Wholesale Turbidity Sensor For Water Quality Manufacturers & Factory

The primary divergence lies in the light source wavelength. ISO 7027 mandates an infrared emitter operating at 860 nm (with a ±30 nm bandwidth). Because near-infrared light is unaffected by dissolved color compounds in the water (such as humic acid or tannins), it is the globally preferred standard for wastewater, environmental surface water, and industrial effluent. US EPA 180.1 requires a tungsten-filament lamp operating between 400 and 600 nm. White light exhibits greater sensitivity to very fine sub-micron colloidal particles, making it common in North American municipal drinking water plants, although dissolved sample color can produce negative interference.

Mechanical rubber or silicone wipers are highly effective for biological algae and non-sticky silt. However, when deployed in petroleum-contaminated or greasy wastewater (such as food processing effluent), mechanical wipers can inadvertently smear oily films across optical windows. For these specialized applications, BOQU equips its ZDYG series with secondary compressed air scouring ports or ultrasonic transducers, which dynamically disperse hydrophobically adhering grease globules without direct mechanical contact.

Yes. Our smart IoT digital sensor series integrates an internal microprocessor that executes nephelometric algorithms, temperature compensation, and signal linearizations directly inside the sensor probe body. The sensor directly outputs isolated RS485 Modbus RTU communication, which interfaces straight into your existing PLC, DCS, RTU, or IoT edge gateway, eliminating the expense and physical cabinet space of secondary intermediate transmitters.

Sensors are pre-calibrated in our Shanghai clean calibration facilities using Formazin primary standards or secondary cross-linked polystyrene divinylbenzene microspheres (AMCO Clear). In field applications, we recommend verifying zero-point turbidity with 0.1-micron membrane-filtered deionized water every 30 to 60 days. Standard two-point calibration using certified Formazin can typically be conducted semiannually depending on process matrix severity.

Operating two state-owned manufacturing facilities across Kangqiao and Lingang, BOQU provides full OEM/ODM manufacturing. This spans custom CNC-machined probe housings (Titanium Gr2, Hastelloy C-276, PVDF, or 316L Stainless Steel), specialized cable jacket compounds (PUR/PTFE for aggressive hydrocarbons), bespoke Modbus register mappings, private label laser engraving, and custom-tuned optical beam paths for proprietary analytical instruments.