1.Vacuum degree
Kpa is a physical quantity used to measure the degree of gas rarefaction.It takes the "theoretical vacuum" as the reference, because the pressure value obtained is higher than the "theoretical vacuum", so it is positive.Also known as "ultimate vacuum", "absolute vacuum", "absolute pressure".
It means that the vacuum pump is connected with the test vessel, and after being put into the gas to be tested, it is continuously pumped for a long time. When the gas pressure in the container no longer drops and maintains a certain value, this pressure is called the ultimate vacuum of the pump.The smaller the value is, the closer it is to the theoretical vacuum.
2.Negative pressure
The value of the vacuum measured by an ordinary vacuum gauge.The common unit is also Kpa.It takes "one atmosphere" as the reference, which refers to the difference between the measured gas pressure and atmospheric pressure.It's negative because the pressure is lower than the pressure of one atmosphere.Also known as "gage pressure," "relative vacuum," "relative pressure."
3.Flow rate
Refers to the volume of gas passing through the suction port of the vacuum pump in unit time.The common unit is L/Min."Flow" parameter if no special instructions, especially at 20 ℃, under normal atmospheric pressure peak flow.
4.Voltage
It refers to the power supply mode required by the normal operation of the pump. For example, 12V DC refers to the need to convert 220V AC into 12V DC through transformers, switching DC power supply, or directly supply power through the DC power supply of battery type.
5.Current
Refers to the current required for the pump under rated voltage, which depends on the load of the pump. The larger the load, the larger the current. However, our micro vacuum pump is of low power consumption.