What is the common instrument utilized for troubleshooting pneumatic circuits?

The pressure gauge is a key instrument for troubleshooting pneumatic circuits because it allows technicians to measure the pressure levels within the system. In pneumatic applications, maintaining the correct pressure is crucial for the operation of actuators, valves, and other components. By using a pressure gauge, technicians can determine if the system is operating within its specified pressure range, identify leaks, or assess the performance of the compressor and other pressure-generating elements.

While other instruments such as multimeters might be useful in electrical contexts and flow meters can measure air flow rates, they do not specifically target the unique characteristics and requirements of pneumatic systems as effectively as a pressure gauge does. A vacuum meter also measures pressure but in vacuum conditions, which may not be relevant for all pneumatic circuits. Thus, the pressure gauge stands out as the most common and practical instrument for ensuring pneumatic systems function correctly during troubleshooting.