NTC
Temperature Sensor
The NTC temperature sensor, when connected to the controller, provides an impedance value that is then converted into a temperature value by the controller.
This series of products includes a variety of models depending on the performance of the system and the field of application. Sensors have different types of sensing elements, different protection levels, cable lengths, operating ranges and mechanical dimensions.
Key parameters of NTC sensors:
①B value, unit: K
Generally in the range of 2000K~6000K, the larger it is, the more sensitive it is to temperature. A large B value is suitable for temperature measurement, temperature compensation, surge suppression and other application scenarios; a small B value is suitable for low temperature measurement, because an excessive B value will lead to excessive resistance at low temperatures, which is not conducive to signal sampling.
②Zero power resistance value R25 in 25℃ environments, unit: Ω
"Zero power" here means not intervening in the circuit loop, or only passing a trace amount of current, and the self-generated heat is not large. The thermistor's own temperature under this "zero power" condition = ambient temperature.
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