Vacuum switches

Designed to provide one closed contact when vacuum in the system is too low or too high. 

Low vacuum switch type M 3211 C with sensor is designed to provide one closed contact when vacuum is lost in the system.
The switch will  activate when vacuum is lower than - 0,2 bar.

High vacuum switch type M 3220 C with sensor is designed to provide one closed contact when vacuum is high and when both ejector and vacuum regulator are in operation. The switch will activate when vacuum is higher than - 0,4 bar

INSTALLATION

Vacuum switch must be mounted vertical to a wall convenient to point vacuum monitoring. High vacuum switch should be mounted  as close to vacuum regulator as practical. Low vacuum switch should be mounted between manual or automatic gas flow control valve and ejector.

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Model: M 3210

Low vacuum switch: when vacuum < - 0. 2 bar

Model: M 3220 

High vacuum switch: when vacuum > - 0. 4 bar