Function
When subjected to pressure the Bourdon tube is defl ected laterally. The degree of defl ection is converted into a proportional electrical measurement using a contact-free differential transformer. At the output of an integrated amplifi er there is an available memorised current of 0 (4) to 20 mA or a voltage of 0 -10 V. The minus poles of the emergency voltage (24 VDC) and the output signals are connected with one another.
Design
Together with the pressure measuring element (Bourdon tube), the inductive tapping system and the downstream amplifier make up one compact unit. The chosen construction makes it possible to closely align the components in such a manner that access to pressure connections, cable entry points and terminals is guaranteed.
The casing is made of saltwater resistant aluminium alloy.
Electricity is connected to various screwed cable glands.
Assembly tips
Despite a high degree of vibration resistance of the pressure transmitter as a whole, the vibration effect in the direction of the pressure-dependent movement of the measuring element shows a maximum. In order to avoid this direction when for example installing in diesel engines, it is marked with an arrow in the dimensional drawing.