* For the sizes 1 to 3 of series ED-HE-MAX the Ø A is the same as Ø C (piston diameter). ** Please choose an air pressure of 4 bar when selecting the size of the air spring.
Mechanical pneumatic level control MPN
A simple, but effective and precise solution is the mechanical pneumatic proportional valve MPN-PVM. The level is continuously sensed using the plunger. The position of the plunger is directly applied to the slide valve and the air spring is either pressurized or vented.
At least three air springs are controlled. If more insulators are required due to reasons of design or load, the system must still be worked in three controlled groups, as otherwise the system is statically overdetermined. This is achieved by using multiple insulators in parallel as a group. An additional air maintenance unit is installed upstream of the control valves to prepare the compressed air.
Very robust galvanised proportional valve. Level accuracy is approximately ± 1/10 mm.
High-precision chromed proportional valve. Level accuracy is ± 1/100 mm.
Electronic pneumatic level control (Electronic-Pneumatic Position Control) EPPC™
Details regarding the BiAir® Membrane air springs with electronic pneumatic level control can be found in chapter EPPC™
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