News Details

Shenzhen Kainafu Technology Co., Ltd. — Who We Are

Shenzhen Kainafu Technology Co., Ltd. (brand: CARE AND LOVE) is a dedicated R&D manufacturer of water quality online monitoring sensors and systems, headquartered in Shenzhen, China's technology manufacturing hub.

We are not a trading company. Every sensor we sell is designed, developed, manufactured, and calibrated in-house — giving customers direct access to factory pricing, engineering expertise, and full customization capability without intermediary markup.

Our mission, unchanged since founding: Care for environments and health — supplying the instruments that help industries, municipalities, and environmental agencies monitor and protect water quality worldwide.

Company Credentials

Our Water Quality Sensor Range

The core of Kainafu's business is the KNF-100 series — a comprehensive family of individual water quality sensors covering every major measurement parameter. All sensors share a common RS-485 Modbus RTU output and are compatible with the Kainafu cloud monitoring platform.

pH / ORP Sensors

KNF-101PRO — the flagship pH/ORP sensor. Measures pH (0–14, ±0.02 accuracy) and ORP (±1,000 mV) simultaneously. IP68 rated to 6 bar / 50 m depth. Ceramic sand core junction for superior biofouling resistance. Supports both submersible and pipeline installation.

KNF-101-1 — digital pH sensor with flow cell for pipeline sampling applications. RS-485 + 4–20 mA output.

KNF-101-2 — combined pH/ORP dual sensor for drinking water monitoring. Compact Φ32 mm housing.

Dissolved Oxygen Sensors

KNF-103A — fluorescence quenching DO sensor purpose-built for aquaculture. No membrane, no electrolyte, no frequent calibration. Range 0–20 mg/L, accuracy ±0.5 mg/L.

KNF-103B — high-performance fluorescence DO sensor for industrial and environmental applications. Response time <10 s, drift <1% per year, IP68.

Turbidity / Suspended Solids Sensors

KNF-1004L — ISO 7027 laser turbidity sensor, 860 nm light source, 0–100 / 0–1,000 NTU, IP68.

KNF-1004Pro — intelligent turbidity sensor with integrated self-cleaning brush and infrared light source. Unaffected by sample color. 0–1,000 or 0–4,000 NTU.

KNF-1004H/HA — self-cleaning suspended solids sensor. Near-infrared LED, sapphire light guide, 0.5–4,000 mg/L (optional to 10,000 mg/L).

KNF-1004APro — dual-mode SS sensor (90° scattering + double-beam), 0–1,000 mg/L and 0–25 g/L ranges.

COD / TOC Sensors

KNF-108A — UV absorption COD sensor measuring COD (0.75–450 mg/L), TOC, and turbidity simultaneously. No reagents, 316L stainless steel housing, integrated self-cleaning brush.

KNF-1008APro — smart COD sensor at 254 nm and 546 nm dual wavelength, simultaneously deriving BOD, COD, TOC, and turbidity. Response time <10 s.

Ammonia Nitrogen / Nitrogen Sensors

KNF-107A+ — up to 4 simultaneous electrodes (pH + NH₄⁺ + ORP/K⁺ + reference). No sample pre-treatment. Range 0.5–1,000 ppm, IP68.

KNF-1007A+Pro — smart ammonia nitrogen sensor with PT1000 temperature compensation, RS-485 Modbus RTU, for buoy and raft integration.

KNF-107B — total nitrogen sensor combining NH₄-N + NO₃-N measurements. Range 0.15–1,000 ppm (TN up to 2,000 ppm).

Conductivity / TDS / Salinity Sensors

KNF-102Pro — two-electrode graphite sensor, 0–600,000 μS/cm, measures conductivity, TDS, salinity, and temperature. IP68.

KNF-102HPRO — four-electrode sensor supporting International Salinity Scale (0–50 PSU) for seawater and brine applications.

Residual Chlorine Sensors

KNF-1005A/B/C — coated film three-electrode amperometric sensors for free chlorine, chlorine dioxide, dissolved ozone, and total chlorine. Range 0–5 / 0–20 / 0–100 mg/L.

KNF-1005D/E — platinum electrode method for tap water, pipe networks, and swimming pools. Design life >18 months.

Specialty and Ion Sensors

KNF-112 / KNF-1012Pro — oil-in-water sensors using UV fluorescence. Detection limit 5 ppb, automatic self-cleaning brush.

KNF-1013Pro — nitrate sensor, ion-selective electrode, 0–1,000 mg/L.

KNF-1014Pro / 1015Pro / 1016Pro / 1017Pro — fluoride, chloride, sodium, and potassium ion sensors, all with PT1000 temperature compensation and replaceable membrane heads.

KNF-1009Pro — chlorophyll sensor, fluorescence method, 0–500 μg/L, for algal bloom early warning.

KNF-1100Pro — blue-green algae (cyanobacteria) sensor, 0–2,000 kcells/mL.

Multi-Parameter Sensors

KNF-505 — integrated multi-parameter sensor covering pH, DO, ORP, conductivity, turbidity, and temperature in a single submersible housing with auto-cleaning.

KNF-2100Pro — flagship multi-medium sensor platform supporting 15+ parameters including water level, COD, oil-in-water, and all major ions. Φ63/75 mm for narrow groundwater well deployment.

Contact Kainafu — Factory Direct

For product enquiries, OEM requests, technical specifications, or pricing, our team responds within 24 hours.

📧 Email: knfeco@knfsensors.com
🌐 Website: www.knfsensors.com

Shenzhen Kainafu Technology Co., Ltd. — Care for Environments and Health.