Flush Sanitary Vacuum Sensors

Flush-mount transmitters of the PL and PM series are used for reliable hydrostatic level measurement and system pressure measurement in pipes. Flush-mount installation in the tank or vessel wall ensures reliable cleaning and sterilisation in the process. The compact stainless steel housing is potted, offering optimum protection against ingress of moisture and aggressive media. Thanks to a broad selection of process adapters, the sensors can be used in nearly all industrial applications.
Remote parameter setting of the units is possible. The measuring range is defined by setting the zero point and the span.

Overload-resistant ceramic measuring cell
Resistant to pressure peaks and vacuum
Fast installation and maintenance-free operation
Scalable analog output
Intuitive, user-friendly handling

Description

The most important element of the ceramic capacitive technology is the ceramic (Al₂O₃) measuring cell. After assembly, the ceramic cell element resembles a plate capacitor with a reference electrode and a measuring electrode placed 15 µm apart. The capacitance is inversely proportional to the distance between the electrodes. As pressure is applied, the distance changes by a small value and the capacitance changes proportionately. This signal is then converted into pressure by a microprocessor.

Robust, direct sensing measurement technology
Eliminates possibility of contamination from diaphragm fill fluid
Long-term stability of ceramic cell design does not fatigue like stainless steel
Internal support construction creates very high pressure ratings
Ceramic cell is more resistant to abrasion, dents or dings that can create measurement offsets
Highest overload pressure rating, especially with dynamic pressure peaks