Featured Process Sensors & Analytical Assemblies
Engineered under ISO 9001 and CE directives, calibrated against NIST-traceable standards, and validated through 48-hour continuous burn-in cycles.
Verified Supply Chain & Manufacturing Capacity
Vertical manufacturing across dual facilities in Pudong and Lingang, Shanghai.
Titanium Alloy Conductivity Electrochemistry in Aggressive Media
A rigorous examination of cell constants (K-factor), polarization mechanics, passivated titanium matrices, and wholesale acquisition tiers.
Passivated Grade 2 & Grade 5 Titanium
Unlike 316L stainless steel that exhibits micro-pitting in chloride concentrations exceeding 200 ppm, titanium forms an instantaneous, regenerative TiO₂ oxide film. This passive layer eliminates galvanic erosion and ion-leaching in high-purity power plant feedwater and acidic wastewater streams.
AC Quad-Frequency Cell Compensation
Electrochemical double-layer capacitance causes severe measurement attenuation at low frequencies. BOQU titanium alloy sensors use alternating square-wave excitation (50 Hz to 20 kHz) matched with Pt1000/NTC30K algorithms to suppress capacitance drift across 0.01 μS/cm to 200 mS/cm.
High-Pressure Seal Architecture
Built with PEEK/PVDF isolators and dual FFKM (Kalrez-equivalent) elastomeric seals, these titanium assemblies resist operating pressures up to 1.6 MPa (16 bar) and thermal cycling up to 130°C, preventing micro-void seepage in high-temperature bioreactors and steam condensate recovery.
| Model / Sensor Spec | Cell Constant (K) | Measuring Range | Wetted Materials | Thermal & Pressure Rating | Wholesale Baseline (MOQ 10) |
|---|---|---|---|---|---|
| BOQU-TI-001 Ultra-Pure | K = 0.01 cm⁻¹ | 0.01 – 20.00 μS/cm | Grade 2 Titanium + PEEK | -10°C to +110°C / 1.0 MPa | $145 – $195 / unit |
| BOQU-TI-010 Standard SWAS | K = 0.10 cm⁻¹ | 0.1 – 200.0 μS/cm | Grade 5 Titanium + PEEK | -20°C to +130°C / 1.6 MPa | $160 – $220 / unit |
| BOQU-TI-100 Industrial Process | K = 1.00 cm⁻¹ | 1.0 – 2,000 μS/cm | Titanium + PVDF / PTFE | -10°C to +100°C / 1.0 MPa | $130 – $180 / unit |
| BOQU-TI-4E Digital Modbus | 4-Electrode Active | 10 μS/cm – 200 mS/cm | Titanium Ring Matrix + PPS | 0°C to +90°C / 0.6 MPa | $210 – $280 / unit |
| BOQU-TI-CIP Sterilizable | K = 0.05 cm⁻¹ | 0.05 – 500 μS/cm | Titanium Alloy + Tri-Clamp 1.5" | Up to 140°C (SIP 30 min) / 1.2 MPa | $240 – $320 / unit |
Localized Engineering Regimes & Mission-Critical Deployments
Where standard stainless steel electrodes fail due to stress corrosion cracking, titanium alloy sensors maintain dimensional and electrochemical stability.
Thermal & Nuclear SWAS Loops
Thermal generating stations rely on specific, cation, and degassed conductivity to identify parts-per-billion ingress of sodium, chloride, and carbonate. Titanium alloy conductivity sensors eliminate ionic shedding into the analytical line, ensuring continuous turbine compliance without erroneous corrosion trip-outs.
Seawater Desalination (SWRO)
With chloride concentrations reaching 19,000–35,000 mg/L in raw seawater intake and high-pressure brine rejects, standard stainless steel suffers catastrophic crevice attack. Passivated titanium conductivity elements deliver years of uninterrupted service across reverse osmosis multi-pass membrane skids.
Pharma & Bio-Fermentation CIP/SIP
Bio-reactors undergo cyclic steam sterilization followed by caustic (NaOH) and nitric acid (HNO₃) clean-in-place sequences. Titanium alloy electro-polished sensor bodies resist chemical etching and thermal shock, retaining calibrated K-factor precision across hundreds of consecutive batches.
China Industrial Manufacturing Ecosystem & Scalability
How Shanghai BOQU leverages localized precision machining, certified raw titanium alloys, and automated assembly to reduce total procurement costs by 35–50%.
Integrated CNC Machining
Sensor housings and electrode arrays are turned and milled in-house on 5-axis DMG MORI CNC centres. Tolerances are controlled within ±0.005 mm to secure consistent cell geometries across mass production volumes.
Baoji Titanium Alloy Sourcing
Raw bar stock and tubes are sourced directly from Baoji certified mills with complete chemical composition and tensile mill test certificates (MTC 3.1), eliminating supply bottlenecks and raw material volatility.
SMT & Proprietary Firmware
Surface-mount PCB assembly, temperature compensation programming, and digital RS485 Modbus protocol stacks are developed and populated in-house, giving distributors total control over branding, baud rates, and private registries.
48-Hour Wet Thermal Aging
Every titanium conductivity sensor undergoes dynamic hydraulic pressure tests up to 2.5 MPa and continuous wet electrical aging in calibrated reference baths prior to final dispatch, yielding sub-0.1% warranty return rates.
Next-Generation Analytical Electrochemistry & IIoT Architecture
Anticipating the technological transformation of online liquid analysis over the next decade.
Edge-Computing Embedded DSP
Moving beyond basic ADC conversion, future titanium sensors integrate low-power ARM Cortex-M4 DSP cores capable of running real-time Fast Fourier Transforms (FFT). This allows immediate detection of bubble entrapment, biofilm build-up, and flow starvation directly inside the sensor head.
Predictive Electrode Health (PEH)
By monitoring micro-impedance shifts and polar surface changes over operating hours, the sensor calculates a remaining useful life (RUL) score, notifying SCADA and maintenance personnel before calibration limits are breached.
Direct-to-Cloud LoRaWAN & NB-IoT
Eliminating transmitters and external data loggers entirely, BOQU's expanding range of digital titanium probes directly support battery-assisted wireless telemetry, providing autonomous field monitoring across remote water reclamation networks.
International Regulatory Compliance & OEM Framework
Ensuring cross-border interoperability, safety conformance, and full technical accountability for international procurement contracts.
EU CE & RoHS 3 Conformance
Compliant with EN 61326-1 industrial EMC emission and immunity criteria, guaranteeing no interference with variable-frequency drives (VFDs) and high-power motor contactors. Heavy metal free per RoHS directive 2011/65/EU.
ISO 9001 & ISO 14001 Quality Loops
Full traceable production logs from raw titanium bar chemical melt heats down to final calibration standard lot certificates. Automated digital documentation for audits and turnkey engineering bids.
OEM Private Label Program
Laser engraving, custom process connection threads (NPT, BSP, Tri-Clamp, Flange), bespoke cable jacket materials (PTFE, silicone, PUR), and vendor-specific Modbus RTU register mapping delivered under strict NDA terms.
Frequently Asked Engineering & Procurement Questions
Specific answers addressing metallurgical selection, cell constant matching, calibration, and logistics.
Why specify Titanium Alloy over 316L Stainless Steel or Graphite?
While 316L stainless steel is economical, it is prone to chloride-induced pitting, galvanic micro-cracking, and oxide erosion under temperatures exceeding 60°C. Graphite electrodes can shed micro-particles into ultra-pure water loops, contaminating high-pressure boiler lines. Passivated Grade 2 and Grade 5 titanium offers exceptional corrosion resistance, zero particulate flaking, and superior dimensional stability under thermal cycling.
How do I select the appropriate cell constant (K-factor) for my process?
Cell constant selection is governed by the target conductivity span: For ultra-pure boiler feed and pharmaceutical WFI (0.01 to 20 μS/cm), specify K=0.01 cm⁻¹ to maximize signal resolution. For drinking water, condensate, and light industrial process lines (1.0 to 200 μS/cm), use K=0.1 cm⁻¹. For standard raw water and cooling circuits (10 to 2,000 μS/cm), specify K=1.0 cm⁻¹. For high-salinity brines and chemical streams above 2,000 μS/cm, select a 4-electrode titanium system or inductive toroidal design.
Can BOQU titanium sensors output RS485 Modbus directly without a transmitter?
Yes. BOQU supplies both conventional analog 2-wire/4-wire electrode assemblies (which wire into our DCA130, pHG-2081Pro, or SJG-2083CS controllers) and smart IoT digital sensors. Digital variants feature integrated microelectronics embedded within the sensor cap, outputting standard RS485 Modbus RTU directly to third-party PLCs, SCADA hosts, or RTUs.
What is the standard lead time and minimum order quantity (MOQ) for wholesale?
Standard titanium models (K=0.01, 0.1, 1.0 cm⁻¹ with 3/4" NPT threads) maintain buffer stock in our Shanghai warehouse with lead times of 3 to 7 business days for batches under 100 units. Custom OEM assemblies involving proprietary connection geometries, special cable lengths, or private labeling typically require 2 to 3 weeks. Wholesale pricing discounts initiate at an MOQ of 10 units.
What temperature compensation curves are supported?
All BOQU titanium sensors incorporate high-precision Pt100, Pt1000, or NTC30K RTD sensors embedded inside the central titanium electrode pin. Our online transmitters and digital sensor firmware support linear compensation coefficients (0.00% to 10.00%/°C) and non-linear pure water algorithms adhering to ASTM D1125 and ISO 7888 standards.
How are the sensors packaged and certified for international export?
Sensors are sealed in moisture-barrier anti-static bags, enclosed in custom high-density shock-absorbent EPE foam casings, and packed into reinforced export cartons. Every unit includes an individualized calibration test report showing measured K-factor, cell capacitance, and insulation resistance at 500V DC.
Complete Online Water Quality Instrumentation Systems
Integrate our titanium alloy and electrochemical sensors with advanced multi-channel transmitters and wet-chemistry monitoring cabinets.
