Are thermistors precise?

Accuracy: NTC thermistors are highly accurate through incremental changes within their operating range. Small temperature changes reflect accurately due to large changes in resistance per °C.

What are the two types of thermistors?

There are two types of thermistors: Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC). With an NTC thermistor, when the temperature increases, resistance decreases. Conversely, when temperature decreases, resistance increases.

What is the difference between PTC and NTC thermistor?

The NTC thermistor provides variable resistance based on temperature. For an NTC thermistor, as temperature increases, resistance decreases. For a PTC thermistor as temperature increases, resistance increases.

How accurate are NTC thermistors?

Of the basic sensor types, an NTC thermistor’s ability to achieve the highest accuracy is within the -50°C to 150°C range, and up to 250°C for glass encapsulated thermistors. Accuracy ranges from 0.05°C to 1.00°C.

Are all 10k thermistors the same?

There are no industry or governmental standards for thermistors. There are at least 5 different temperature versus resistance curves for 10K thermistors in the HVAC/R world. All the thermistors have 10,000 Ohms of resistance at 77°F or 25°C, but they vary greatly the further you get away from 77°F.

How do I know thermistor type?

To determine whether the sensor is a thermistor or RTD, as well as the type, you must measure the resistance between the two different-coloured wires: An RTD PT100 will have a resistance of 100 ohms at 0 °C. An RTD PT1000 will have a resistance of 1,000 ohms at 0 °C.

Do thermistors have high stability?

Thermistors are considered stable at and below room temperature, but as exposure temperature goes up, drifting will occur. Temperature cycling primarily affects stability through high-temperature cycles. A glass-coated bead thermistor can match and exceed stability.

What is a 100K thermistor?

100K Ohm NTC Thermistor This Negative Temperature Coefficient (NTC) Thermistor varies in resistance according to temperature. It is a simple way to measure air temperature or the temperature of an adjacent device or surface. The resistance is 100K Ohms at 30°C and decreases as temperature increases.