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Choose what temperature sensor than that of other types of sensors the content of the need to consider more. First, you must choose the sensor structure, make the sensitive element within the provisions of the measuring time achieve the flow or measured on the surface of the body temperature. In most cases, the selection of temperature sensors, to consider the following issues: (1) whether the temperature of the object under test shall be record, alarm and automatic control, whether to need to distance measurement and transmission. (2) the size of the temperature measurement range and accuracy requirements. (3) temperature measuring element size is appropriate. (4) in the object being measured temperature change over time, the lagging of the temperature measuring device can meet the requirements for temperature measurement. (5) the object under test environment conditions on the temperature measuring components for damage. The choice of the temperature sensor is mainly according to the measurement range. When the measuring range is expected within the total range, can choose platinum resistance sensor. Narrower range usually require sensor must have a very high resistance, in order to get enough resistance change. Thermistor provided enough resistance change makes these sensitive element is very suitable for narrow measuring range. If the measuring range is quite large, thermocouple more applicable. It is best to also include in this range, freezing because of thermocouple indexing table is based on temperature. Known within the scope of the linear sensor also can be used as a selection sensor strings attached. Response time is usually expressed in time constant, it is to choose the sensor another fundamental basis. When you want to monitor temperature storage tank, the time constant is not so important. However, when in use process must measure the temperature, the vibration tube time constant will be the choice determinants of sensors. The dynamic temperature measurement is complicated, it is only through repeated tests, as far as possible close to simulate the condition of the sensor used in frequent, to achieve reasonable approximate sensor dynamic performance. Relevant search: temperature sensors, dongguan dongcheng power sensors, guan city power sensors, south side temperature sensor, temperature sensor in shenzhen, dongguan, capacitor, dongguan power sensors, foshan capacitor |