425 Quick Union Conductivity Sensor

/425 Quick Union Conductivity Sensor

425 Quick Union Conductivity Sensor

Quick-Union Conductivity Sensor

The model 425 quick-union conductivity sensor is a universal version offered in an easy-to-install configuration for insertion or submersion applications. The union-style threaded fitting locks in the electrode for extra safety and very easy removal.


Recommended for applications where frequent removal in tough applications for calibration, cleaning or Q.C. checks is required.


  • Only one conductivity sensor needed for all uses
  • Low maintenance
  • Easy to calibrate
  • Rapid and accurate response
  • Automatically temperature compensated
  • Medium temperatures and pressures
  • IC Controls factory-certified calibration
  • Constructed of Hastelloy “C” and CPVC with PVDF and TFE available
  • Quick-union design handles submersion, screw-in and flow-through applications all with one interchangeable sensor
Selection Guide
User Manual
Engineering Specifications


For Reliable Conductivity Measurement

  • Environmental monitoring
  • Medium-conductivity applications
  • Corrosive and chemical problems
  • Process liquids
Download Article

Conductivity Theory and Measurement

Conductivity definition, measuring techniques, etc
Download Article


Download Questionnaire (PDF)

Complete & Submit Questionnaire Now

Installation Drawing

Quick Connect Flowcell & Insertion Fitting

A2300090 = option -69 on model 425 conductivity sensor, -20 on model 625 pH sensor, and model 825 ppm DO sensor.
Installation Drawing