What Are The Techniques For Selecting A Temperature Sensor?

What are the techniques for selecting a Temperature Sensor?
Temperature Sensors are used in different areas. There are many kinds of Temperature Sensors. They are used to monitor the temperature of equipment in various environments, such as food production, medical, industrial production and so on. The Temperature Sensor performance has also been improved. For example, to make reliable temperature measurements, you need to select the correct Temperature Sensor. Temperature Sensor manufacturers to select the Temperature Sensor has the following points
A: Frequency response characteristics
1, the Temperature Sensor frequency response characteristics determine the frequency range to be measured, must be within the allowable frequency range to maintain the distortion of the measurement conditions, in fact, the Temperature Sensor response always - the delay, the delay time is expected to be better
2, the Temperature Sensor frequency response is high, the measured signal frequency range is wide, and due to the structural characteristics of the impact of mechanical system inertia, because the frequency of low Temperature Sensor can measure the signal frequency is low
3, in the dynamic measurement, should be based on the characteristics of the signal (steady state, transient, random, etc.) response characteristics, so as to avoid over-error
Second: According to the measurement object and measurement environment to determine the type of Temperature Sensor
To carry out a specific measurement work, we must first consider the principle of the use of Temperature Sensors, which need to analyze a wide range of factors to determine. Because, even if the measurement of the same physical quantity, there are a variety of principles of Temperature Sensors available, which principle of the Temperature Sensor is more appropriate, you need to be measured according to the characteristics and Temperature Sensor conditions to consider the following specific issues: range The temperature of the sensor, the domestic or the import, the price can afford, or whether the price of the Temperature Sensor, the location of the Temperature Sensor, the location of the Temperature Sensor Developed
Three: the choice of sensitivity
1, usually, in the linear range of the Temperature Sensor, it is desirable that the sensitivity of the Temperature Sensor is as high as possible. Because only the high sensitivity, and measured changes corresponding to the output signal value is relatively large, is conducive to signal processing. However, it is important to note that the sensitivity of the Temperature Sensor is high and the external noise independent of the measurement is also easily mixed, and the amplification system is enlarged and the measurement accuracy is affected. Therefore, the requirements of the Temperature Sensor itself should have a high signal to noise ratio, the reduction of the introduction from the outside of the plant disturbance signal
2, the sensitivity of the Temperature Sensor is directional. When the measurement is a single vector, and its direction requirements are high, you should choose other directions of the sensitivity of the small Temperature Sensor; if the measurement is multidimensional vector, the requirements of the Temperature Sensor cross sensitivity is better
Four: precision
Accuracy is an important performance index of Temperature Sensors, it is related to the measurement accuracy of the entire measurement system is an important part. The higher the accuracy of the Temperature Sensor, the more expensive the price, therefore, the accuracy of the Temperature Sensor as long as the accuracy of the entire measurement system can meet the requirements, do not have to choose too high. So that you can choose the same measurement purposes in a number of Temperature Sensors to choose cheaper and simple Temperature Sensor
If the purpose of the measurement is qualitative analysis, the use of high precision repeatability of the Temperature Sensor can not choose the absolute value of the high precision; if it is for quantitative analysis, must obtain accurate measurement values, you need to use the accuracy level to meet the required Temperature Sensor