The refrigerant pressures are dependent on the type of refrigerant.
300psi high side and 80psi low side
In regards to a water chiller unit, the terms low pressure and high pressure refer to the compressor, which takes low pressure and compresses it into high pressure gas, which is then turned into a liquid to cool the unit.
Pressure = Force normal to the surface per unit surface area The SI unit for pressure is N/m^2
A pressure switch a valve that shuts off the unit when the pressure is to low or to high
Depends on If it's absolute or relative. Vacuum in any unit is zero in absolute pressure. Vacuum in any unit is -normal air pressure in relative pressure.
The high pressure side.
Bar is a unit used to measure pressure, one bar is the normal atmospheric pressure of the on the surface of the earth, and ten bar is when the pressure is ten times the normal atmospheric pressure on the surface of the earth.
The pressure that pushes down on us all day.
hPa is hectoPascals, the unit of atmospheric pressure. 1026 hPa is relatively high pressure.
normal low side operating temperature for an AC system using R134-a refrigerant is between 21 and 35 p.s.i. high side pressure between 190-220 p.s.i.
No, it is not normal. The oil pressure sender unit screws out. Purchase a new one and you will see how it is removed.
bad sending unit, or bad regulator.