v  Procedure of pressure guage Calibration:

Ø  Connect the equipment as shown in the above figure to calibrate the pressure gauge.




 Apply pressure 0%(zero adjust)

 Adjust the zero screw or put the pointer on 0%

 Apply pressure 100%(span adjustment)

To correct the indication increase or decrease the sector arm

Apply pressure 50%(linear adjust)

 Adjust the length of link or pull the pointer using a puller and place at the correct spot

Check points 0%,25%,50%,70% and 100%

Repeat these steps to get correct values