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transmission oil pressure gauge
First look at the red reading on the outer ring of the pressure gauge, corresponding to the red unit PSI; the black reading on the inner ring, corresponding to the black unit MPa. When looking at the pressure gauge, you should align your eyes with the dial scale, and the eyes, pointer and scale form a straight line perpendicular to the dial, and read after the pressure is stable; if the pressure is unstable and the pointer swings, read it several times, that is, read Take the maximum and minimum values of the pointers and then take the arithmetic mean.
Secondly, you must know that inHg is inches of mercury, bar is bar; MPa is megapascal, 1MPa=145psi; PSI is pounds, and it is easier to understand the pressure by looking at MPa. R and numbers are the codes of refrigerant gauges; the pressure and temperature of refrigerant pressure gauges there is a certain corresponding relationship.
Precautions for the use of hydraulic gauges:
1. The instrument must be vertical: when installing, use a 17mm wrench to tighten it, and the case should not be twisted; avoid collisions during transportation;
2. The instrument should be used at an ambient temperature of -25~55°C;
3. Use the vibration frequency of the working environment
4. During use, because the ambient temperature is too high, the indication value of the instrument does not return to zero or the indication value is out of tolerance, you can cut off the sealing rubber plug on the upper part of the case, so that the inner cavity of the instrument can communicate with the atmosphere;
5. The scope of use of the instrument should be between 1/3 and 2/3 of the upper limit;
6. When measuring corrosive media, media that may crystallize, and media with high viscosity, an isolation device should be added;
7. The instrument should be calibrated frequently (at least once every three months), and repaired in time if any fault is found;
8. From the date of leaving the factory, if the instrument is found to be invalid or damaged due to poor manufacturing quality within half a year under normal storage and use conditions, the company will be responsible for repairing or replacing it;
9. Instruments for measuring corrosive media are required, and the requirements should be specified when ordering.
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