How does a NTC thermistor vary with temperature?
With an NTC thermistor, when the temperature increases, resistance decreases. Conversely, when temperature decreases, resistance increases.
What is the temperature of the thermistor?
Thermistors are highly accurate (ranging from ± 0.05°C to ± 1.5°C), but only over a limited temperature range that is within about 50°C of a base temperature. The working temperature range for most thermistors is between 0°C and 100°C.
How does NTC temperature sensor work?
NTC Sensors are a semiconductor ceramic made with various metal oxides. Their electrical resistance decreases with increasing temperature. This resistance is processed by an electronic circuit to provide temperature measurement.
What does NTC thermistor stand for?
Negative Temperature Coefficient Thermistor
A Negative Temperature Coefficient Thermistor (or NTC Thermistor) is the most common type of thermistor. They are one of many numerous types of highly sensitive temperature sensor and are often small in size. A negative temperature coefficient thermistor alters its resistance characteristics with temperature.
What is NTC approved?
Philippines’s Radio Type Approval consists of certification by the NTC (Philippines’ National Telecommunications Commission). The NTC is the government agency responsible for the supervision, adjudication, and control over telecommunications products and services all over the Philippines.
What is an NTC thermistor?
What are NTC Thermistors? NTC stands for “Negative Temperature Coefficient”. NTC thermistors are resistors with a negative temperature coefficient, which means that the resistance decreases with increasing temperature.
What is the maximum temperature a thermistor can withstand?
Most NTC thermistors are typically suitable for use within a temperature range between −55 and 200 °C, where they give their most precise readings. There are special families of NTC thermistors that can be used at temperatures approaching absolute zero (-273.15 °C) as well as those specifically designed for use above 150 °C.
What are the typical sizes of NTC resistors?
The typical sizes range from 0.075 – 5 mm in diameter. These NTC thermistors have metalized surface contacts. They are larger and, as a result, have slower reaction times than bead type NTC resistors. However, because of their size, they have a higher dissipation constant (power required to raise their temperature by 1 °C).
What are NTC temperature sensors?
These are NTC temperature sensors sealed in an airtight glass bubble. They are designed for use with temperatures above 150 °C, or for printed circuit board mounting, where ruggedness is a must. Encapsulating a thermistor in glass improves the stability of the sensor and protects the sensor from the environment.