ipocoyo
Mechanical
- Apr 17, 2016
- 40
Hello All,
Another observation that I am rather curious about. Is there a reason why pressure gauges in particular tend to have fluctuated readings between calibrations? For example, the first calibration would have readings of 0,30, and 60 Pa. The next year it would be 0, 32, and 62 Pa. The next successive calibration would show 0, 30, and 54 Pa.
Also, is there a particular reason why pressure gauges tend to drift more at higher pressures? For example, I have a differential pressure gauge (0-60Pa) which seems to have have an accuracy of 0% at test points 0 and 30Pa. However, when testing at 60Pa (max range) the needle seems to be showing at 55 Pa instead of 60Pa. I've noticed this trend happening with a few other gauges as well.
Still an intern
Another observation that I am rather curious about. Is there a reason why pressure gauges in particular tend to have fluctuated readings between calibrations? For example, the first calibration would have readings of 0,30, and 60 Pa. The next year it would be 0, 32, and 62 Pa. The next successive calibration would show 0, 30, and 54 Pa.
Also, is there a particular reason why pressure gauges tend to drift more at higher pressures? For example, I have a differential pressure gauge (0-60Pa) which seems to have have an accuracy of 0% at test points 0 and 30Pa. However, when testing at 60Pa (max range) the needle seems to be showing at 55 Pa instead of 60Pa. I've noticed this trend happening with a few other gauges as well.
Still an intern
