CGS Pressure gauge

for R134A, for quick capacity measurement in air conditioners in cars
The pressure gauge is connected when the air conditioning is running on the low side and you can see whether the air conditioner is running or not. It can also be seen whether the low pressure is in the green range. Colored areas make it easier to recognize. Simply put the manometer on the low pressure connection of the running air-conditioning and read pressure value. A functioning automotive air conditioning has a low pressure of approx. 2 bar. If the pressure remains 0 bar or significantly higher, the air conditioning is without function. An accurate diagnosis is only possible with a high and low pressure, e.g. with the CGS 2-valve diaphragm test fitting "M2W".