ADU3500 Pressure-resistant Turbidity Sensor for data center

The Pressure-Compensated Turbidity Sensor is designed for online monitoring of drinking water quality. It features an ultra-low turbidity detection limit, high-precision measurement, fast response speed, and long-term maintenance-free equipment. It can be widely used in online turbidity monitoring of tap water, secondary water supply, pipe network terminal water, direct drinking water, membrane filtered water, swimming pools, surface water, etc.

Characteristics

Power Supply:(9~28)VDC

Power Consumption:≤ 5W

Range:0 - 1NTU / 0 - 20 NTU / 0-100 NTU / 0-2000 NTU

Zero Drift:≤ 1.5%

Display Stability:≤ 1.5%

Accuracy:

(0~ 1) NTU /(0~20)NTU/(0~100)NTU: 2% or ±0.02NTU

(0~2000)NTU: 10% or ±0.5NTU

Parameters

Power Supply	(9~28)VDC
Power Consumption	≤ 5W
Detection Method	90°Light Scattering (laser light source)
Light Source	660nm laser
Range	0 - 1NTU / 0 - 20 NTU / 0-100 NTU / 0-2000 NTU
Detection Limit	0.005 NTU
Zero Drift	≤ 1.5%
Display Stability	≤ 1.5%
Accuracy	(0~ 1) NTU /(0~20)NTU/(0~100)NTU: 2% or ±0.02NTU (whichever is greater) (0~2000)NTU: 10% or ±0.5NTU (whichever is greater) (Based on formazine primary standard solution at 25°C)
Repeatability	1%(Based on Formazin standard solution at 25°C)
Response Time (T90)	≤ 120 seconds
Operating Temperature	-5 to 45 °C (no freezing)
Inlet Flow Rate	100 - 1000 mL/min (recommended 500 mL/min)
Withstand Pressure	≤ 0.6 MPa
Transmitter Output	(4 ~ 20) mA can be set to the corresponding parameter measurement range
Communication Output	RS485 output, Modbus-RTU

ADU3500 Pressure-resistant Turbidity Sensor for data center

Principle

The turbidity sensor operates based on the 90° laser light scattering method. A laser beam is emitted from the air into the water at a perpendicular angle to the water surface. Suspended particles in the water scatter the laser light, and a sensor positioned at a 90° angle to the incident beam detects the intensity of the scattered light. This intensity is then converted into a turbidity value using a pre-calibrated reference table.