How to treat Enpike's hydraulic meter?

1, first of all, the reading of the outer ring of the pressure gauge is red, corresponding to the red unit PSI；; The inner ring reading is black, corresponding to the black unit MPa.

2. When looking at the pressure gauge, aim your eyes at the dial scale. The eyes, pointer and scale form a straight line perpendicular to the dial, and then read after the pressure is stable; If the pressure is unstable and the pointer swings, read it several times, that is, read the maximum and minimum values of the pointer, and then take the arithmetic average.

3. Secondly, you should know that inHg is inches of mercury and bar is bar; MPa is MPa, and 1MPa is equal to145 psi; ; PSI is pounds, and pressure is easier to understand with MPa. R and numbers are the code names of refrigerant meters. There is a certain correspondence between the pressure and temperature of the refrigerant pressure gauge.