Wholesale Turbidity Sensor Arduino Suppliers & Factories

Hobbyist Arduino turbidity modules use simple plastic enclosures, non-waterproof circuit boards, visible red LEDs, and straight-line transmittance optics that foul within hours and saturate at low turbidity values. In contrast, industrial OEM sensors manufactured by Shanghai BOQU Instrument feature hermetically sealed IP68 stainless steel or titanium bodies, 860nm near-infrared nephelometric optics (ISO 7027 compliant), active temperature compensation, and onboard microprocessors that filter digital noise and deliver pre-calibrated RS485 Modbus RTU data directly to microcontrollers.

Yes. While classic Arduino boards operate on 5V logic, our factory manufactures turbidity sensor interface boards with selectable 3.3V/5.0V voltage reference switches, as well as native digital RS485 transducers that interface seamlessly via low-cost MAX3485 or SP3485 transceivers powered directly by the 3.3V rail.

Turbidity values cannot be derived purely by a simple linear slope formula across wide ranges. The proper method involves performing a multi-point calibration using certified Formazin turbidity primary standards (typically 0.0 NTU deionized water, 20 NTU, 100 NTU, and 800 NTU). Sensor raw voltage readings or photodiode microampere outputs are captured at each point, and a 3rd-order polynomial curve equation (NTU = a*V^3 + b*V^2 + c*V + d) is generated and stored in Arduino non-volatile EEPROM memory for real-time calculation.

As an integrated manufacturer with in-house CNC and mold injection lines, we offer full OEM/ODM branding services. This includes precision laser etching of your brand logo, corporate model numbers, and pinout diagrams on stainless steel probe jackets; custom shielded PUR/PTFE cable lengths up to 100 meters; custom waterproof connectors (M12, aviation plugs); and customized firmware register addresses to fit your proprietary system framework.

Standard evaluation sample units for engineering R&D are dispatched within 24 to 48 hours. For commercial wholesale orders, standard production MOQ begins at 10 units for specialized digital submersible probes, and 50–100 units for embedded PCB modules. Production lead times for batches between 100 and 1,000 units are routinely completed within 7 to 14 business days, supported by our dual Shanghai facilities holding an annual capacity exceeding 100,000 instruments.

Continuous submersion in open water or wastewater leads to biofilm accumulation across the optical window. To prevent manual maintenance cycles, our factory offers integrated automatic mechanical wiper assemblies driven by miniature sealed DC brushless motors, as well as copper alloy anti-biofouling guard rings and high-power ultrasonic cavitation options. When triggered periodically by an Arduino timer command, these mechanisms ensure optical clarity for up to 6 months of unattended field deployment.