NOBO Monitoring COD and ammonia nitrogen sewage water monitoring
COD meter is an intelligent online instrument developed by our company to monitor COD concentration of the water. Many organic substances dissolved in water absorb ultraviolet light. Therefore, by measuring the absorption of these organic substances by ultraviolet light at a wavelength, the total amount of dissolved organic pollutants in water can be accurately measured. The sensor uses two light sources, a 254nm UV light, a 850nm infrared reference light, in a specific algorithm to compensate for the attenuation of the optical path and can eliminate the interference of the suspended solids to a certain extent, so as to provide a more stable and reliable measurement. This product uses RS485 interface to communicate with the digital sensor, high data accuracy, strong anti-interference, can directly control the digital sensor calibration and automatic cleaning time interval.
