Electrical proportional valves now control the pressure controllers of gas supply systems.

 

It is the first time that the German manufacturer is supplying a reform module for dome-loaded pressure regulators (dome pressure reducers), thus permitting the operating pressure to be controlled remotely.

 

The advantage: Even complicated production processes can be monitored optimally, as the required gas pressure of every process step is automatically communicated and set by the regulator.

 

Utilizing programmable logic controllers (PLC), the electrical proportional valve is controlled via either the electrical current (Ampere) or the voltage (Volt). Because pressure transmitters record and monitor the back pressure, setpoint deviations can be detected and automatically compensated for by the system.

With a large setting range, operating pressures can be chose from 0.5 to 30-bar (7.25 to 435 psi), states WITT. Currently, it is the convention to set the operating pressure mechanically by hand—an established procedure, but one that has tended to be complicated and inaccurate in comparison to the electrical variant. The electrical control with PLC automatic-regulation also helps to reduce costs for the exact pressure regulation preventing the blow-off of expensive gases or process interruptions.

 

WITT is one of the major manufacturers of equipment for technical gases and their applications. WITT dome-loaded pressure regulators are among the most powerful of their kind. They are distinguished in particular by their pressure consistency even with highly fluctuating withdrawals.