Industrial Pressure Gauges

Select a gauge whose maximum scale is about 1.5 to 2 times the normal operating pressure; this provides accuracy and prevents over-range damage while keeping the reading in the middle of the dial for best resolution

Common types include analog bourdon tube gauges for general industrial use, diaphragm gauges for low-pressure and corrosive media, and digital gauges for higher precision and data logging; choose based on pressure range, media compatibility, accuracy, and whether you need electronic output

Accuracy is typically given as a percentage of full scale (e.g., ±1% FS); for critical measurements pick a lower percentage and ensure the gauge is calibrated for the pressure range you will use most often

Match wetted materials (brass, stainless steel, or special alloys) to the process fluid to prevent corrosion, and verify thread type/size (NPT, BSP) and mounting style (bottom, back, panel) to ensure proper installation

Inspect gauges regularly for mechanical damage or leaks, isolate and remove spikes with snubbers or gauges with dampening for pulsating systems, and have gauges calibrated periodically against a traceable standard—frequency depends on use but commonly annually

Digital gauges offer higher resolution, easier reading, and features like data logging and multiple units, while analog gauges are rugged, require no power, and are often preferred for simple, continuous visual monitoring; choose based on feature needs, environment, and power availability

Factor in initial price, required accuracy and materials, calibration frequency, expected service life, and potential downtime costs—higher upfront cost for more durable or accurate gauges can reduce replacement and calibration expenses over time