Question 100Refrigeration & AC - 1st Asst/Chief

The correct answer is D) saturated refrigerant temperature. Pressure gauges used in refrigeration service are typically compound or standard pressure gauges that display both pressure and the corresponding saturated refrigerant temperature. This is because the pressure and temperature of a refrigerant are directly related through the refrigerant's saturation curve. By displaying the saturated temperature, the technician can easily determine the refrigerant condition and identify any issues, such as low refrigerant charge or the presence of non-condensable gases. The other options are incorrect because absolute pressure does not directly indicate refrigerant conditions, and sub-cooled or superheated refrigerant temperatures are not directly displayed on standard pressure gauges.