What is the minimum pressure gauge range needed for each steam boiler?

The minimum pressure gauge range needed for each steam boiler is determined by the Maximum Allowable Working Pressure (MAWP) of the boiler. The MAWP represents the maximum pressure that the boiler is designed to handle safely. Therefore, selecting a pressure gauge that operates at 1.5 times the MAWP ensures that the gauge can accurately measure the pressure within the system while providing a safety margin.

Using a gauge rated at 1.5 times the MAWP helps to account for pressure fluctuations and prevents over-pressurization risks, which could be hazardous. This margin also ensures that any potential surges in pressure above the normal operating conditions can be monitored without exceeding the gauge's limits, thus enhancing safety and operational reliability.

In contrast, pressure gauge ranges such as 0-30 psig, 0-60 psig, or 0-100 psig may not provide adequate range for boilers with higher MAWP, leading to potential inaccuracies in pressure readings and safety risks.