DG7-OZ: Dissolved Ozone

The DG7-OZ is a panel-mount, ready-to-use dissolved Ozone (O3) sensor. It provides several measurement ranges to accommodate various applications: 0 ~ 2 ppm for disinfection and 0 ~ 20 ppm for oxidation and bleaching.
Ozone is a colorless to pale blue gas, when in low concentrations; it gives off an irritating acidic odor.
Ozone is a strong oxidizer, stronger than chlorine and chlorine dioxide.
It reacts quickly, disintegrates into oxygen gas, and increases the amount of oxygen in water when applied to water treatment.

Ozone is widely used in drinking water and waste water industries.
In the processing of drinking water, it works as an oxidizer that removes metals from well water, and gets rid of organics, odors and color from surface water.
For waste water treatment, Ozone serves as a strong disinfectant in cooling towers as well as in municipal waste water treatment plants.
Unlike many chlorine based products, Ozone is an effective bactericide that simply decomposes into oxygen gas without forming any harmful Disinfection By-Products (DBP) or residual in the water.
The harmful residual in water treatment is common to most chlorine chemistries, and it has to be removed from the treated water.

Amperometric Ozone sensor is flow sensitive.
To make the measurement flow independent, it requires a minimum flow speed of 0.5 ft/sec.
A “Constant-head” Flow-control Device (CFD) maintains an optimum flow that passes over the sensor over a wide range of incoming sample flow rates.
The minimum flow required for the CFD is 10 gal/hr and the maximum is 80 gal/hr when a sample drains at a normal atmospheric pressure.