Vacuum switches

Design and function

These calibrated and temperature-compensated sensors deliver extremely accurate measurements. There are two programmable switchpoints ready to be processed. The switching points and the hystereses are adjustable. The “adjustable output” functions are distinguished by a red and a green LED. The sensors are user friendly and can be easily re-configured for special applications.

central ejectors

Vaccum generators available with
- Blow off function
- Air saving circuit
- Integrated vacuum switches
- Control valves

To this end, the production series HV-SA with flange-mounted electronic vacuum switches has a parts control or an electronically controlled saver circuit with parts control. With an integrated mechanical-pneumatic vacuumregulator, the production series HV-P is able to carry out an automatic saving function. Electronic vacuum switches also enable a parts control. An air blast in connection (1.2), which also has a protective filter fitted against the infiltration of dirt, quickly relieves the vacuum and in the process, also cleans the protective filter in (2). All ejector models can also be delivered with integrated solenoid valves, in the form of a compact unit. A fully pneumatic ejector control system with a pneumatic vacuum switch is possible on request.

Series HVBM 

Central ejectors according to the Venturi principle, incl. solenoid pilot valves for mounting on RF manifold system.

Design and function
The central ejector is based on the Venturi principle. It is mounted on a RF- manifold system. A double 3/2-waypilot valve, type BM-01-310/2-HN, provides the control of the vacuum and blow off port. The unit is available as single ejector and can be extended up to 6 stations. 3 different flow sizes are available. Scope of delivery: Acetal-resin silence with self-cleaning granulate filling.

column ejectors

Vacuum generators with 1, 4, 6 and 8 independent vacuum
The column ejector get it’s name from it’s cylindrical geometry. The pressure supply is introduced radially on the ejector body and routed internally into the center of the ejector. The air flow is directed downwards through an orifice to a baffle plate and is accelerated radially in all directions until the desired sub- or supersonic speed is obtained at the point of ejection 1. At this point the air expands and vacuum is created (Venturi principle). At point 2, the accelerated air flow is mixed with the drawn air. At point 3, the air speed is reduced and flows directly upward through a silencer to atmosphere. Several vacuum ports are positioned around the outer diameter into point 2, to connect several vacuum cups on one ejector.

classic ejectors

AIRTEC Classic ejectors work according to the Venturi principle. Air compressed between 4 and 6 bar, which is as dirt and oil free as possible, flows through the Venturi nozzle (B) via the compressed air supply (A); this is protected against large particles of dirt by a protective filter.