Precision contact systems (Limit value switches)

Available: DN 63 to double | DN 100 to quadruple | DN 160 to quadruple

 


LOW-ACTION contacts

are used in the absence of high contact loads and vibrations.

 

Technical Data

Nominal operating voltage: max. 250 V

Making and breaking current: max. 0,7 A

Breaking capacity:
10 W 18 VA

Switching precision: approx. 0,5 % of final scale value

     

SNAP-ACTION contacts

can be used under almost all operating conditions and are partially not affected by vibrations.

 

Technical Data

Nominal operating voltage: max. 250 V

Making and breaking current: max. 1,0 A

Breaking capacity:
30 W 50 VA

Switching precision: approx. 2-5 % of final scale value

       
Zoom picture

Technical data sheets

   

INDUCTIVE-contacts

are equipped with non touching proximity NAMUR switches. They should be preferable used with oil filled measuring instruments. With an ex-prooved isolating amplifier they can be used in explosion proof areas.

 

Technical Data

Rated voltage: 8 V DC

Switching precision: approx. 0,5 % of final scale value

       
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ELECTRONIC-contacts

are equipped with non touching proximity switches. They should be preferable used with oil filled measuring instruments, for operating under low voltages and for small DC-loads, eg. for direct connection to a PLC.

 

Technical Data

Operating voltage:
10-30 V DC

Breaking capacity: < 100mA

Switching precision: approx. 0,5% of final scale value

       
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PNEUMATIC-contacts

are equipped with with pneumatic slot sensors. They are used where compressed air is readily available, and/or electric current is lacking.

 

Technical Data

Operating pressure: 1,4 bar

Admission pressure: approx. 0,1 bar

Outlet pressure: approx.
30 mbar

Internal air consumption: approx. 30l/h

       
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LIMIT VALUE SWITCHES in a modular system

All before mentioned contacts are likewise available in a modular system. To simplify mounting of contacts onto the dial of instruments, we have developed an add-on unit which can be fitted to any measuring instrument within minutes.


The add-on unit consists of a transparent hood, an adjusting lock, cable gland or plug respectively, and a special contact with a plug base and fork coupling.

 

Models

standard with PG cable gland or oiltight with plug and cable, completely mounted and wired.

Available in DN 100,
DN 4 ½ ", DN 6", DN 160

Zoom picture Technical data sheets »standard«
Technical data sheets »oiltight«