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UV254 COD/TOC Sensor
Many organic compounds dissolved in water absorb ultraviolet light. Therefore, by measuring their UV absorption at 254 nm, it is possible to measure the total amount of organic pollutants present in the water. The UV254 online COD/TOC analyzer uses two light sources: a 254 nm UV source and an 880 nm infrared source. This automatically compensates for optical attenuation and turbidity, for more stable and reliable measurements.
Features
Principle of Measurement
Dual beam absorbance method: 254 nm (COD detection),
365 nm reference light (eliminates interference from suspended solids)
Principle of Measurement
Simultaneous measurement of CODCr, TOC, turbidity, MES (TSS) and temperature.
Parameters such as BOD and CODMN can be deduced.
Optical Measurement Path
1mm
Measuring Range
CODCr: 0-3000 mg/L; TOC: 0-1500 mg/L (potassium hydrogen phthalate solution, KHP)
Turbidity: 0-3000 NTU
Precision
CODCr and TOC: 5%; Turbidity accuracy: 3%
Response Time
1 second
Optical Window Cleaning Method
Automatic cleaning brush. The cleaning interval can be set freely.
Sensor Compensation
Supports automatic temperature and turbidity compensation
Protection Index
IP68. Maximum pressure: 1 bar
Calibration Method
1 or 2 points
Communication
RS485 (Modbus RTU)
Supply Voltage
12V DC ±5%
Electricity Consumption
≤0.6W (excluding cleaning)
Cable Length
10 m (customizable)
Case Material
POM and 316L stainless steel
Installation Method
Immersion installation
Probe Dimensions (D × L)
Φ50 mm × 214 mm
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