Flush Pressure Sanitary Level Sensors

The flush pressure sensors of the PI27/PI28 series with full stainless steel housing are designed for use in process technology. They are resistant to high-pressure cleaning with aggressive cleaning agents. Their high protection rating IP 69K, a hygienic design and a high temperature resistance qualify the sensors for use in the food and pharmaceutical industries.
The units feature two switching outputs which can be programmed as normally open or normally closed. For output of the measured value, one switching output can also be configured as a scalable analog output.
Parameter setting is effected via the buttons on the sensor. The highly visible display, combined with a user-friendly interface, enables fast and easy set-up.
The sensor can also be configured via IO-Link, e.g. using a USB interface. The sensor can also be configured via IO-Link, e.g. using a USB interface. The LR Device software is used to visualize, transfer and archive parameter sets.

High overall accuracy and electronic temperature compensation
Programmable analog and switching output
Hygienic, flush design
Aseptoflex Vario – G 1 process connection with four sealing options
High temperature resistance

Description

Ceramic capacitive

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 0.01 mm 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