Pressure switch for hygienic processes up to 25 bar

Precont PS4LM

Pressure switch for hygienic pressure monitoring in gases, vapors, liquids and dusts, with -1…25 bar relative or 0…25 bar absolute ranges, -20…+150 °C process temperature, 2x PNP and optional 4…20 mA output via M12.

Introduction

Hygienic processes need pressure monitoring that stays reliable with difficult media and frequent cleaning cycles. This pressure switch monitors, controls and continuously measures pressure in gases, vapors, liquids and dusts, including viscous, pasty, adhesive, crystallizing, particle-laden or contaminated media.
 
The front-flush welded membrane supports process-integrated cleaning of the wetted measuring surface. With EHEDG-conforming hygienic process connections, stainless steel wetted parts and suitability for CIP/SIP cleaning conditions, it fits demanding applications in food and beverage, pharmaceutical production, biotechnology and sterile process technology.
 
On site, the device keeps operation practical. The rotatable housing and display support readable installation positions, while the bright LED display, function LED and 3-key operation simplify setup. Measuring spans from 100 mbar to 25 bar, accuracy ≤ ±0.5% FS, ingress protection (IP65/IP67) and 2x PNP plus optional 4…20 mA output make it a flexible choice for critical pressure tasks.

Hygienic process fit
Hygienic process fit
Front-flush 316L membrane and EHEDG-conforming connections support sterile process design.
Wide pressure cover
Wide pressure cover
Select relative -1…25 bar or absolute 0…25 bar ranges for different process duties.
Clear local control
Clear local control
Rotatable housing, bright LED display and 3-key operation simplify adjustment on site.
Robust in washdown
Robust in washdown
Stainless steel housing with ingress protection (IP65/IP67) fits demanding process areas.
Process heat ready
Process heat ready
Handles -20…+150 °C process temperatures in hygienic applications.
Accurate switching
Accurate switching
Accuracy ≤ ±0.5% FS supports dependable pressure monitoring and control.

Features

Pressure monitoring

The device monitors, controls and continuously measures pressure in gases, vapors, liquids and dusts.

Output configuration

Variants provide PNP switching outputs and a 4…20 mA analog output, including a Desina option in the order code.

Process connection options

Hygienic process adapters include ISO 228-1 front-flush thread, DIN 11851 milk pipe couplings, Varivent® and DRD.

Materials and seals

Wetted parts use stainless steel 1.4535/316L or 1.4571/316L, with FPM or EPDM process seals listed in the order code.

Electrical connection

The electrical interface uses an M12 connector with standard cable wiring for the available output variants.