Graeff pressure sensors are widely used in various industries, and pressure sensors play an important role in hydraulic systems. The application range of pressure sensors is very wide, mainly used in fields such as booster cylinders, boosters, gas-liquid booster cylinders, gas-liquid boosters, and pressure machines.

Pressure sensors are mainly used in hydraulic systems to achieve closed-loop control of force. However, not any pressure sensor can accomplish this task. Because when the control valve core suddenly moves, a peak pressure several times the system working pressure will be formed in a very short period of time. In typical walking machinery and industrial hydraulics, if such extreme working conditions are not taken into account during design, any pressure sensor will quickly be damaged. This requires us to use impact resistant pressure sensors. There are two main methods for pressure sensors to achieve shock resistance: one is to replace the strain gauge chip, and the other is to connect an external coil.

Generally, in hydraulic systems, we adopt the first method mainly because it is easy to install. In addition, another reason is that the pressure sensor also has to withstand continuous pressure pulsation from the hydraulic pump. Although it is not as severe as the pressure peak, long-term operation can still cause damage to the sensor. The latest strain gauge pressure sensor solves this series of problems, and the new design is suitable for the vast majority of applications and can work millions of times.

Even after years of use, general strain gauges can still provide very accurate, reliable, and stable signals under harsh working conditions. Moreover, it also has excellent overpressure capability and can withstand pressure fluctuations that often occur in hydraulic systems. So although strain gauges are relatively expensive, they are still widely used in hydraulic systems.