When selecting a pressure gauge, what should the range be?

When selecting a pressure gauge, it is recommended that the range of the gauge be double the maximum reading expected. This practice ensures both accuracy and longevity of the gauge. A gauge that operates at a range exceeding the maximum pressure being measured can provide more precise readings within the normal operating range because it avoids the risk of being operated close to its limits. Moreover, having a gauge with a higher range reduces the likelihood of damage due to pressure spikes, which could occur during operation. This helps maintain the integrity of the gauge over time, allowing it to function accurately without being subjected to undue stress.

Choosing a range equal to or lower than the maximum expected pressure may lead to less accurate readings and increased wear and tear, which can ultimately affect the reliability of the measurement. Therefore, selecting a gauge with a range that is double the maximum expected pressure is the best practice for ensuring both accuracy and durability in pressure measurement.