China Water Hardness Sensor Manufacturer & Suppliers: Next-Gen Online Hardness & Multi-Parameter Analytics

Manual laboratory titration relies on Ethylenediaminetetraacetic acid (EDTA) chelating with Ca²⁺ and Mg²⁺ at an alkaline pH (buffered around 10.0) with an Eriochrome Black T indicator. BOQU's online automated hardness analyzers mimic this standardized colorimetric wet chemistry automatically, ensuring identical results without technician intervention. Alternatively, our Ion-Selective Electrode (ISE) probes directly evaluate the thermodynamic activity of divalent cations through the Nernst equation, providing continuous real-time readings that are dynamically correlated to CaCO₃ values with exceptional repeatability.

In cooling towers exhibiting high biological loads and calcium precipitation, solid-state ISE probes typically require bi-weekly manual wipe inspection, or can be equipped with BOQU's automated compressed air/water jet cleaning assemblies. Automated wet-chemistry analyzers, conversely, perform self-cleaning and zero-point calibration cycles automatically after every measurement cycle, typically requiring reagent cartridge replacement only once every 30 to 60 days.

Yes. All BOQU instruments—including our pHG-2081Pro, DCA130, and digital IoT sensor lineups—adhere strictly to standard industrial protocols. We supply RS485 Modbus RTU serial buses and isolated 4-20mA current outputs with user-configurable alarms. Direct PLC integration (Siemens, Allen-Bradley, Schneider, Mitsubishi) requires no proprietary software keys or third-party protocol converters.

Yes. BOQU manufactures certified high-temperature sanitary sensors such as the pH5806, DOG-208FA, and TOC-3042 online analyzers. Materials in contact with the fluid meet strict FDA biocompatibility guidelines and ISO 14001 environmental frameworks, supporting Clean-in-Place (CIP) and Steam-in-Place (SIP) thermal regimes up to 130°C.

Every export shipment includes comprehensive factory calibration reports, CE conformity declarations, material traceability certificates, full electrical connection diagrams, and English instruction manuals. On request, we provide SGS third-party pre-shipment inspection verification and Certificate of Origin (CO) documentation.