Skip to main content

Chlorine dioxide Analyzer Principle

 Chlorine dioxide measurement

Chlorine dioxide (ClO2) is an instable, non-storable, toxic gas with a characteristic scent. The molecule consists of one chlorine atom and two oxygen atoms – represented in the chemical formula ClO2. It is very reactive. To avoid the risk of spontaneous explosions of gaseous chlorine dioxide or concentrated solutions, it is generally handled in dilution with low concentrations. ClO2 is soluble in water, but tends to evaporate quickly. Typically it is prepared on site, for example from hydrochloric acid and sodium chlorite. The procedure provides solutions with approx. 2 g/l ClO2 that can be safely handled and stored for several days.

Image Credits : krohne

Sensor Parts :

Reference electrode
Applied chlorine dioxide specific potential
Current needed to maintain the constant potential
Counter electrode
Measuring electrode
The disinfection effect of ClO2 is due to the transfer of oxygen instead of chlorine, so that no chlorinated byproducts are formed. ClO2 is used as disinfectant against biofilm, bacteria, spores, and viruses. Today it is believed that the molecule´s unpaired electron is transferred to the DNA of the microorganism which cracks and causes cell necrosis. ClO2 has a long-term effect of several days. In contrast to chlorine, the disinfection strength of ClO2 does not depend on pH, and neither does the measurement show a pH influence in the range of pH 6 to pH 9.

ClO2 is measured potentiostatic with measuring and counter electrodes of pure gold and an Ag/AgCl reference. The measurement shows high selectivity towards ClO2. A precise potential is built up between the measuring and the reference electrode. The measuring electrode starts polarising, i.e. ions collect close to the electrode to neutralise the electrical field. ClO2 molecules that hit the surface take a defined portion of the charge with them. The controller measures the potential between measuring and reference electrode and readjusts the charge on the electrode surface. The current needed to maintain a constant potential is directly correlated to the dissolved chlorine dioxide concentration in the measuring medium.

Source : krohne



Labels:

Comments

  1. William JessieJanuary 20, 2021 at 5:54 AM

    This information is meaningful and magnificent which you have shared here about the-sodium chlorite-. I am impressed by the details that you have shared in this post and It reveals how nicely you understand this subject. I would like to thanks for sharing this article here.sodium chlorite England

    ReplyDelete
  2. AtlantiswpsFebruary 14, 2021 at 8:34 PM

    Thank you for putting all these strategies into a very readable place. It shows your ability and great skills. keep sharing such articles in future.
    buy sodium chlorite uk

    ReplyDelete
  3. wpspurewaterMarch 17, 2021 at 8:34 AM

    You have worked nicely with your insights that makes our work easy.Buy sodium chlorite 22.4% The information you have provided is really factual and significant for us. Keep sharing these types of article, Thank you.

    ReplyDelete
  4. adextermagMarch 23, 2021 at 10:01 PM

    I would like to thank you for posting such an informative post about Chlorine dioxide measurement. I got some useful knowledge from this post. Thanks for posting it. Keep it up. Magnet manufacturer

    ReplyDelete
  5. Alvin EvansAugust 29, 2021 at 11:32 PM

    I liked your work and the way in which you have shared this article here. It is a beneficial and helpful article for us. Thanks for sharing an article like this. Blown Glass

    ReplyDelete

Post a Comment

Popular posts from this blog

PLC Program for Mixing Tank

 Create a ladder diagram for controlling a batch mixing process. Implement a PLC program for mixing tank or Mixing Process using PLC Ladder Logic. PLC Program for Mixing Tank Fig : Mixing tank A tank is used to mix two liquids. The required control circuit operates as follows: A. When the START button is pressed, solenoids A and B energize. This permits the two liquids to begin filling the tank. B. When the tank is filled, the float switch trips. This de-energizes solenoids A and B and starts the motor used to mix the liquids together. C. The motor is permitted to run for 1 minute. After 1 minute has elapsed, the motor turns off and solenoid C energizes to drain the tank. D. When the tank is empty, the float switch de- energizes solenoid C. E. A STOP button can be used to stop the process at any point. F. If the motor becomes overloaded, the action of the entire circuit will stop. G. Once the circuit has been energized, it will continue to operate until it is manually stopped. Solution : A
1 comment
Read more

What is Relay? How it Works? Types, Applications, Testing

 We use relays for a wide range of applications such as home automation, cars and bikes (automobiles), industrial applications, DIY Projects, test and measurement equipment, and many more. But what is Relay? How a Relay Works? What are the Applications of Relays? Let us explore more about relays in this guide. What is a Relay? A Relay is a simple electromechanical switch. While we use normal switches to close or open a circuit manually, a Relay is also a switch that connects or disconnects two circuits. But instead of a manual operation, a relay uses an electrical signal to control an electromagnet, which in turn connects or disconnects another circuit. Relays can be of different types like electromechanical, solid state. Electromechanical relays are frequently used. Let us see the internal parts of this relay before knowing about it working. Although many different types of relay were present, their working is same. Every electromechanical relay consists of an consists of an Electroma
Post a Comment
Read more