(Deutsch) Glass-lined Probes

For highest process standards

pH/Redox probe type pH/ORP

The pH/ORP sensor type accurately measures pH and redox value in applications where conventional glass probes are unstable, drift and feature a short service life. The Pfaudler Heavy-Duty Design allows it to be installed in-line directly in the product flow. The wear-resistant, smooth glass-lined layer uses the product flow to keep the surface of the sensor clean while resisting any potential product build-up that may occur.

The pH/ORP probes are available in rod design (with different lengths) and also in ring design.


Find more probes in the Pfaudler Product Selection Guide

Technical data – Product overview

Type pH/ORP / Rod & Ring
Measuring range 0 to +10 pH *
-1,200 to 1,500 mV
Operating temp. 0 to +140 °C ***
Operating pressure -1 to +9 bar ***
Ex. protection II 1/2 G EEx ia IIB T6 or
II 2G EEx ia IIC T6
Dimensions (mm) Rod probe:
L = 300 – 3,200 **
DN = 50 – 200 **
Ring probe:
DN50 / DN80 **
Product benefits – Heavy-Duty Design
– Highly restistant glass layer
– Low maintenance
– No ageing / No drift
– CIP/SIP-compliant
– Self-cleaning

* Depends on temperature
** Other dimensions on request
*** Higher pressure/temperature on request