Analog conductivity sensor - Condumax CLS15


Conductive conductivity sensor for standard

applications in pure and ultrapure water


Condumax CLS15 is the ideal choice for conductivity measurement in 
low measuring ranges. It performs reliably and accurately in a wide range
of applications - even in hazardous areas. Designed for low maintenance
and a long operating life, the sensor offers real value for money.


  • Reliable and accurate measuring values at low conductivities

  • Easy to clean thanks to polished measuring surfaces

  • Sterilizable

  • Robust design for high durability

  • Different cell constants provide a wide measuring range

  • Quality certificate stating the individual cell constant


Field of application

Condumax CLS15 measures conductivity in pure and ultrapure water applications for the monitoring and control of:

  • Ion exchangers

  • Reverse osmosis

  • Cooling water

  • Distillation

  • Chip cleaning

The sensor can be used in power plants for:

  • Degassed conductivity

  • pH measurement with differential conductivity

With its international explosion protection approvals, such as ATEX and FM, the sensor is suitable for hazardous area use.

Features and specifications


Measuring Principle Conductive
Application Water, power plant, pharmaceuticals, process
Characteristic 2-electrode conductivity cell for pure and ultrapure water
Measurement range k=0,01: 0-20 µS/cm 
k=0,1: 0-200 µS/cm
Measuring principle Conductive conductivity cell with polished stainless steel electrodes
Design 2-electrode conductivity sensor with coaxially arranged electrodes, electropolished
Material Electrode: 1.4435
Electrode shaft: PES
Dimension Electrode diameter: 16 mm 
(0.62 inch)
Electrode length: appr. 55 mm 
(2.14 inch)
Process temperature max. 130°C (150°C / 30 min.)
(max. 266°F (302°F/30 min.)
Process pressure max. 12 bar at 20°C
(174 psi at 68°F)
temperature sensor Pt100
Ex certification ATEX
Connection Process connection: 1/2" NPT, 3/4" NPT, 1 1/2" Clamp 
cable : 4-pole SXP connector or fixed cable
Ingres protection IP67