Pressure sensors used more widely , to quickly and efficiently select the appropriate pressure sensors

Pressure sensors used more widely , to quickly and efficiently select the appropriate pressure sensor , the need for their application to do a comprehensive understanding of the following is selected pressure sensor to consider when some parameters1, select the type of pressure measurement : There are several types of pressure measurements , absolute pressure , gauge pressure measurements, true gauge pressure measurements, differential pressure measurement . Absolute pressure measurement , refer to the absolute pressure measurements, ie relative to the vacuum pressure measurement . Refers to a gauge pressure measured relative to atmospheric pressure measurement , the actual ambient atmospheric pressure changes , so some seal an atmospheric pressure sensor as a reference , the reference pressure is not sealed with the outside atmospheric pressure changes Therefore, such a seal a constant reference Cooling Temperature Sensor are usually referred to as true form pressure sensor . Differential pressure measurement , refers to the two different media to measure the pressure difference between , two pressure ports it needs to pass different pressure medium 2 , select the appropriate pressure range and overload pressure range, the sensor pressure range is measured by the sensor pressure range , overload pressure is the pressure sensor to ensure proper operation and can withstand the maximum pressure value , the general pressure sensor overvoltage capabilities are in the measurement range of 1.5 times. Pressure sensor range to be higher than the maximum pressure range of applications , but not too high, if you select the higher range of the sensor , the measurement range of the sensor output signal change is smaller, measuring accuracy deteriorates.3 , select the appropriate pressure port, pressure port is to pass the path to the sensor medium pressure , the pressure interface material, usually ceramic , plastic, stainless steel , alloys, etc. , need to pressure medium without corrosive and choose different materials. At the same time the pressure interface also has a different shape , a shape and volume flush film formation , etc. If more viscous pressure medium , is recommended flush membrane interface, it is not likely to cause deposition of the media .4 , select the appropriate electrical connection, electrical interface is a sensor with an external circuit or system data communication channel, which needs to be considered is the sensor type and size of the supply voltage , the output signal type and connection methods. If the sensor is not added to the signal conditioning circuit , the output of Crankshaft Positioning Sensor based on different systems have different output signals, such as a voltage signal in mV , and changes in capacitance or electric signals , then the customer must choose the design of the signal processing circuit , the signal conversion the useful signal can be identified .5 , select the appropriate accuracy , different applications , the requirement of the measurement error is different , but the measurement accuracy is higher, the higher the cost of the sensor is often Therefore applications, not one-sided with high precision .6 , the temperature range selected sensor , the sensor usually changes with temperature drift , in order to achieve high-precision measurement ,Car Temperature Sensor usually have a temperature compensation function , the temperature compensation range , optimum measuring accuracy . In some high-temperature applications , because most of the electronic components can only work at 85 degrees or less , so you can choose not to bring the amplifier circuit temperature sensor will measure the signals from the high temperature zone and then diverted to the low temperature zone for signal processing .In practical applications , the sensor may also need to consider the resolution , the resolution is a pressure sensor to identify the minimum pressure range , with the development of sensor technology , the pressure sensor can identify the smaller , high resolution is required rate applications , the client can be considered without the sensor amplifiers , their choice performance amplifiers , the signal processing to achieve the minimum signal recognition .