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Application of vacuum gauge and gas mass flow meter in vacuum coating: In the coating industry,
there are mobile phone shells, faucets, panels, etc. with a thin layer of film on them.
Gas mass flow meters are mainly used for powder feeding and air blowing.

 

For example, there is a layer of gold powder and protective gas on the mobile phone shell. When coating the film,
the gold powder needs to be sent to the metal surface. (When the powder is fed, the conventional gas is air or nitrogen ,
or it may be gas, sometimes other gas is needed. It has a color reaction with the powder, etc.), and the working
environment is high temperature when it is attached. At this time, it is also necessary to blow nitrogen or argon at
the same time to prevent oxidation. At this time, a gas quality controller is also needed to control the amount of argon.

sales01@cxflowmeter.com

 

The coating must be vacuumed. Only in the case of vacuum, the coating will not react with other gases in the air.
The pressure is basically a negative pressure state.

4 to 6 controllers are used on a coating machine, sometimes up to 12 controllers.

Note: Vacuum pressure gauge can also be used in vacuum coating industry

 

Gas mass flow meter and vacuum gauge are used together. The vacuum gauge has a very low control range,
which can control the extremely high vacuum condition of the coating chamber. To

 

The vacuum gauge can realize fast control, mainly based on the 0~10V linearity provided by the Pirani vacuum gauge sensor.
In the above application, the 0~10V signal corresponds to the extremely high vacuum of 0~0.5Torr. The flow controller uses
this signal provided by the vacuum gauge to accurately control the extremely high vacuum condition of the coating chamber.

 

Through local analog signal or RS232 communication, the set point of the controller can be easily set. To

The mass flow meter upstream of the vacuum controller is not affected by the downstream vacuum, and can accurately
measure the mass flow, volume flow, and cumulative mass of the gas flowing into the vacuum chamber.

 

Shanghai Cixi Instrument Co., Ltd. can provide many models of vacuum gauges and mass flow meters. If you want to know
more about the parameters and quotations of different models, please contact winny: sales01@cxflowmeter.com