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COD Senser - Y551

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• Modbus RS-485 output for easy system integration
• Programmable auto-cleaning wiper
• No chemicals, direct UV254 spectral absorption measurement
• Proven UVC LED technology, long lifetime, stable and instant measurement
• Measurement of SAC、COD、TOC, and BOD
• Advanced turbidity compensation algorithm

Model Number: Y551
Data Sheet:

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Product Specification

Y551 UV254 COD Prob:

Yosemite Y551 UV254 probe features highly reliable UVC LED for light absorption measurement. This proven technology provides reliable and accurate analysis of organic pollutants for water quality monitoring at low cost and low maintenance. With rugged design, and integrated turbidity compensation, it is an excellent solution for continuous monitoring of source water, surface water, municipal and industrial wastewaters.

Y551 Features:

• Modbus RS-485 output for easy system integration

• Programmable auto-cleaning wiper

• No chemicals, direct UV254 spectral absorption measurement

• Proven UVC LED technology, long lifetime, stable and instant measurement

• Measurement of SAC、COD、TOC, and BOD

• Advanced turbidity compensation algorithm

Y551 Technical Parameters：

Item	parameter
Interface	Support RS-485， MODBUS protocols
Range	COD 0.75 to 370mg/L equiv. KHP TOC 0.3 to 150mg/L equiv. KHP
Resolution	0.01mg/L COD
Temperature Accuracy	+5 ~ 45℃
Housing IP Rating	IP68
Maximum pressure	1 bar
User Calibration	one or two points
Power Requirements	DC 12V +/-5%，current<50mA(without wiper)
Sensor OD	50 mm
Sensor Length	214 mm
Cable Length	10m (default)
Body Materials	POM and 316L