835 Quick Union Chlorine Sensor

835 Quick Union Chlorine Sensor

Quick-Union Chlorine Sensor

The model 835 free chlorine sensor is accurate, rugged and self-cleaning. The quick-union sensor is recommended for difficult applications which require frequent removal of the sensor for calibration, cleaning or QC checks. The true-union-style threaded fitting locks in the sensor for extra safety and easy removal. The model 835 sensor is a universal version offered in an easy-to-install configuration for insertion or submersion applications.

Model 875-25 Free Available Chlorine Analyzer sample panel

  • Model 835 replacement Chlorine Sensor
  • A1100227  Chlorine sensor renew solution
  • A2104015   Membrane module and fill solution kit
  • A1100233  Electrolyte fill solution
  • A1100225  Zero free chlorine solution

Model 876-25 Total Free Chlorine Analyzer & pH sample panel

  • Model 835-77  replacement Chlorine Sensor
  • Model 625-7-8-17  replacement pH Sensor
  • A2104015  Membrane module and fill solution kit for Chlorine Sensor
  • A1100239  Chlorine sensor fill solution
  • A1100227  Chlorine sensor renew solution
  • A1100225  Zero free chlorine solution

Description

Features

  • Only one sensor needed for all uses
  • Easy to lock in or remove for calibration
  • Rugged body construction from 1″ schedule 80 pipe
  • Fast, accurate and stable response
  • Smooth, broad surface tip, resists biological growth from accumulating on the membrane
  • Open sensor tip has protective lugs to prevent handling damage
  • Factory-mounted membrane, easy to replace in only two minutes
  • Galvanic gold cathode and silver anode battery chemistry is specific to free chlorine. There is no need to compensate for non-chlorine gases.
  • Quick-union design for submersion, screw-in and flow-through applications all with one sensor

IC Controls developed the model 835 quick-union free chlorine sensor with the following benefits:

  • Pop-in membranes! Installation of factory pre-tensioned membrane module works every time with no special operator skills needed. The membrane will not wrinkle or tear.
  • Self-cleaning is achieved with a design that creates a rolling turbulence on the membrane. The durable PVC body, constructed from schedule 80 PVC pipe, is designed to withstand impacts.
  • Air is purged from the cell as membrane module cap is threaded on, resulting in very fast stabilization. Self-regenerating electrolyte maintains consistent free chlorine readings during long operating runs without the need for recharging.
  • Galvanic technology provides an absolute zero (zero current equals zero free chlorine) which provides excellent accuracy at ppm levels. The gold cathode tip is unaffected by sulfides and other contaminants in the waste water treatment process.

Technical Data

Applications & Technical Articles

Reliable Measurement

  • Free available chlorine, HOCl
  • Submersion, insertion or flow
  • Environmental monitoring
  • Process liquids
Download Article

Chlorine Theory and Measurement

Chemical introduction to aqueous chlorine forms and properties; effect of and relation to pH/ORP; summary of free chlorine measurement technologies
Download Article

Application Review

Complete & Submit Questionnaire Now

Customer Reviews

“Everything is working great.”  Just what we like to hear.  This equipment was all purchased and installed in 2011 and has required minimal maintenance and consumables since then.

from a WSPOL Supervisor in a Canadian Base
using a Model 875 Chlorine Analyzer, Model 835 Chlorine Sensor and  AQT1C4 AquaClear  Low Range Turbidity System.
in a Drinking Water application
July 2022

Drawings

For Illustration purposes only

Simple Bypass (side stream) setup

Showing isolation valve for safe sensor maintenance
For Illustration purposes only
Go to Top