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How To Choose Temperature Sensor
Oct 09, 2017

In most cases, the selection of temperature sensors, you need to consider the following issues:

(1) Whether the temperature of the object being measured requires recording, alarming and automatic control, and whether long-distance measurement and transmission is required.

(2) The size and accuracy of temperature measurement range.

(3) The size of the temperature measuring element is appropriate.

(4) When the temperature of the measured object varies with time, the hysteresis of the temperature measuring element can meet the requirement of temperature measurement.

(5) Whether the environment condition of the tested object is harmful to the temperature measuring element.

(6) Price such as insurance, use is convenient.

The selection of temperature sensors is mainly based on the measurement range. The Platinum Resistance sensor can be used when the measuring range is estimated to be within the total. A narrower range usually requires the sensor to have a fairly high base resistance in order to obtain a sufficiently large resistance change. The resistance changes provided by the thermistor are large enough to make these sensitive components very suitable for narrow range of measurement. Thermocouples are more suitable if the measurement range is quite large. It is best to include the freezing point in this range because the Thermocouple's scale is based on this temperature. Sensor linearity in a known range can also be used as an additional condition for selecting a sensor.


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