Which gauge is most likely used for a pump suction pressure gauge application?

In the context of pump suction pressure gauge applications, the compound gauge is particularly suitable because it is designed to measure both pressure and vacuum. This is essential in a pump suction setup, where the pressure can drop below atmospheric levels, indicating that the pump is working to draw fluid.

The compound gauge has a scale that typically encompasses both psi (pounds per square inch) and vacuum (inches of mercury), allowing for accurate readings in situations where suction pressure may need to be monitored. This feature is vital for ensuring that the pump operates effectively without cavitating, which can occur if the suction pressure is too low.

While digital gauges and pressure transducers are useful for modern applications and offer enhanced features, they do not specifically cater to the dual measurement of pressure and vacuum in the same manner as a compound gauge. Differential pressure gauges, on the other hand, are generally used to compare the pressure differences between two points rather than monitoring a single-pressure situation, which is more aligned with pump suction requirements.