decreases as their temperature increases, while PTC thermistors’ resistance increases as their temperature increases. NTC’s are the most commonly used in temperature measurement.
Thermistor characteristics are defined based on the composition of materials with known resistance. As the temperature increases, an NTC thermistor’s resistance will decrease in a non-linear fashion, following a particular “curve.”
The shape of this resistance vs. temperature curve is determined by the properties of the materials that make up the thermistor. Thermistors are accurate to approximately ± 0.2°C within their specified temperature range. They’re generally durable, long-lasting, and inexpensive. They are typically epoxy coated to provide the optimum performance in heavy duty environments. Thermistors and especially NTC’s are mainly applied in a temperature range from -50°C to +150°C with typical resistance values between 2,000Ω and 10,000Ω.
In Senmatic NTC thermistors are primarily used for low temperature applications within the refrigerated cargo industry, also known as reefer containers.
These sensor thermistors are either used to measure and monitor the refrigeration unit or as a cargo temperature probe, commonly known as USDA probes.
With more than 45 years of experience in sensor technology, Senmatic delivers high-precision, tailor-made thermistor sensors developed and tested to meet demanding industry requirements. Our in-house testing and calibration facilities help ensure reliable performance and consistent quality.
For further information contact Max Jensen, Global Sales Director, on +45 6389 2223 or maj@senmatic.com.
For further information contact Max Jensen, Global Sales Director, 0n+45 6389 2223 or maj@senmatic.com.
Contact a Senmatic specialist to get customized guidance for sensors.
