Pressure gauge bridge analyzer 1-way low with viewer without pressure gauge

- VIDEO TUTORIAL AIR CONDITIONING GAS CHARGING HOW TO USE A GAS ANALYZER When performing gas charging, we will need several measuring devices and some tools. There are several methods for adjusting the refrigerant charge as well as the mechanism when charging equipment. First and foremost as the main element we will need a pressure analyzer, normally a two-valve analyzer is used, but we should note that there are also four and five-valve analyzers on the market. The analyzer consists of two valves, one for low pressure and another for high pressure. Two pressure gauges, one blue in color that will indicate the low pressure, its range is usually 0 to 10 bar and incorporates several scales in relation to pressure-temperature of the most characteristic gases (R 22, R 134a, R 407C), the other gauge will be red in color, this will indicate the high pressure, its range is usually 0 to 30 bar, and as in the case of the low pressure gauge it also incorporates several temperature scales for the aforementioned gases. The analyzer consists of three SAE ¼ threaded couplings for gases such as R 22, R134a, R 404 and R 407C, for R 410C gas we must use threaded couplings for 5/16 since it operates at higher pressures. In these three threads hoses will be connected that will unite on one side the low pressure part of the refrigeration equipment to the low pressure gauge (blue), on the other the high pressure part of the refrigeration equipment to the high pressure gauge (red) and a hose connected to the center thread that will be used as a service hose that will be yellow in color, in this yellow hose the refrigerant gas bottle will be connected. It also incorporates a sight glass where the passage of refrigerant fluid can be visualized. First, a series of precautions will be followed, it will be checked that at all couplings there are no damaged threads, dirt, dust, oil or grease. It will be verified that on the gauge sight glasses there is no dust, if there is it will be cleaned with a clean cloth, in no case will it be cleaned with aggressive detergents or disinfectants. Second, hose purging will be performed. The yellow hose is connected to the refrigerant bottle which will be closed. The low pressure hose (blue) is connected to the refrigeration system. The bottle is opened. When the hoses are filled with gas, the air is purged from them. We will perform the same operation for the high pressure hose (red). Charging can be done by low or high pressure: By low pressure (pure or azeotropic gases) The yellow hose is connected to the refrigerant gas bottle, it is purged and the system is saturated with gas, once the pressures equalize the refrigeration equipment is started and the low pressure analyzer valve is opened so that the system itself introduces the gas into the equipment. The bottle can be heated to increase the temperature and in turn the pressure and thus we will achieve introducing gas more quickly. This method is the most used since the superheat and subcooling offered by the refrigeration circuit can be measured and adjusted without needing to know the final weight of refrigerant, another of the indicators that will help us know if the charge is adequate will be the current consumption of the compressor as well as the temperature differences that we can measure in the heat exchangers. The approximate data for refrigeration equipment will be: Superheat Between 5°C and 12°C Subcooling Between 5°C and 12°C Temperature difference in air heat exchangers Approximately 10°C Temperature difference in water heat exchangers Approximately 5°C Electrical consumption Below the nominal current