Wholesale TDS Meter Sensor Wholesaler & Manufacturer

Total Dissolved Solids (TDS) is an analytical measure of dissolved inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular suspended form. TDS meters measure the electrical conductivity (EC) of the solution and apply a conversion factor ($TDS = k \cdot EC$). This factor typically ranges between 0.50 and 0.70 depending on the ionic species (e.g., standard 442 natural water factor vs. 0.5 for NaCl-dominated streams). Advanced industrial TDS sensors provide user-configurable non-linear conversion matrices to assure precise correlation across varying chemical compositions.

Contacting conductivity/TDS sensors rely on direct physical contact between the metallic electrodes and the liquid medium, making them susceptible to fouling, biofilm accumulation, polarization errors at high ionic strengths, and chemical corrosion. In contrast, inductive (toroidal) sensors enclose excitation and sensing wire coils completely inside chemically resistant plastic shells (such as PEEK or PVDF). The fluid forms a closed electrical loop through the sensor bore, allowing maintenance-free, long-term continuous measurement in heavily fouled wastewater, sea water, and industrial chemical solutions.

Every batch of sensors and analyzers manufactured at our Kangqiao and Lingang facilities is produced under ISO 9001 and ISO 14001 certified workflows. Every finished unit undergoes a rigorous 48-hour continuous thermal stress aging cycle followed by automated multi-point NIST-traceable calibration validation. We provide full material test reports (MTR), CE compliance certificates, and customized private-label firmware/housing packaging designed to protect our overseas distributors' brand reputations.

Because we control upstream component machining and PCB assembly in-house, standard sensor configurations (such as standard Modbus RTU TDS sensors or high-temperature pH probes) maintain an immediate stock buffer, supporting shipments in 3 to 7 business days. Custom OEM/ODM requests (tailored cable lengths, specialized wetted bodies, or proprietary protocol firmware) typically ship in 2 to 3 weeks. Minimum order quantities start as low as 10 units for evaluation samples, scaling smoothly to multi-thousand unit container loads.

Yes. Our smart IoT digital sensor line features embedded processing chips that output standard RS485 Modbus RTU (or optional 4-20mA active/passive current loops). They connect seamlessly to Siemens, Allen-Bradley, Schneider PLCs, distributed control systems (DCS), or remote IoT telemetry edge nodes without requiring expensive intermediate proprietary transmitters, significantly decreasing overall system architecture costs.