When breathe source, air pressure (ie, signal pressure air lock Gas safety burner valve) is less than the set pressure of the air lock Gas safety burner valve, pneumatic actuator air lock Gas safety burner valve action, smart Gas safety burner valve positioner output of gas supply lines and pneumatic control Gas safety burner valve adjustment the membrane cartridge is automatically cut off gas supply pipeline, namely the pressure adjusting Gas safety burner valve pneumatic control signal membrane cartridge is locked from outside sources on air, maintaining the original signal and the control Gas safety burner valve spring reaction force equilibrium pressure, thereby failure to achieve when air Gas safety Burner Valve pneumatic control Gas safety burner valve position adjustment is held in place before the failure.
P / I conversion unit with a permanent magnet, coil, levers, nozzles and other parts of the electrical signal from the control system output signal is converted into a suitable pressure to push start Gas safety burner valve. According to the structure of the form, P / I conversion unit into the nozzle flapper, and the piezoelectric Gas safety burner valve spool type categories. Currently, the market mainstream smart Gas safety burner valve positioner in the I / P conversion unit mainly or piezoelectric nozzle flapper Gas safety burner valve. When breathe source, using the smart Gas safety burner valve positioner action of these two structures the same principle as described above. Using the time is now cut off the signal and power smart Gas safety gas Burner Valve positioners two different structures of the operation principle is analyzed separately.
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