The COD351 series of online digital sensors developed and produced by Daruifuno adopt the principle of UV absorption method and are suitable for online continuous monitoring of water quality chemical oxygen demand values. So why does COD monitoring use 254nm ultraviolet light source? First of all, organic substances containing aromatic rings and unsaturated bonds have characteristic absorption of ultraviolet light of specific wavelengths. The ultraviolet absorption method uses this characteristic of organic matter to determine the concentration of organic matter in water by measuring the ultraviolet absorbance of the sample. Secondly, the measurement light source of the UV absorption COD sensor is usually 254nm UV light because the absorption values of many organic substances are relatively stable at this wavelength. Suspended solids and colloidal substances in the sample will also absorb a certain amount of ultraviolet light, affecting the accuracy of the measurement results. Theref…

Similar

RS485 4 Channels Multi Parameter Water Quality Meter
Drinking water Amperometric chlorine probe 4-20mA
pH Electrode ISE Online Ammonia Nitrogen Sensors
High Precision Online Toroidal Conductivity Sensor | ASC200
Online Dissolved Oxygen Sensor for Wastewater
Optical Dissolved Oxygen Analyzer | Meter
Online automatic pH ORP controller for water plants
OLTU600 Online Laser Turbidity Sensor for Circulating Cooling Water
Drinking Water Turbidity Sensor & Probe - OPTU850Z
Sedimentation Method and Sludge Concentration Sensor
Automatic Dosing Online pH Meter for RO System
Online Analog PH Sensor for Sewage Water

Suzhou Delfino Environmental Technology Co., Ltd.

Suzhou Delfino Environmental Technology Co., Ltd. is a professional manufacturer of water analysis i…

Copyrights © 2025 astszcmparts.com All Rights.Reserved .