Engineered for extreme process media, pressurized lines, and continuous monitoring without signal drifting.
Built-in Pt100/Pt1000 RTD for immediate Nernst thermal compensation. Optimized for thermal hydrolysis, boiling brine, and batch chemical neutralization.
Features polymerized solid polymer gel electrolyte with annular porous ceramic junction, preventing poisoning from metal sulfites and protein clogging.
Standardized IP68 waterproof lab/industrial quick plug. Minimizes downtime during sensor replacement, CIP cleaning, and routine calibration cycles.
Specifically engineered for sterile bioreactors. Endures multiple SIP (Steam-In-Place) cycles at 121–130°C without zero-potential shift or slope deterioration.
Awarded the coveted Shanghai Brand certification. Features dual-chamber pressurized gel electrolyte reference system for maximum operational life.
Polarographic high-temp DO probe paired alongside industrial pH sensors in fermentation vessels, providing reliable oxygen transfer coefficient (KLa) monitoring.
Embeds internal microprocessor for mV-to-digital processing directly inside the probe head. Immune to external electromagnetic interference on long cable runs.
Rugged wall/panel mount transmitter with dual 4-20mA isolated channels, dual SPDT dosing relays, and digital RS485. Operates seamlessly with all BOQU glass sensors.
Modern industrial processes have evolved past fragile, high-maintenance potentiometric glass probes. At Shanghai BOQU Instrument, our dedicated high-temperature sensor laboratory is executing a multi-tier engineering roadmap to tackle poisoning, thermal fatigue, and sensor drift in hostile industrial streams.
Traditional glass bulb impedance ranges from 50 to 500 MΩ, leaving conventional analog lines vulnerable to electromagnetic hum and moisture bridges. BOQU is pioneering ion-sensitive field-effect transistor (ISFET) chip integration and solid-state antimony matrices for hydrofluoric acid (HF) applications where SiO2-based glass dissolved within days.
The primary mode of online pH electrode failure is reference poisoning due to reverse osmotic ingress of process ions (e.g., S2-, CN-, heavy metals). By formulating high-molecular-weight crosslinked polyacrylamide gels pre-pressurized to 0.6 MPa, BOQU ensures continuous positive outflow, guaranteeing baseline stability across hundreds of 121°C SIP cycles.
Modern Industrial 4.0 plants demand predictive maintenance over reactive recalibration. Next-gen BOQU digital transmitters continuously calculate dynamic glass membrane impedance and reference junction resistance in real-time, executing machine learning algorithms that output actual Remaining Useful Life (RUL) metrics via Modbus / HART networks.
Headquartered in Shanghai with dual facilities in Kangqiao and the Lingang Free Trade Special Area, BOQU Instrument blends automated robotic glass blowing, cleanroom electrode assembly, and end-to-end component traceability.
Over 4,632 m² of specialized workshops encompassing automated sensor glass blowing, automated SMT PCB assembly, and complete flow-through immersion housing machining.
Unmatched volume capacity backed by dual buffer stock warehouses, guaranteeing that standard sensors ship within 48 to 72 hours, insulating global partners from supply disruptions.
Every single electrode undergoes pressurized heated bath cycling and 48-hour electrical bias burn-in before NIST-traceable multi-point calibration verification.
From raw specialized lithium silicate glass blowing to injection-molded PPS/Ryton shells and in-house firmware development, complete process sovereignty is maintained.
Transparent tiered pricing for international EPC contractors, instrumentation distributors, and plant operators. Volume OEM discounts apply for batch agreements.
| Model / Series | Core Application | Temp / Pressure Scope | Output / Connector | MOQ | Factory Tier 1 Price (USD) | Lead Time |
|---|---|---|---|---|---|---|
| pH5806 Series Shanghai Brand Certified |
Pharma Fermentation, Bioreactors, SIP/CIP | 0 ~ 130℃ | Up to 0.6 MPa | VP6 / S8 Quick Disconnect | 1 Unit | $110.00 – $185.00 | In Stock (2-3 Days) |
| BpH-200 Heavy Duty | Chemical Neutralization, Petrochem, Mining | -10 ~ 110℃ | Up to 1.0 MPa | Direct Coaxial Cable / BNC | 2 Units | $45.00 – $75.00 | In Stock (2-3 Days) |
| IOT-485-pH Series Smart Digital Sensor |
Smart Water Utilities, RAS Aquaculture, SCADA | -10 ~ 80℃ | Up to 0.4 MPa | RS485 Modbus RTU (Embedded) | 1 Unit | $95.00 – $140.00 | In Stock (2-3 Days) |
| Antimony Acid Probe | Hydrofluoric Acid (HF) Etching, Glass Pickling | 0 ~ 80℃ | Up to 0.3 MPa | PG13.5 Thread / 5m Lead | 1 Unit | $130.00 – $210.00 | 5 - 7 Days |
| DCA130 System | Dual Channel Monitoring (pH + Conductivity) | -20 ~ 60℃ Amb | 4-20mA & RS485 | Dual Sensor Direct Inputs | 1 Set | $220.00 – $340.00 | 3 - 5 Days |
| pHG-2081Pro Analyzer | Continuous Process pH/ORP Control Station | Universal 90-260VAC / 24VDC | Dual 4-20mA, Relays, RS485 | 1 Set | $160.00 – $230.00 | In Stock (2-3 Days) |
*Note: Volume contract discounts (-15% to -35%) available for annual OEM framework agreements and distributor container shipments. Customized cable lengths (10m, 20m, 50m) and titanium/Hastelloy flow jackets quoted on request.
Selecting an electrochemical sensor requires deep alignment with hydraulic conditions, chemical agressiveness, fouling velocities, and regional compliance mandates.
Discharge permits (e.g., US EPA, EU IED, China GB8978) mandate continuous records. Severe industrial effluent causes junction coatings. BOQU flat-surface self-cleaning glass probes with high-velocity flow assemblies eliminate sludge coating and save manual wiping cycles.
Enzymatic synthesis and mammalian cell cultivation require sub-0.02 pH regulation. The pH5806 sensor eliminates silver ion precipitation (AgCl-free design option available), preserving batch integrity throughout 14-day continuous fermentation runs.
In high-purity ultra-pure boiler water (<0.1 µS/cm conductivity), low ionic strength creates asymmetric streaming potentials across liquid junctions. BOQU specialized pure-water flow cells with constant electrolyte bleeding provide ultra-stable baseline pH records.
Ensuring uncompromised conformance with rigorous engineering standards for cross-border installations.
Manufacturing adheres strictly to audited ISO 9001 and ISO 14001 frameworks. Every instrument is backed by certified CE mark, RoHS compliance, and SGS verification.
Custom cable lengths up to 100m, specialized insertion immersion fittings (tri-clamp, weld-in, flange, retractable holders), and custom firmware baud rates.
Direct communication with dedicated English and Russian-speaking instrumentation engineers for application sizing, sensor matching, and calibration advice.
Global EPC buyers are invited to inspect automated testing labs, aging racks, and SMT workshops via live high-definition 360° VR or video audits prior to PO release.
Direct answers to the most common engineering and procurement questions encountered by global B2B buyers.
Shanghai BOQU Instrument Co., Ltd. is an authentic direct manufacturer founded in 2007. Operating across two facilities in Shanghai (Kangqiao Town and Lingang Special Area) with over 4,632 square meters of production floorspace and 200+ employees, BOQU produces all sensor glass formulations, reference systems, digital transmitters, and housings completely in-house.
The pH5806 utilizes specialized high-temperature, low-impedance glass formulated in our specialized lab. Combined with a pressurized polymerized solid gel electrolyte and a double-ceramic junction, the internal reference remains under steady positive pressure even during 121–130°C SIP cycles, preventing process back-flow, reference dilution, and baseline hysteresis.
Yes. If you specify our IOT-485-pH digital sensor series, the electrode incorporates an encapsulated microprocessor and signal amplifier within the probe body. It communicates via standard Modbus RTU directly into your SCADA, PLC, or IoT edge gateway. For traditional analog glass electrodes, an analyzer like our pHG-2081Pro or transmitter module is required to convert high-impedance mV signals into 4-20mA or digital protocols.
To recommend the optimum sensor and provide an exact pricelist, please share: (1) Measuring range & chemical composition, (2) Operating and peak process temperatures, (3) Line or tank pressure, (4) Presence of solvents, oils, sulfides, or fluorides, (5) Installation style (immersion, flow cell, retractable bypass, or PG13.5 thread), and (6) Required signal output (mV analog, 4-20mA, or RS485 Modbus).
Standard catalog pH probes, including high-temperature and digital models, ship from buffer stock within 2 to 3 business days via DHL, FedEx, or air freight. Custom OEM configurations (custom markings, cable lengths, special thermistors) take roughly 7 to 12 days. Sample units are available for qualified engineering trials and bench evaluations.
Browse our verified export configurations backed by 48-hour burn-in and ISO 9001 factory warranty.
Industrial glass electrode with internal temperature compensation for thermal processes, boiling reaction tanks, and sterilization vessels.
Features polymerized solid polymer gel electrolyte with annular porous ceramic junction, preventing poisoning from metal sulfites and protein clogging.
Standardized IP68 waterproof lab/industrial quick plug. Minimizes downtime during sensor replacement, CIP cleaning, and routine calibration cycles.
Specifically engineered for sterile bioreactors. Endures multiple SIP cycles at 121–130°C without zero-potential shift or slope deterioration.
Infrared 860nm scattered light optical sensor with mechanical wiper. Deployed side-by-side with pH electrodes in raw sewage and industrial clarifiers.
Combines pH and electrical conductivity measurement into a single panel controller. Ideal for hydroponics, RO pretreatment, and boiler blowdown.
Integrated pre-plumbed monitoring skid integrating pH, residual chlorine, turbidity, conductivity, and dissolved oxygen with touch HMI.
Toroidal non-contact conductivity meter engineered for aggressive chemicals (HCl, H2SO4, NaOH), replacing standard glass pH probes in severe pickling.
