What device is installed during a propane pressure test at the refrigerator?

The device that is installed during a propane pressure test at the refrigerator is a manometer. A manometer is specifically designed to measure the pressure of gases, making it essential for ensuring that the propane system is functioning within its specified pressure range. Proper pressure levels are critical for the safe and efficient operation of propane appliances, including refrigerators.

During the pressure test, the manometer provides real-time readings that allow technicians to identify any irregularities in the pressure, which could indicate leaks or other issues in the propane system. This helps ensure safety and performance, as both high and low pressures can lead to operational problems or hazards.

While a pressure gauge can also be used for measurement, the manometer is often preferred for more precise readings in low-pressure situations, typical in propane systems. Thermometers and flow meters serve different functions and are not relevant to measuring gas pressure in this context.