Pressure sensor is applied in a lot of bad border, some bad condition may be bad, such as pressure sensors need to be used to measure the impact pressure, impact pressure measuring general requirements pressure sensor performance is higher, we usually have the following several methods to measure impact pressure.

The first method is to change the pressure transmitter chip, need not ordinary ceramic core body or diffused silicon core body, and using strain gauge, the resistance strain gauge is a thing to be tested on the strain change into an electrical signal sensitive device. It is one of the main part of resistance strain sensor. Resistance strain gauge used mostly metal resistance strain gauge and semiconductor strain gauge. Metal resistance strain gauge and filamentous strain gauge and metal foil strain gauge. Usually will strain gauge through the special adhesive agent and adhesive on the produce mechanical strain matrix, when the matrix stress when the stress changes, the resistance strain gauge also together to produce deformation, which changes the resistance strain gauge, to make the change on the resistance of voltage. This strain gauge in force when the resistance changes usually smaller, general this kind of strain gauge of strain bridge, and through the subsequent instrumentation amplifier amplification, then transferred to the processing circuit. Strain gauge pressure sensor can impact resistant and impact resistant is better, but this kind of sensor precision with indeed.

The second method is using ordinary ceramic pressure sensor or diffused silicon pressure sensor to measure, but is not directly measured, and add a buffer tube in front, so also can measure the impact pressure. This method is economical, convenient installation, so the application is very extensive.

No matter what method was used to measure impact pressure is to protect the sensor core body was broken to pieces by strong pressure. Specific use which kinds of method have to according to bad condition and the customer's choice now.