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| Categories | Multi Parameter Water Quality Sensor |
|---|---|
| Brand Name: | KaiNaFu |
| Model Number: | KNF-300/V4 |
| Place of Origin: | Shenzhen |
| MOQ: | 1 pieces |
| Payment Terms: | T/T |
| Supply Ability: | 500 pieces+One month |
| Delivery Time: | 5-10 Working day |
| Packaging Details: | Eco-friendly paper box |
| size: | 96*96*108mm (opening size: 92*92mm) |
| Measuring range: | Sensor selection table below |
| weight: | Net weight 410g (wireless transmission version 460g) |
| Number of sensor connections: | 1 stick |
| Company Info. |
| Shenzhen Kainafu Technology Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
IoT Water Quality Sensor It Can Be Connected To A Sensor And Is Widely Used In Industries Such As Industrial Processes, River Surface Water, And Tap Water Pump Rooms
1.Product Introduction
The KNF-300 series is a newly developed online water quality monitor by Kainafu Technology. It is widely used in industrial processes, water treatment, river surface water, water pump rooms, sewage discharge, swimming pools, aquaculture and other industries. It is compatible with multiple sensors and has high flexibility. It is equipped with 4G wireless transmission function to view real-time data on on-site display screens, mobile phone apps, computer web pages and other devices. Data connection can also be achieved through the RS485 interface Modbus-RTU protocol communication function.
The KNF-300 series water quality monitor features the
characteristics of the new generation of Internet of Things water
quality monitors, with complete functions, simple operation, LCD
liquid crystal segment code screen with backlight function, saving
installation space, facilitating unified management in the later
stage, and extremely low maintenance requirements in the later
stage!

2. Main Features
• Fully functional and easy to operate
• Clear interface, backlit LCD liquid crystal segment code screen
•It saves installation space and requires extremely low maintenance
in the later stage
•It is compatible with multiple water quality sensors and has high
flexibility
•4G wireless transmission +RS485 north-south communication function
It features unified management through a mobile APP and a PC web
page backend
3.Technical indicators
Product number | KNF-300/KNF-300-V4 (4G version) | Manufacturer | Shenzhen Kainafu Technology Co., Ltd. |
measurement standard | Sensor selection table below | size | 96*96*108mm (opening size: 92*92mm) |
Measuring range | Sensor selection table below | weight | Net weight 410g (wireless transmission version 460g) |
Number of sensor connections | 1 stick | working environment | -25℃~55℃ 5%~95% (no condensation) |
Wireless transmission | 4G built-in traffic card (KNF-300-V4) | storage environment | -40℃~70℃ |
Alarm function | Two alarm relay outputs | Working power | AC/DC 100~260V, 50~60Hz |
communication function | RS485 north-south direction Modbus RTU protocol | Software APP | Apple-Android APP/WEB (KNF-300-V4) |
Sensor Connection | Standard 5m 4-core shielded cable | power consumption | 0.5W (without sensor) |
Display method | Large-screen LCD display (with backlight) | installation method | Embedded/cabinet mounted |
environmental standards safety standard Electromagnetic Standards Shape standard | IEC 60068-2 IEC 61010-1,UL 61010-1 IEC 61000-4/-2-3-4-5-6-8-11,CISPR 22 DIN 43700,ANSIC39.1 | ||
Kinaf water quality sensor selection table (please contact our company for details) | |||||
Sensor type | model | Measuring range | precision | resolution | Measuring principle |
PH | KNF-101 | 0-14PH | 0.02PH | 0.01PH | PHcompositeelectrode |
ORP | KNF-101A | -1500~1500mV | ±20mV | 1mV | ORP electrode |
TDS | KNF-102B | 0-9999ppm | ±1%F.S. | 1ppm | quadrupole |
Conductivity | KNF-102H | 100-60000uS/cm 0.1-500mS/cm | ±1%F.S. | 1us/cm | quadrupole |
salinity | KNF-102HA | 0-100ppt | ±1%F.S. | 0.01ppt | quadrupole |
dissolved oxygen | KNF-103B | 0~20mg/L | ±2% | 0.01mg/L | Fluorescence |
Turbidity | KNF-104B | 0.1~1000 NTU | ±2% | 0.3NTU | 90°lightscattering method |
suspended matter | KNF-104H | 0.5-4000 mg/L | 5%FS | 0.01mg/L | 135° backlight |
Sludge | KNF-104HA | 1-15000mg/L | <3% | 1mg/L | 135° backlight |
Chlorine | KNF-105 | 0-20mg/L | ±2% | 0.01mg/L | Three-electrode principle |
Ammonia nitrogen | KNF-107A+ | 0.5-1000ppm | 5%F.S. | 0.01ppm | ionselection method |
COD | KNF-108A | 0.5-500,1-1000 mg/L | <5% | 0.01mg/L | UVabsorption method |
Chlorophyll A | KNF-109 | 0-400ug/L | ±5%F.S. | 1cells,mL | Fluorescence |
blue green algae | KNF-110 | 0-270000 cells/mL | ±5%F.S. | 1cells,mL | Fluorescence |
oil in water | KNF-112A | 0-50ppm/0-0.40FLU | ±3%F.S. | 0.01ppm | UVfluorescencemethod |
4. Introduction to the Water Quality Monitoring Software Cloud Platform (DATAIO)
All the water quality/water level related equipment produced by our company can be connected to the Kainafu water quality monitoring cloud platform! It can realize the reception, display, statistics, automatic analysis, storage, download and release of monitoring data from various water quality sensor devices. Generate visual calculation result charts intuitively on the display terminal of the monitoring management center.
▪ Desktop WEB page (login address: ion.onetestinc.com. Contact the
product owner for a trial account to obtain it)
▪ Apple APP, Android APP
▪ Wechat Official Account/Mini Program


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