How to Read Pressure on an Oil Pressure Gauge?
1 Answers
First, observe that the outer scale readings are in red, corresponding to the red unit PSI; the inner scale readings are in black, corresponding to the black unit MPa. Align your eyes with the dial scale, ensuring that your eyes, the pointer, and the scale form a straight line perpendicular to the dial. Read the value once the pressure stabilizes. inHg stands for inches of mercury, bar is a unit of pressure; MPa stands for megapascal, where 1MPa = 145 psi; PSI is pounds per square inch.