Primary Industrial TDS, Conductivity & Analytical Assemblies
Direct B2B factory wholesale selection engineered for precision dosing, boiler blowdown, RO skids, and bioprocess monitoring.
China High-temperature pH Sensor Used Pharmaceutical Fermentation
Ultra-stable specialized probe fabricated for high-temperature sterile biotechnology, withstands repetitive CIP/SIP autoclave sterilization.
View Specifications
Wholesale High Temperature (0-130℃) pH Sensor
Continuous inline analytical sensor capable of sustained 130℃ operation with pressurized polymer electrolyte barrier resistance.
View Specifications
High Temp (0-130℃) Sensor With Integrated Temp Comp
Equipped with internal Pt100/Pt1000 RTD elements for real-time automatic temperature compensation (ATC) in harsh thermal fluids.
View Specifications
High-temperature S8 Connector Sensor Assembly
Standard PG13.5 mechanical thread with IP68 shielded S8 coaxial connector interface, fully plug-and-play with global bioreactor docks.
View Specifications
pH5806 Industrial High-Temp Analytical Electrode
Shanghai Brand certified precision glass chemistry electrode designed for prolonged thermal duty in pharmaceutical and brewing processes.
View Specifications
DOG-208FA High Temperature DO Sensor
Polarographic dissolved oxygen sensor engineered to withstand high-pressure steam environments while providing nano-level sensitivity.
View Specifications
IOT-485-pH Digital RS485 Modbus Smart Sensor
Microprocessor-embedded probe delivering direct RS485 telemetry without external transmitters, designed for decentralized IoT arrays.
View Specifications
ZDYG-2088-01QX Optical Turbidity & TSS Sensor
Infrared 860nm scattered light technology with automatic mechanical wiper scraper for continuous zero-maintenance effluent monitoring.
View SpecificationsEngineering TDS Sensors: The Strategic Bridge in Process Automation
How Total Dissolved Solids monitoring drives yield, safeguards critical infrastructure, and accelerates industrial sustainability.
The Quantitative Physics of TDS
Total Dissolved Solids measurement quantifies mobile charged ions—primarily salts, minerals, and metals. Operating through the proportional relationship between ionic concentration and electrical conductance (σ = K · C), modern industrial TDS instrumentation translates conductivity into ppm or mg/L utilizing dynamic conversion factors calibrated to specific fluid matrices.
Electrode vs. Toroidal Technologies
Contacting 2-pole and 4-pole electrode sensors utilize precision platinum or titanium pins to measure pure and ultra-pure water with micro-Siemens accuracy. Conversely, electrodeless toroidal (inductive) TDS probes encapsulate excitation coils inside PEEK or PVDF bodies to operate unaffected by oil fouling, scaling, or highly concentrated chemicals.
Edge Computing & Direct Telemetry
The contemporary paradigm shift moves beyond fragile analog millivolt transmissions. Modern smart TDS sensors feature on-probe ADC chips that run onboard non-linear temperature compensation curves (such as ISO 7888 / DIN 38404) and stream digital Modbus-RTU over RS485 directly into SCADA and DCS systems without auxiliary converters.
Technical Roadmap & Future Outlook: Next-Gen TDS Telemetry
Evaluating the technological trajectory of inline water analytics across 2025–2030.
| Technological Domain | Current Legacy Benchmark | Active Industry Standard (BOQU 4.0) | Next-Generation Evolution (2026-2030) |
|---|---|---|---|
| Sensor Element Topology | Stainless steel 316 2-pin contacting cells prone to polarization | Quad-pole Titanium & PEEK-encapsulated inductive toroidal arrays | Micro-patterned Diamond-like Carbon (DLC) & Solid-State Graphene thin films |
| Temperature Compensation | Fixed linear 2.0%/°C slope calculations | Embedded high-speed Pt1000 RTD with programmable dual-curve matrix | Multi-frequency dielectric spectroscopy with neural-network auto-calibration |
| Signal Integrity & Edge Processing | Raw mV analog transmission susceptible to line attenuation | Isolated direct digital RS485 Modbus-RTU with integrated microprocessor | Ultra-low-power NB-IoT/LoRaWAN direct satellite/cellular edge reporting |
| Preventive Diagnostics | Manual off-line standard calibration and technician inspections | Electrode fouling detection and continuous glass/cell impedance tracking | Predictive autonomous self-healing membrane circuits & acoustic cleaning |
Macro-Industry Solutions Powered by TDS Instrumentation
Scalable, field-tested integration architectures tailored to critical infrastructure and industrial automation.
Thermal & Nuclear Power Plants (SWAS)
Steam and Water Analysis Systems (SWAS) require sub-microgram per liter resolution. High-accuracy conductivity and TDS sensors continuously monitor cation conductivity and blowdown loops, preventing boiler tube corrosion, silica scaling on turbine blades, and billion-dollar unplanned outages.
- Cation Conductivity
- Boiler Protection
- Turbine Integrity
Industrial RO & Desalination Desorption
Reverse Osmosis desalination plants rely on differential TDS measurements across membrane stages to quantify rejection rates, detect membrane pinhole leaks, and optimize energy recovery devices (ERDs). Precision TDS data guides CIP chemical cycle triggers and antiscalant dosing.
- Membrane Diagnostics
- Desalination
- Antiscalant Dosing
Commercial Hydroponics & Vertical Farming
Plant nutrient uptake hinges entirely on precise electrical conductivity (EC) and TDS control. By feeding real-time PPM signals directly into fertilizer injection valves, growers maintain accurate nutrient delivery without nutrient lockout, salt accumulation, or root burn.
- Nutrient Dosing
- Closed Loops
- Crop Yield Control
China Factory 4.0: Supply Chain Resilience & Volume Capability
Inside Shanghai BOQU Instrument: Vertically integrated manufacturing designed to eradicate B2B lead times.
Dual Shanghai Production Plants
Spanning 4,632 m² across Kangqiao and Lingang high-tech parks, BOQU controls the full manufacturing workflow—from CNC body machining and platinum electrode sputtering to in-house SMT PCB pick-and-place lines.
First Dedicated High-Temp Lab
Featuring China's pioneering specialized high-temperature water quality sensor laboratory, probes undergo rigorous thermal shock testing, steam resistance cycles up to 130℃, and pressurized flow loop calibrations before sign-off.
48-Hour Burn-in & Calibration
Every single instrument undergoes a non-negotiable 48-hour continuous burn-in cycle, combined with multi-point automated buffer calibration against NIST-traceable standard solutions, guaranteeing factory-verified zero-drift delivery.
Founded Year
Floorspace (m²)
Engineers & Staff
Annual Units
Export Countries
Enterprise Clients
Global Enterprise Procurement & OEM/ODM Engineering
Customization capabilities designed to satisfy engineering contractors, private brand labels, and instrumentation wholesalers.
Private Labeling & Housing Design
Full mechanical customization including laser-etched distributor branding, custom stainless steel 316L, titanium, PEEK, or PTFE housing options, process connections (NPT, BSP, Tri-Clamp), and specialized cable assemblies.
Firmware & Protocol Integration
Custom protocol engineering tailored to legacy controllers. Integrate customized Modbus register mappings, BACnet, Profibus-DP, or proprietary cloud telemetry firmware natively flashed into the sensor micro-controller.
International Regulatory Compliance
Engineered to align with global market access regulations. Fully backed by complete documentation dossiers, including ISO 9001/14001, CE directives, SGS factory audits, RoHS environmental compliance, and FDA material declarations.
Industrial TDS Sensor Wholesale: Frequently Asked Questions
Detailed technical, commercial, and operational insights for global procurement managers.
What is the exact correlation between TDS (ppm) and Electrical Conductivity (µS/cm)?
When should an engineer specify an Inductive (Toroidal) probe over a Contacting 2-pole cell?
How does BOQU ensure long-term sensor stability under 130℃ continuous operating cycles?
What are the minimum order quantities (MOQs) and lead times for OEM customized orders?
Can BOQU digital RS485 sensors be wired directly into PLC/SCADA systems without external transmitters?
Secondary Analytical Assemblies & Field-Deployable Hardware
Complete multi-parameter transmitters, online concentration meters, and process analyzers ready for worldwide bulk shipment.
DCA130 Online pH & EC Dual Channel Controller
Compact dual-channel process instrument providing simultaneous pH and conductivity control for compact skids and hydroponic dosing.
View Specifications
MPG-6099Plus Multi-Parameter Flow-through Station
Turnkey wall-mount system integrating TDS, pH, residual chlorine, and turbidity with automatic fluid distribution for tap water networks.
View Specifications
pHG-2081Pro Industrial Wall/Panel Analyzer
Rugged IP65 analytical transmitter with dual 4-20mA current outputs, programmable SPDT relay alarms, and isolated RS485 communication.
View Specifications
SJG-2083CS Acid & Alkali Concentration Meter
Inductive conductivity analyzer designed to measure percentage concentrations of HNO3, HCl, H2SO4, and NaOH in automated CIP operations.
View Specifications
Online Amperometric Residual Chlorine Analyzer
Reagentless free chlorine analyzer featuring constant-voltage electrodes and integrated temperature/pH auto-compensation loops.
View Specifications
Trace SWAS Colorimetric Wet-Chemistry Analyzer
High-precision trace analyzer targeting parts-per-billion (ppb) silicate, phosphate, and sodium levels in boiler water conditioning.
View Specifications
TOC-3042 Online Total Organic Carbon Analyzer
UV-persulfate catalytic oxidation system for real-time organic carbon verification in pharmaceutical USP purified water networks.
View Specifications
Online COD / TP / TN / Ammonia Effluent Monitor
Automated wet-chemistry system with integrated self-cleaning and self-calibration cycles designed for municipal discharge monitoring.
View Specifications