red remote electromagnetic flowmeter

Industrial on-line dissolved oxygen meter is an on-line water quality monitoring and control instrument with microprocessor. 

It is widely used in drinking water treatment plants, drinking water distribution networks, swimming pools, water quality treatment projects, sewage treatment and other industrial processes to continuously monitor and control the dissolved oxygen value and temperature value in aqueous solutions.

The oxygen electrode is made of platinum (Pt) as the cathode, Ag/AgCl as the anode, 0.1M potassium chloride (KCl) as the electrolyte, and silicone rubber permeable membrane as the breathable film. When measuring, 0.68V polarization voltage is added between the anode and cathode, oxygen is consumed in the cathode through the pemeable membranes, the oxygen content through the membrane is proportional to the concentration of dissolved oxygen in the water, so the limiting diffusion current between the electrodes is proportional to the concentration of dissolved oxygen in the water, the meter detects this current and is converted into oxygen concentration by calculation. At the same time, the thermistor detects the temperature of the solution and makes temperature compensation to the oxygen concentration.