A device that measures and displays the pneumatic pressure within an air suspension system. It provides a reading, typically in PSI or BAR, indicating the amount of compressed air supporting the vehicle’s load. For example, a reading of 90 PSI might be necessary for a heavily loaded truck, while a reading of 60 PSI might suffice for an unloaded condition.
Monitoring this pressure is vital for maintaining optimal ride height, load leveling, and overall system performance. Accurate readings allow operators to adjust the air pressure to accommodate varying load conditions, preventing damage to the suspension components and ensuring a comfortable ride. Historically, these instruments were primarily mechanical, but electronic versions offering digital displays and integrated warning systems are now increasingly common.