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Online Low-range Turbidity Analyzer with LCD Display for Water Plants
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Online Low-range Turbidity Analyzer with LCD Display for Water Plants

The Online Low-Range Turbidity Analyzer consists mainly of an instrument and a sensor. The instrument is equipped with an LCD screen and can automatically identify measured parameters. The low-range turbidity sensor guides parallel light from the light source downward into the water sample in the sensor. The light is scattered by suspended particles in the water sample, and the 90-degree scattered light (relative to the incident angle) is received by a silicon photocell receiver immersed in the water sample. The turbidity value of the water sample is obtained by calculating the relationship between the light and the incident light beam. Applications include online turbidity monitoring of pre-filtration water, post-filtration water, and finished water in water treatment plants, as well as in direct-drinking water systems. It is also used for online turbidity monitoring in various industrial circulating cooling water, filtered effluent, and reclaimed water reuse systems.
Model W519-DTU500
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Detail

Application Fields

This product is widely applied to the online turbidity monitoring of water before filtration, after filtration, and finished water in water treatment plants, as well as in direct - drinking water systems. It is also commonly used for the online turbidity monitoring in various industrial production circulating cooling water, filtered effluent, and reclaimed water reuse systems.

Functional features

  1. Dual - channel access, configurable according to requirements.

  2. Achieves plug - and - play for sensors, enabling rapid and convenient electrode installation and replacement.

  3. The operation interface is simple, reducing the possibility of operational errors and ensuring reliable results.

  4. Features visual operation on the LCD screen, with a rich and comprehensive interface.

  5. Equipped with multiple data output methods such as 4 - 20mA and MODBUS RS485.

  6. The transmitter supports wall - mounted installation / panel - mounted installation / pipe - clip installation.

  7. Crafted from aluminum alloy, it offers high strength, oxidation resistance, and corrosion resistance, enhancing its texture and market attractiveness.

Technical Parameters


Specification
Detailed information
Measurement
Measurement Parameters
Low range turbidity
Measuring Ranges
0.01-100 NTU
Resolution
0.1~0.1NTU(depending on the measuring range)
Accuracy
When the turbidity value is in the range of 0.001 - 40 NTU, the tolerance is ±2% of the reading or ±0.015 NTU, take the greater one. When the turbidity value is in the range of 40 - 100 NTU, the tolerance is ±5% of the reading.
Repeatability
±2%
Resolution
0.001 - 0.1 NTU, depending on different measurement ranges.
Water Sample Flow Rate
300 mL/min ≤ X ≤ 700 mL/min
Pipe Fittings
Sampling inlet: 1/4 NPT
Discharge outlet: 1/2 NPT
Main material of the sensor
Body: ABS + SUS316L
Sealing parts: Nitrile rubber
Cable: PUR
Storage temperture
-15°C to 60°C
Operating Temperature
0°C to 45°C (without freezing)
Weight
2.1KG
Protection level
IP65 (for indoor use)
Cable length
The standard length is 3m. For the LED version, it can be extended up to 30 meters at most.
Power consumption
The LED - version sensor has a low power consumption of 3.5W.
Electrical
Display
LCD liquid - crystal screen
Power supply
105~235VAC,50±1Hz/24VDC±5%(DC is optional)
Power
≤12W(including the sensor)
Analog Output
Two ways of analog outputs (load resistance < 500Ω)
Digital output
RS485 interface, MODBUS RTU protocol
Relay output
Three-way relay   5A 250VAC,5A 30VDC
Physical prosperities
Material

Bottom shell: Cast aluminum with plastic spray coating                                 

Top cover: PA66 + 30GF with paint coating

Size
145*145*174mm(H*W*D)
Weight
1.8kg(Not including the sensor)
Waterway interface
2-inch or 3-inch hose (custom made)
Ambient performance
Flow rate
In flow chamber:250~500mL/min
Protection level
IP65
Water pressure
≤6 bar(matching a pressure - reducing valve with the instrument)
Working humidity
<90%,no condensation
Working temperature
Instrument:-15℃~50℃;senseor water temperature:0.1℃~45℃(0.1°C to 70°C for special applications)
Storage temperature
Instrument:-20°C~60°C;sensor:0.1°C~55°C


FAQ – Frequently Asked Questions


1. Where are your products manufactured?

Our products are proudly designed and manufactured in China, following international quality standards and certified processes.


2. Can you provide OEM/ODM services for international clients?

Yes, we offer customized solutions and private labeling to meet your brand’s needs worldwide.


3. Are your products compliant with international safety and quality standards?

Absolutely. Our products are tested to meet CE, RoHS, and other international certifications.


4. How do you handle shipping and delivery for overseas orders?

We cooperate with major international couriers to ensure fast and reliable delivery to your location.


5. Can I get product samples before placing a large order?

Yes, we provide samples so you can evaluate product quality before committing to bulk orders.


6. What is the typical lead time for production and delivery?

For standard products, we usually ship within 5–7 days after order confirmation. Customized products may take slightly longer.


7. How do you support clients after the purchase?

We offer 24/7 technical support, product guidance, and warranty service to ensure smooth operation.


8. Do you provide support for international clients after purchase?

Yes, we offer remote technical assistance, manuals in English, and prompt solutions to any issues, ensuring smooth use worldwide.


9. How can I place an order if I am located overseas?

You can contact our sales team directly via email or website inquiry. We provide professional guidance throughout the ordering process.


10. Why should I choose your company over other suppliers in China?

We combine over 30 years of manufacturing experience, advanced technology, strict quality control,

and global customer service to deliver reliable, high-quality solutions.


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