What sensor engineering test requirements

Engineering Test sensor What are the requirements ? Sensor like human sensory organs, we can imagine its importance , so that the process of selection of test sensors is very critical.

First, the technical performance requirements of engineering tests on the sensor , Car Temperature Sensor output of the physical object to be measured is converted into an electrical signal surgery performance following requirements: high sensitivity, wide linear range ; quick response , after fishing , drift ; output signal to noise ratio times high ; stability , good repeatability ; good dynamic performance ; loading effect is low.

Followed by the selection principle of the sensor is divided into several, according to the measurement mode selected in engineering test against working conditions, work the measured object , choose different measurement methods . If contact with the non-contact measurement ; destruction and non-destructive measurement ; online and offline measurement. Different measurement methods , the selected Shaft Position Sensor is also different. For non- contact measurement , the choice of capacitive, eddy current non -contact sensor is more appropriate. For non- destructive measurement that is non-destructive testing , use of ultrasonic , acoustic emission sensors, such as more convenient. Choose different measurement requirements according to the requirements of the selected sensor measurement is not the same . Such as eddy current displacement sensors and variable capacitance sensor pole pitch , are non- contact measurement of micro-displacement sensor , although the sensitivity of the former without the latter is high, but the stability of the former better than the latter. Thus , we must consider the selection of the specific measurement requirements . By using the method of election , breed quickly sensing technology developed in recent years , the sensor specifications very numerous. Every year, many new sensor types appear , which provides a lot of convenience for the selection of the sensor. When selected , requires easy to use as possible , even in the installation, commissioning and maintenance. For example , the rotary shaft of the test structure used with the touch sensor needs to use slip rings or telemetry device , and the use of non-contact sensor is more convenient.