Ozone Monitor Technology Series – Electrochemical Cell

Posted by Jamie Hansmann on February 11, 2013 under Ozone Safety | Be the First to Comment

There are three primary technologies used to monitor and measure ozone:  Electrochemical cells, HMOS / GSS, and UV.  Today we will be giving a brief overview of Electrochemical sensors and their use.

When ozone contacts an electrochemical cell, it causes electrons to flow.  This electric current varies in proportion to the amount of ozone present, so the monitor can interpret this signal as ozone concentration and display or output those values for us.

Due to their construction, electrochemical ozone monitors have several properties that make them unique.  One of these is long battery life.  Due to the low power consumption of their sensors, they have the longest battery life of any ozone monitoring technology.

Another benefit they share is a resistance to interference from other gases.  Electrochemical cells are each built with materials that are designed to be as specific to ozone as possible.  While not as good as UV technology in this regard, there are certain situations where they are a necessity.

One downside that these sensors have in common, however, is their limited sensor life.  Electrochemical cells will deplete over time even while in storage, so keeping a regular replacement schedule is advised.

Common Applications:

  • Portable ozone safety monitoring
  • Ozone monitoring & control, especially if interfering gases are a concern

Here are a few monitors offered by Ozone Solutions that utilize Electrochemical Sensor technology:

GAXT-G-DL GAXT-D-DL Ozone Detector
  • A/V & Vibrate Alarms
  • Small, Light Ruggedized design
  • Long battery life
  • Consider: Portable. Range: 0 – 1 ppm. Display: LCD. Alarm: Audible, Visual, Vibrate. Datalogging: Optional.
F12 F12 Main Image
  • Rugged NEMA wall-mount enclosure
  • Easy sensor replacement & maintenance
  • Several add-on options available
  • Consider: Wall-Mount. Range: 0 – 20 ppm. Display: LCD. Alarm: Optional. Outputs: Multiple.
A14-A11 A14-A11 Remote Ozone Monitor
  • Configurable Solution
  • Remote sensor via cable
  • Multi-Channel configurations available (Request a quote)
  • Consider: Wall-Mount. Range: Multiple. Display: LCD. Alarm: Yes. Outputs: Multiple.
C16 C16 Main Image
  • Active sampling via pump
  • Wand allows leak detection in tight spaces
  • Built-in backup battery
  • Built-in datalogging
  • Consider: Portable. Range: Multiple. Display: LCD. Alarm: Audible. Datalogging: Yes.


To find out more about how Electrochemical sensor cells compare to UV and HMOS / GSS, visit our Ozone Monitor Technology Comparison Page!

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