What is a common method of testing hydraulic system pressure?

Using a pressure gauge connected to the hydraulic system is a widely accepted method for testing hydraulic system pressure. Pressure gauges are specifically designed to measure the pressure of fluids within a system, providing accurate readings that are essential for evaluating system performance and ensuring safe operation.

When connected to the hydraulic system, the pressure gauge can give immediate feedback about the pressure levels, allowing technicians to identify any issues, monitor performance, and make necessary adjustments. These gauges can display both high-pressure and low-pressure readings, depending on the specifications of the system in question.

Other methods mentioned, such as using a thermometer or an altimeter, are not suitable for measuring hydraulic pressure. Thermometers measure temperature, while altimeters are used to determine altitude and are not designed for pressure measurement in hydraulic systems. Manometers, though related to fluid pressure measurement, are more commonly used for specific applications and may not provide the same direct integration and ease of use as pressure gauges do in hydraulic systems.