- Question 1: How to verify the accuracy of the temperature?
- Answer: The temperature measured by the gauge is allowed to deviate by 3% from the actual temperature. There is a simple way to verify the accuracy of the temperature: Take out the black wire on the temperature clamp and put it in the boiling water. If the temperature is 100 degrees Celsius or the error is plus or minus 3%, it is normal. NOTE: Please pay attention to temperature unit conversion between Celsius/Fahrenheit.
- Question 2: Why does the pressure value fluctuate slightly? Is it a leak or is the data inaccurate?
- Answer: According to the current level of hardware processing in the industry, it is difficult to achieve a 100% completely sealed valve on the market. The sealing degree of our guage hardware can only reach 99%. But these slight leaks will not affect the use.
- Question 3: Does this gauge have a micron reading function?
- Answer: No, the accuracy of this refrigerant manifold gauge can only reach the accuracy equivalent to this unit: -101 Kpa-0 Kpa.
Warmly Note: The HVAC guage will read random numbers when it is powered on. You must press the ZERO key to clear the numbers after you power it on, and then you can use it normally (It is not correct to use it directly without pressing the ZERO button). Before using the HVAC guage, please make sure that refrigerant hoses and temperature sensor clamps are connected properly. Poor connection of the temperature sensor clamps will make it impossible to read the temperature. Poor connection of the refrigerant hoses will cause refrigerant leakage.
Correct steps:
1. Power it on, then close the two valves, press the ZERO key to clear the reading.
2. Connect the three-color hoses, then open the valve, and use it normally.
Regarding the evaporation temperature, the condensing temperature is explained as follows:
1. Evaporating temperature: The lower the evaporating temperature, the lower the evaporating pressure and the refrigeration coefficient of the system. In this case, the load of the system continues to increase, which causes the energy consumption of the system to continue to increase.
2. Condensing temperature: The higher the condensing temperature, the higher the condensing pressure, the higher the compression ratio, the higher the shaft work, the lower the air delivery coefficient, the faster the actual exhaust volume deceleration, and the lower the cooling capacity.