Send Message

UV Type Chemical Oxygen Demand Sensor RS485 , online Bod Cod Meter

Basic Information
Place of Origin: China
Brand Name: Desun Uniwill
Model Number: DS-500
Minimum Order Quantity: 0~100 pcs
Price: $1000.00 - $3000.00/ Piece
Packaging Details: Carton packaging
Delivery Time: 7~ 15 working days
Payment Terms: L/C, D/A, D/P, T/T
Supply Ability: 0~1000 pcs
Detail Information
Model: DS503(1mm Gap) COD Range: 2.5 To 3000 Mg / L
BOD Range: 0~1000 Mg / L Power Supply: 12VDC +/-5%
Output Signal: RS485 / Modbus Accuracy: 0.01mg/L COD
Calibration: 1 Or 2 Point Calibration Self-cleaning Brush: COD Range Over 2000, No Self-cleaning Brush
High Light:

UV Chemical Oxygen Demand Sensor


Chemical Oxygen Demand Sensor RS485


Online Bod Cod Meter

Product Description

UV Type COD BOD TOD Water Probe Online Chemical Oxygen Demand Analyzer sewage treatment plant



COD sensor is a new generation of environmental protection COD/ BOD sensor, no reagent, no pollution, more economic and environmental protection. Small size, easy to install, and can monitor water quality online. Turbidity interference automatic compensation, with automatic cleaning device, even long-term monitoring also has good stability.

Measuring principle

Many organic substances disclosed in water will absorb UV light. Therefore, the total amount of organic pollutants in water can be measured by measuring the absorption of these organic substances by UV light with a wavelength of 254 nm, which can automatically compensate for optical path attenuation and turbidity effects, resulting in more stable and reliable measurement values.

Technical parameter

Item Parameters Price
Model Measuring range Application field USD



DS501(6 mm gap)

COD 0.75 to 500 mg / L

BOD 0~200 mg / L



Tap water,

Sewage treatment plant outlet

natural waters






DS502(1mm gap)

COD 2.5 to 1000 mg / L

BOD 0~500 mg / L



Industrial process control,Raw water





DS503(1mm gap)

COD 2.5 to 3000 mg / L

BOD 0~1000 mg / L


Industrial process control, Wastewater treatment inlet




Power supply 12VDC +/-5%
Output signal RS485 / Modbus
Accuracy 0.01mg/L COD
Calibration 1 or 2 point calibration
Self-cleaning brush COD range over 2000, no self-cleaning brush





















Common problem


Error Possible causes Solutions
Unstable reading Connection failure Reconnect the controller and cables
Cable failure Please contact us
Measured values are too high, too low, or the values remain unstable The sensor measurement window is blocked Cleaning surface










Quality assurance


The online COD warranty period is 1 year from the delivery date.

If the product is found to be faulty during the warranty period, our company promises to repair or replace the faulty product free of charge, or return the order for the faulty product to the user after deducting the first shipping fee. Repaired or replaced products will only enjoy the remaining warranty period.


UV Type Chemical Oxygen Demand Sensor RS485 , online Bod Cod Meter 0


Contact Details

Phone Number : +86 181 8242 9986

WhatsApp : +8618182429986