What is the maximum range of measurement for mechanical gauges used during pressure tests?

The maximum end of a mechanical gauge used during pressure tests should not exceed 5 times the test pressure. This criterion ensures that the gauge can accurately measure the pressure while remaining within a safe operating range. Using a gauge with a maximum capacity that significantly exceeds the test pressure helps prevent potential damage to the gauge and ensures accurate readings. The risk of gauge failure increases when measuring pressures that approach or exceed its maximum rating, which can result in malfunction or inaccurate data during the testing process.

In the context of pressure testing, having the right gauge range is crucial for both safety and the reliability of the testing results. Using a gauge calibrated properly for the given pressure promotes precision and reduces the likelihood of misinterpretation of test conditions. When gauges are calibrated in accordance with the specified limits, operators can confidently assess the integrity of pressure systems without compromising safety.