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auto oil pressure gauge
1) Mechanical oil pressure gauge
Mechanical oil pressure gauge is the simplest tool to detect the pressure of hydraulic system. It is equipped with a bend circular arc hollow spring tube, pull rod, rack, gear, pointer and buffer mechanism, etc. Testing When the hydraulic system is under pressure, the pressure oil enters its hollow spring tube, and the oil pressure deforms the spring tube,The gear is driven to rotate through the pull rod and rack, and the gear drives the pointer to rotate, so as to reduce the oil pressure converted into pointer rotation, so as to display the pressure value of the detected part of the hydraulic system. Detected if the oil pressure at the position is pulsating, the pointer of the oil pressure gauge will shake with the pulsation.Mechanical oil pressure gauge is divided into anti vibration oil pressure gauge and anti vibration oil pressure gauge. The anti vibration oil pressure gauge is spiral.
the spring tube and watch case are filled with mineral silicone oil with high viscosity, which can play a damping role and can be pointed the needle plays the role of vibration damping and vibration resistance to reduce the pointer vibration, so the vibration resistant oil pressure gauge has a dynamic response poor, anti vibration oil pressure gauge is more suitable for dynamic detection of hydraulic system pressure.When the mechanical oil pressure gauge detects the oil pressure, it shall be in a vertical state, and the sight line shall be perpendicular to the dial straight, you can see the accurate pressure value. During each test, check whether it is in good condition, the inspection method is as follows: when the pointer is stable at a certain pressure value, tap it slightly with your finger hit the case of the oil pressure gauge. If you hit it once, the pressure value indicated by the pointer will change with the vibration if it changes, it indicates that the oil pressure gauge is faulty and the displayed pressure value is "false value".
2) Digital display oil pressure gauge
Digital display oil pressure gauge, also known as digital oil pressure gauge, with built-in pressure sensor, is an oil pressure gauge integrating pressure detection and display. It has good pressure impact resistance and high display accuracy. The maximum value detected can stay on the display panel and has the function of one key reset. In the process of detecting the pressure rise of the hydraulic system, the number displayed by the digital display oil pressure gauge changes continuously in an instant. The maintenance personnel cannot observe the change process of the pressure from low to high, but can only see the maximum value of the pressure. If the measured hydraulic system pressure has pulsation, the digital display value will also change instantaneously and continuously, so it is difficult to observe the amplitude of pulsation change.
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