12 years instrument development manufacturer.

  • Products Details

Shenzhen Wanyi Technology Co., Ltd. comes here today with the great news that we have successfully developed Negative oxygen ion detector, radiation detector, nuclear radiation sensor probe, online water quality monitoring system, water quality monitoring sensor, gas detector, outdoor air quality monitoring system.It is a kind of new product made by state-of-the-art technologies. Shenzhen Wanyi Technology Co., Ltd. is dedicated to ensuring that you receive a top class service, every time. Shenzhen Wanyi Technology Co., Ltd. adhere to the corporate philosophy of 'people orientation' and always advocate honesty, innovation, and fairness. We hope to occupy an important position in the industry and become one of the most leading brands in the future.

Warranty:1 yearCustomized support:OEM, ODM, OBM
Place of Origin:shenzhenBrand Name:KAINAFU
Measuring principle:Dual optical path 254nm and 365nmMeasuring range:0.5-100,500mg/L
Protection level:IP68Maximum pressure:1bar
powered by:DC12V+/-5%, current <50mA (without cleaning brush)Material:POM and 316L stainless steel
Data output:RS485size:55mm diameter and 175mm length

Product Description

     The KNF108A COD sensor adopts 254nm and 365nm dual-channel light sources, which can automatically correct the interference of suspended substances, with automatic temperature compensation, so as to achieve more stable and reliable measurement values, without reagents, no secondary pollution, and more economical and environmentally friendly. It can continuously monitor water quality online and automatically compensate for turbidity interference. With an automatic cleaning device, it has good stability even for long-term monitoring.


1.With automatic temperature compensation.
2.Output standard Rs485 digital signal. It is convenient to connect to third-party equipment such as PLC, DCS, industrial control computer, paperless recording instrument or touch screen.
3.Parameter setting is more convenient and quicker. The calibration function can provide a simple and quick calibration method.
4.It can be equipped with the real-time data transmission of the Internet of Things cloud platform to allow you to obtain timely and accurate data for monitoring water bodies.

Technical index

Measuring principle Dual optical path 254nm and 365nm  Measuring range 0.5-100,500mg/L
 Precision  <5%   Resolution  0.01mg/L 
 Protection level  IP68  Maximum pressure  1bar
 powered by  DC12V+/-5%, current <50mA (without cleaning brush)  Material  POM and 316L stainless steel
 size  55mm diameter and 175mm length  cable length  Standard 5 meters


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Packaging & Shipping

KNF-108A uv254 cod sensorKNF-108A uv254 cod sensorKNF-108A uv254 cod sensor

Company Information

 KNF-108A uv254 cod sensorKNF-108A uv254 cod sensorKNF-108A uv254 cod sensorKNF-108A uv254 cod sensor


Our Services

* Standardized workshop and calibration process
* Professional quality inspection of 4-12 employees
* Fast delivery, free technical assistance
* Warranty 1 year



 What price can I get?

 We usually quote within 12 hours after receiving your inquiry. If you are very anxious to get the price, please let us know in your email so that we can contact and communicate in time.

 How can I get samples to check the quality of your products?

 fter confirming the price, you can request samples to check the quality of our products. As long as you can afford the express freight, we will provide you with samples.

What is your business scope?

 We mainly produce and sell air quality and water quality instruments, such as water quality sensors, water quality online monitoring equipment, air anion detectors, radiation detectors, gas detectors and some of our agents. Welcome to consult

What is your delivery time and warranty period?

Within 5-7 working days after payment is confirmed, customized products need to be discussed in detail, and the warranty period is one year


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Have a professional after-sales team to respond to you 24 hours a day. We are committed to producing the best quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.

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