Birkett Controls Pty Ltd

 






Pressure Products

Trafag advanced technology and precision manufacture guarantee faultless operation especially in applications where equipment features such as shock-resistance, vibration stability, electromagnetic compatibility, long-term stability or temperature insensibility are essential.

If you would like to find out more about these products or have any inquiry, please call us 0418 325 563 or complete the form here

The Trafag product portfolio includes pressure switches, sometimes referred to as pressostats, as well as pressure transmitters.

Trafag Pressure Products:

Switches
Transmitters




SWITCHES

Technical Overview:

Trafag pressure switches are used when pressure has to be controlled or monitored via an electric on/off switching signal. These switches are available in various designs in respect of indication, switching capacity and approvals (CE, Ex, Shipbuilding, Railways) as well as the sensor system involved. In mechanical pressure switches, a pressure sensor actuates an electric micro switch. In electronic pressure switches, a pressure sensor signal controls relays or transistor outputs.

Available Products:

Piston

For hydraulic applications with frequent switching and abrupt pressure changes.

Metal bellows

For fine control of pressure in liquid, vapor, and gaseous media.

Membrane

For the measurement of liquid, vapor, and gaseous media in applications with high switching frequency, abrupt pressure changes and where a high level of overpressure safety is required.

Micro-switch models

Various switching capacities:
Verschiedene Schaltdifferenzen Various differential gaps (fixed value or   adjustable)
Gold-plated switching contacts
Versions for enhanced vibration stability

Accessories

There is a large choice of accessories such as pressure connector adaptors, pressure peak pulsation dampers, snubbers, etc.


TRANSMITTERS

Technical Overview:

Trafag pressure transmitters are used for the electronic measurement and evaluation of pressure values. They are available in many different versions with regard to pressure and electrical connections, measurement procedures, electric output signals, and approvals (CE, Ex, Shipbuilding, Railways). Two different sensor technologies are available, namely thin-film-on-steel (weld-sealed design without O-rings) and thick-film-on-ceramic. Trafag also develops and manufactures products specifically to customer requirements.

Available Technologies:

Thin-film-on-steel

Measurement is effected according to the strain gauge principle. Through the force effect of the sample medium, the strain gauge bridge is deformed, changing its electrical characteristics.

Features:
Very good long-term stability
Ability to endure elevated medium temperatures
Completely weld-sealed sensor system made of stainless steel without   O-rings
Very high resistance to overpressure; ideal for rated values up to 2000 bar


Thick-film-on-ceramic

Measurement is effected according to the strain gauge principle. Through the force effect of the sample medium, the strain gauge bridge is deformed, changing its electrical characteristics.

Features:
Resistant to aggressive media
Ideal for low-pressure ranges
Sealed with an O-ring


Piezo-resistive systems

If a force is applied to a silicone crystal, this will change its specific electrical resistivity. In the piezo-resistive process, pressure is indirectly transferred to the silicone crystal via a diaphragm backfilled with silicone oil.

Features:
Ideal for very low pressure ranges
Large degree of freedom in arrangement of pressure connections (e.g.   front-flush diaphragms)

  COPYRIGHT 2005 ALL RIGHTS RESERVED BIRKETTCONTROLS.COM.AU