Introduction to Y531-A self-cleaning chromaticity sensor
The new color sensor from Yushan adopts the absorption method measurement principle, complies with ISO design standards, customizes optical components, has a small size, is easy to install and maintain, does not require reagents, is pollution-free, and is more economical and environmentally friendly. The sensor is equipped with an automatic cleaning device, which compensates for turbidity interference automatically, and has excellent stability even for long-term online water quality monitoring.
Sensor features:
Digital sensor, RS-485 output, MODBUS protocol;
Equipped with an automatic cleaning brush to prevent contamination and eliminate bubbles;
Automatically compensating for turbidity interference, with excellent testing performance;
Built in calibration parameters, precisely calibrated at the factory, can be directly installed and used.

Y531-A self-cleaning chromaticity sensor parameters
product name |
Chromaticity sensor |
model |
Y531-A |
measuring principle |
Absorption method |
range |
0-500 Hazen |
Linearity |
R²>0.999 |
temperature range |
0-50℃ |
Maximum pressure |
3bar |
protection grade |
IP68 |
interface |
RS-485, MODBUS protocol |
assemble |
Supporting installation board, immersion installation |
power |
0.1W (without turning the brush) 0.8W (when turning the brush); Suggested power supply: DC 9-24V,>1A |
size |
Φ46mm*189.5mm |
Length |
10 meters (default), customizable |
calibration |
1 or 2 point calibration |
Housing material |
titanium alloy |
The above technical parameters are all data obtained under laboratory standard solution environment; The lifespan and maintenance calibration frequency of sensors are related to the actual on-site working conditions.※
Suzhou Yushan Sensing Technology Co., Ltd


Y531-A self-cleaning color sensor. pdf