Why compound gauge is used in refrigeration system?
What are gauge manifolds made of?
A tool, constructed of gauges, valves, and refrigerant hoses, used to read pressures inside refrigeration systems.
What is the use of gauge manifold?
Vacuum gauge is measured from ambient air pressure in the negative direction. So for example at ambient air pressure the vacuum reading is 0 bar gauge and if a suction pressure of 0.25 bar is applied, the vacuum reading will be -0.25 bar gauge.
An absolute pressure gauge uses a full vacuum as zero. When the unit is sealed, it’s done under a full vacuum. Therefore, all of its measurements are positive. With compound pressure, the zero reference point is atmospheric pressure, which is ~15 psi at sea level.
What is the main function of refrigerator gauge?
Compound Gauge (Low Side) All air conditioning systems can, under certain conditions, drop from a pressure into a vacuum on the low side. It is necessary that a gauge be used that will show either pressure (psi and kPa) or inches of mercury vacuum (Hg.).
