HY series GAS automatic proportioning - NX specializing in device two or more gas set according to the proportion of automatic matching of the device. Mainly used in nitrogen - hydrogen, nitrogen - chlorine, n - helium, nitrogen - sulphur dioxide etc. Mixture ratio It mainly consists of metal rotor flow, mass flowmeter, automatic control valves, gas composition analysis instruments, mixer and intelligent control system. Feature Automatic proportioning device is mainly have three kinds of control ways, according to the different occasions preferred choice: - single closed-loop control: a post-mortem on products through a gas meter which match the content components, the intelligent controller sampling control pneumatic film regulator, adjust the components of the flow. Applicable to the mixture of using a relatively stable content component. Has the process is simple, investment, etc. 1 ~ 25%, the ratio of burdening accuracy ± 1%. - cascade ratio control mode: by measuring the mixture of metal rotor flow through the multicomponent gas flow, according to the proportion of PLC control quality, scale, automatic regulation flow controller for multicomponent gas flow. Time And by a chromatography instrument for product gas in multicomponent gas content with times, automatic correction of sampling control parameters. Applicable to the mixture of large dosage often changes and the content components. With automatic control, fast response time, high flow rate and the content of any component changes, etc. 1 ~ 25%, the ratio of burdening accuracy ± 0.05%. Gas pressure control mode: - the ratio of the stability control is on the next two hybrid differential pressure to achieve steady flow of gas. Airflow through orifice and needle valve into mixing chamber after mixing into buffer tank. When the buffer tank pressure rises to its control switch on the limit, the components of the gas through closed off into the air intake solenoid valves. With the constant use of mixture, buffer tank pressure decreases, reaching its control, open the inlet valve each component gases into the air, and automatic cycle. Applicable to steady flow, the precision of matching. |
