Measure ozone in water
Measure ozone concentrations levels from 0-50 mg/L precisely in water. The unit measures ozone concentration with UV light, the sensor has a built-in self-priming suction pump to take in sample water and reference water. This unit is excellent for universities and research departments of companies. The sensor has a possibility to connect a recorder to collect data overtime. Furthermore, it has an ERR output and a "Hi Lo" output.
Ozone has a maximum absorption band near the wavelength of ultraviolet at 253.7 nanometers. A low-pressure mercury lamp light source has an emission line spectrum at 254 nm. By irradiating ozone with this wavelength, the amount of light without ozone gas (I0) and the amount of light with ozone gas (IX) are Lambertian. Lambert law : when an area element is radiating as a result of being illuminated by an external source, the irradiance (energy or photons/time/area) landing on that area element will be proportional to the cosine of the angle between the illuminating source and the normal.
The ozone concentration is obtained from Beer-Lambert law, and compared with a standard device calibrated by the iodine titration method to make a correction and use it as the display value at the end of calibration Beer-Lambert law relates the attenuation of light to the properties of the material through which the light is travelling.
Since the measured ozone concentration is inversly proporational to the gas or water temperature, most units are equipped with a temperature sensor. The temperature reading is used to autocompensate the ozone concentration output.
Polarograph polymeric membrane technology
The theory of this polarograph with polymeric membrane type dissolved ozone monitoring is generally used in the Electro chemistry analysis and has many use cases. Ozone in water consists of ozone ions, and will enter through the polymeric membrane into the working electrode, reacting the ions on its surface. On the counter electrode happens an equivalent reaction of oxidation on the surface, to which the electric current is proportional to the ozone concentration generated.
EL550 UV technology
The EL-550 is an ozone monitor that is intended to be incorporated into equipment, and has been made compact and reasonably-priced by minimizing functions other than analog output. It can be installed on the wall or on the floor to reduce restrictions on installation location.
EL610 UV technology
The EL-610 is a more advanced model ozone monitor than the EL550. The sensor has more functionality and the sensor and the controller are separated which increases the freedom in installation.
ELP-200 polymeric membrane technology
The ELP-200 is generally used for "dirty" water applications as the sensor technology is not influenced by various metallic ions and their conductivity in sample water. The flow cell and controller are separated from eachother making installation easier.
The CX-100 II is the most economical solution to measure dissolved ozone and other dissolved components such as trichloroethylene, tetrachloroethylene, 1.1.1 Trichloroethane, Carbon Tetrachloride, Ammonia (Ammonium ions), Hydrogen Sulfide. The sensor is not based on the UV method described above. The unit is easy to carry as it is battery powered. It can measure accurately water temperatures from 5°C to 35°C or 41°F to 91°F. Acniti recommends the CX-100 II for calibrating the ELP-200.
If you would like to read more about the CX-100 II read the blog post.