Pressure sensors used in many bad environment, some of the bad environment may be more severe, such as pressure sensors need to measure the impact pressure, the measured impact pressure generally requires relatively high pressure Crank Sensor performance, we usually have the following two methods to measure the impact type pressure. 1, changing the pressure transmitter chip, not an ordinary ceramic cores or diffused silicon core, but with strain gages, strain gauges is a strain on the DUT will be converted into an electrical signal changes in the sensitivity of the device. It is a piezoresistive strain sensor of the main components. Resistance strain gauge is the most widely used metal resistance strain gauges and semiconductor strain gauges two kinds. Metal resistance strain gauges have filamentous strain gauge and the metal foil strain gages two kinds. The strain gauge is usually via a special adhesive binder tight mechanical strain is generated on the substrate, the force occurs when the substrate stress, the resistance strain gauge is generated with deformation, the resistance strain gauge is changed, so that the the voltage across the resistor changes. The strain gauge force generated when the change in resistance is usually small, it typically are composed of strain gage bridge, and through subsequent instrumentation amplifier is amplified, and then transmitted to the processing circuit. Strain gauge pressure sensor is generally shock and impact resistance is better, but Crankshaft Sensor accuracy with their manufacturers. 2, with ordinary ceramic pressure sensor or pressure sensor to measure diffusion silicon, but not be measured directly, but with the addition of a buffer tube, which also can measure the impact pressure. This method is economical, easy to install, so the application is very extensive. Regardless of the method is to measure the impact pressure sensor core body protection is not strong pressure washed out. Which method based on the specific use now have a bad environment and customer choice.