Working principle of hydraulic pressure sensor
Hydraulic pressure sensor is the most commonly used pressure sensor in industrial practice. It is widely used in various industrial automation environments, pipe air supply, boiler negative pressure and many other industries.
The working principle of the hydraulic pressure sensor is that the pressure directly acts on the diaphragm of the sensor, causing the diaphragm to produce a micro displacement proportional to the pressure of the medium, so that the resistance of the sensor changes, and the electronic circuit detects this change, and converts and outputs a The standard signal corresponding to this pressure.
Hydraulic pressure sensor characteristics
◆ Standard thread pressure measurement method.
◆ All stainless steel structure, protection grade IP68.
◆ The measurement accuracy is up to 0.1 level.
◆ RS485, 4~20mA output optional.
◆ Polyurethane professional cable, resistant to high temperature and corrosion.
Hydraulic pressure sensor parameters
Flat film type, fully sealed stainless steel welding structure, small size, high sensitivity, adjustable zero point and full scale
Application: hydraulic pressure, die-casting, central air conditioning system, constant pressure water supply, locomotive braking system, light industry, machinery, metallurgy, petrochemical, environmental protection, air compressor and other automatic control systems. Pass the EU CE certification
Comprehensive accuracy: 0.1%FS, 0.25%FS, 0.5%FS Output signal: 4～20mA (two-wire system), 0～5V, 1～5V, 0～10V (three-wire system)
Power supply voltage: 24DCV (9～36DCV)
Medium temperature: -20～85～150℃ Ambient temperature: normal temperature (-20～85℃)
Zero temperature drift: ≤±0.05%FS℃
Range temperature drift: ≤±0.05%FS℃
Compensation temperature: 0~70℃
Safety overload: 150%FS
Limit overload: 200%FS
Response time: 5 mS (up to 90% FS)
Load resistance: Current output type: maximum 800Ω; voltage output type: greater than 5KΩ
Insulation resistance: greater than 2000MΩ (100VDC)
Sealing grade: IP65 Long-term stability performance: 0.1%FS/year
Vibration influence: Within the mechanical vibration frequency of 20Hz～1000Hz, the output change is less than 0.1%FS
electrical interface (signal interface): tightening nut + four-core shielded wire
Mechanical connection (threaded interface): M20×1.5, etc., other threads can be designed according to customer requirements