Precision Process Sensors & Online Analyzers
Factory-direct instruments featuring RS485 Modbus RTU, 4-20mA telemetry, optical anti-fouling wipers, and high-temperature tolerance for global industrial process integration.
ZDYG-2088-01QX Online Turbidity & TSS Sensor
Infrared 860nm scattered light sensor with integrated mechanical wiper. Range: 0.01-4000 NTU / 0-50000 mg/L.
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MPG-6099Plus Multi-Parameter Online Analyzer
Integrated skid monitoring turbidity, residual chlorine, pH, conductivity, and dissolved oxygen with automatic data acquisition.
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pH5806 High Temperature pH Sensor (0-130℃)
Steam sterilizable glass electrode engineered for fermentation and pressurized reaction lines. Shanghai Brand certified.
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DOG-208FA High-Temp DO Sensor
Sterilizable polarographic dissolved oxygen electrode delivering zero-drift stability in hot bioprocess broths and reactors.
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IOT-485-pH Digital Online pH Probe
Microprocessor-integrated digital probe with isolated RS485 Modbus RTU. Directly connects to PLC/SCADA architecture.
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DCA130 pH & EC Dual Channel Controller
Compact DIN-rail or panel-mounted transmitter monitoring dual parameters simultaneously with relay contact outputs.
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pHG-2081Pro Industrial Online pH/ORP Analyzer
NEMA 4X / IP65 water treatment transmitter with dual 4-20mA loops, RS485 communication, and automatic temperature compensation.
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TOC-3042 Online Total Organic Carbon Analyzer
Continuous TOC oxidation measurement system for pharmaceutical ultra-pure loops, condensate, and high-purity water lines.
View TOC InstrumentExecutive Briefing: The China TSS & Turbidity Ecosystem
How Chinese precision optical instrument factories transformed from component assemblers into dominant global suppliers of ISO 7027 compliant optical suspended solids analytics.
Industrial Ecosystem & Scale
The continuous monitoring of Total Suspended Solids (TSS) and turbidity represents one of the most mission-critical parameters in process control, regulatory compliance, and environmental stewardship. In regions such as the Yangtze River Delta and Shanghai instrumentation hubs, manufacturers have established full vertical supply chain integration—from precision sapphire and optical-grade quartz lens grinding to localized high-frequency surface-mount device (SMD) digital signal processor (DSP) board fabrication.
Optical Metrology Standards
Modern China manufacturing adheres strictly to both the ISO 7027 infrared (860 nm) nephelometric 90° scattered light design and the US EPA 180.1 tungsten lamp ratio methodology. Integrating dual-beam ratio techniques alongside multi-angle backscatter detectors enables high-concentration MLSS measurement up to 50,000 mg/L (50 g/L) while neutralizing color interferences and LED aging drift automatically.
Tier-1 Quality Assurance Systems
Leading facilities run verified ISO 9001 and ISO 14001 management protocols. Optical TSS probes undergo rigorous submerged hydrostatic pressure testing (up to 10 bar), continuous 48-hour thermal chamber stress cycling, and primary Formazin multispot calibration before receiving factory dispatch sign-offs, guaranteeing field reliability across the Middle East, Southeast Asia, Europe, and the Americas.
Factory Scale & Engineering Infrastructure
Empirical production metrics from Shanghai BOQU Instrument Co., Ltd. headquarters and manufacturing facilities.
Why China Factories Lead the Global Water Quality Instrumentation Sector:
- Integrated Optical & Electrochemistry Labs: In-house laboratories capable of real-time temperature stress testing from -10°C to +130°C, high-pressure continuous flow simulations, and secondary calibration benchmarking.
- Rapid Prototyping & Customization: Full OEM/ODM engineering capabilities ranging from custom titanium or Hastelloy sensor bodies to tailored Modbus register mapping and customized enclosure screen printing.
- Aggressive Cost-to-Performance Ratio: Direct material procurement within China's optical and electronics corridor enables high-precision analytical equipment at 35%–60% lower capital expenditure than European or North American legacy brands.
China TSS & Turbidity Sensor Factory Pricelist
Wholesale benchmark pricing matrix for EPC contractors, industrial distribution networks, system integrators, and municipal municipal utilities (FOB Shanghai / Ningbo).
| Instrument Category | Measurement Principle & Range | Housing / Ingress / Clean Option | Communication & Output | MOQ | Estimated Factory Price (USD) |
|---|---|---|---|---|---|
| Standard Submersible Turbidity Sensor | 860 nm Infrared Nephelometry (90°) 0.01 – 4,000 NTU |
POM / 316L Stainless Steel IP68 Submersible, No Wiper |
RS485 Modbus RTU (direct output) |
1 – 5 pcs OEM Sample |
$240 – $380 / pc |
| Self-Cleaning Optical Turbidity & TSS Probe | Dual Scattered Light (90° & 140°) 0 – 1,000 NTU / 0 – 20,000 mg/L |
316L Stainless Steel / Titanium IP68 with Automatic Mechanical Wiper |
RS485 Modbus RTU + 4-20mA Output Option | 2 – 10 pcs | $450 – $680 / pc |
| High-Concentration Sludge TSS / MLSS Probe | Infrared Backscatter / Attenuation 0 – 50,000 mg/L (50 g/L) |
316L SS / POM Built-in Wiper or Compressed Air Port |
Isolated RS485 Modbus RTU / Multi-Drop | 2 pcs | $520 – $750 / pc |
| Low-Range Drinking Water Turbidity Unit | USEPA 180.1 or ISO 7027 Compliant 0.001 – 100.0 NTU (0.001 resolution) |
Flow-through Cell, Bubble Trap Chamber IP65 Controller Enclosure |
Dual 4-20 mA + 2 Relay Alarms + RS485 | 1 set | $650 – $980 / complete set |
| Integrated Multi-Parameter Wall-Mount Panel | Turbidity + Residual Chlorine + pH + EC Comprehensive skid assembly |
Flow-through acrylic manifold 7" Color Touchscreen Display |
Modbus RTU / TCP, 4G/GPRS Cloud Gateway | 1 set | $1,600 – $2,800 / panel |
| High-Temperature Fermentation pH/DO Sensor | Glass / Polarographic Electrode Steam Sterilization up to 130℃ |
PG13.5 Thread, S8/VP Connector High-pressure gel reference |
Direct mV / nA or In-head Digital Transmitter | 5 pcs | $85 – $190 / pc |
*Pricing reflects indicative factory export rates for B2B tenders; actual quotations vary depending on sensor material, specialized cable length, custom protocol firmware, and container volume commitments.
Technological Innovations Reshaping Water Analytics
Crucial developments that system designers and instrumentation engineers must evaluate prior to plant commissioning.
Decentralized Edge Microcontrollers
Traditional water systems relied on centralized, expensive secondary transmitters to decode analog millivolt signals. The current wave of China smart sensors integrates microprocessors inside the 316L probe head itself. The probe digitizes measurements at the optical source, applies calibration polynomials locally, and transmits error-free RS485 Modbus RTU or SDI-12 strings straight into SCADA remote telemetry units (RTUs), saving up to 40% in hardware installation costs.
Self-Cleaning & Biofouling Immunity
Optical measurement windows in biological wastewater basins or outdoor aquaculture tanks suffer from rapid biofilm accumulation. Chinese factory innovations include precision silicone-blade rotary wipers, ultrasonic window vibration modules, and automated pressurized pneumatic wash ports. Field tests verify maintenance intervals extended from twice-weekly manual cleaning to over 90 days of unattended operation.
Predictive Maintenance & Cloud Telemetry
Modern instruments monitor internal optical diode health, emitter degradation, and power rail integrity. When transmittance decreases past a safe operational threshold, the sensor broadcasts diagnostic warning flags over MQTT or Modbus before inaccurate data alters dosing control. This transition toward predictive intervention is essential for mission-critical environmental water infrastructure.
Engineered Solutions Across Industrial Verticals
Deployment configurations designed to meet tough environmental and chemical constraints across global installations.
Biological Wastewater Treatment (MLSS Control)
In biological aeration tanks and secondary clarifiers, controlling Mixed Liquor Suspended Solids (MLSS) between 2,500 and 4,500 mg/L dictates biological treatment efficiency. BOQU ZDYG-series sensors with mechanical wipers continuously deliver real-time solids feedback, controlling return activated sludge (RAS) and waste activated sludge (WAS) pump drives to cut plant energy usage by up to 18%.
Potable Water & Membrane Filtration
Regulatory municipal water guidelines demand effluent turbidity under 0.1 to 0.3 NTU to guarantee pathogen and cryptosporidium removal. BOQU flow-through turbidity cells fitted with integrated bubble traps eliminate optical false-positives caused by micro-effervescence, providing rapid notification of membrane rupture or media filtration breakthrough.
Mining Tailings & Aggregate Quarries
Abrasive mineral slurry thickener monitoring requires resilient instrumentation. Chinese specialized thick-wall POM and titanium optical probes withstand continuous high-velocity slurry abrasive conditions. Real-time suspended solids measurements let plant supervisors automate flocculant polymer dosing, reducing chemical waste while maximizing clear supernatant recovery.
Recirculating Aquaculture Systems (RAS)
In intensive fish hatchery loops, uneaten feed pellets and faecal particulate elevate TSS quickly, which damages gill morphology and harbors pathogenic bacterial load. Submersible digital optical sensors verify drum filter performance and biofilter health continuously via RS485 communication into multi-channel automation centers.
Thermal Power Plant Steam & Water Analysis Systems (SWAS)
Boiler feedwater purification demands trace particulate and chemical purity to protect boiler heating surfaces and steam turbine blades against scale and silica contamination. Combining high-temperature pH, conductivity, and low-turbidity instruments ensures total compliance with international power plant chemistry standards.
Frequently Asked Technical Questions
Clear answers addressing technical specifications, factory calibration, international shipping, and OEM customization.
What is the fundamental difference between NTU (Turbidity) and mg/L (TSS) measurement?
How does the optical self-cleaning wiper mechanism operate under heavy biological sludge?
Is BOQU an original manufacturer or an export intermediary?
Can BOQU sensors connect directly to third-party DCS/PLC systems without proprietary transmitters?
What international quality credentials and certifications do the instruments carry?
What are the typical export lead times, warranty periods, and packaging standards?
Factory Direct Product Portfolio
Complete online instrumentation solutions designed for dependable compliance monitoring and closed-loop process automation.
China High Temperature (0-130℃) pH Sensor With Temperature
Integrated temperature sensor and pressurized electrolyte reference designed for thermal biotechnology lines.
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High-Temperature S8 Connector pH Sensor
Standard S8/PG13.5 industrial connector offering drop-in replacement across international bioreactor ports.
View S8 pH Sensor
High-Temp pH Sensor For Pharmaceutical Fermentation
Designed to withstand repeated in-situ CIP/SIP steam sterilization cycles without drift or calibration loss.
View Biopharma Sensor
Wholesale High Temperature (0-130℃) pH Sensor
High-volume OEM electrode designed for heavy chemical manufacturing, dyeing facilities, and thermal power monitoring.
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SJG-2083CS Online Acid & Alkali Concentration Meter
Toroidal inductive conductivity analyzer monitoring chemical wash concentration and CIP loop performance.
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Online Residual Chlorine Analyzer
Constant-voltage amperometric measurement verifying disinfection limits in drinking networks and swimming systems.
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SWAS Online Trace Silicate & Phosphate Analyzer
Automated trace-level colorimetric analyzer protecting boiler turbines from silica scaling and corrosion.
View SWAS Analyzers
Online COD, TP, TN & NH₃-N Discharge Analyzer
Automated wet-chemistry digestion analyzer delivering regulatory compliance data logging and auto-calibration.
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