Bigdipper T-BD5-EMC1204 Insertion-Type Online Liquid Concentration Analyzer

Overview

The Bigdipper T-BD5-EMC1204 is an insertion-type online liquid concentration analyzer engineered for continuous, real-time measurement of relative concentration in conductive and non-conductive two-phase liquid systems. It operates on the principle of high-frequency dielectric spectroscopy (1–10 MHz range), leveraging differences in complex permittivity between components—such as water and hydrocarbon phases, polar solvents and non-polar carriers, or dispersed polymer particles and aqueous media—to derive concentration values without optical interference or sample extraction. Unlike optical or near-infrared methods, this technique remains robust under turbid, opaque, or highly viscous conditions—including emulsions, slurries, and pulp suspensions—where light transmission is compromised. The sensor’s compact G1″ threaded insertion design enables direct in-line mounting into process pipes or vessels, minimizing dead volume and eliminating bypass loops. Its intrinsically safe Ex ia IIC T6 certification ensures deployment in Zone 0/1 hazardous environments common in petrochemical, pharmaceutical, and fine chemical manufacturing.

Key Features

• High-speed response (<10 ms) suitable for closed-loop control integration in dynamic processes
• Wide operating temperature range (−10°C to +40°C ambient), with optional high-temperature variants supporting up to 350°C process media via external cooling jackets
• Stainless steel 304 housing and PTFE-wetted surfaces ensure chemical compatibility with aggressive solvents, acids, alkalis, and organic media including paints, inks, resins, and pharmaceutical intermediates
• No moving parts or optical windows—eliminates mechanical wear, fouling risk, and calibration drift associated with flow-through or immersion probes
• Configurable 4–20 mA analog output with user-defined scaling, plus digital communication via RS485 Modbus RTU and IEEE 1451.2 STIM protocol for smart transmitter integration into DCS/SCADA systems
• Electromagnetic compatibility (EMC) optimized per IEC 61326-1 for industrial noise environments; meets EN 61000-4-2/3/4/6 immunity standards

Sample Compatibility & Compliance

The T-BD5-EMC1204 is validated for use across a broad spectrum of industrial liquids where dielectric contrast enables reliable quantification: water-in-oil emulsions (e.g., metalworking fluids, hydraulic oils), oil-in-water systems (e.g., wastewater effluents, dairy processing streams), polymer dispersions (latexes, acrylic emulsions), mineral slurries (coal, iron ore, kaolin), papermaking stock, and solvent-based formulations (paints, adhesives, coatings). It complies with ISO 9001:2015 manufacturing controls and supports GLP/GMP traceability through audit-ready configuration logs and firmware versioning. While not certified to ASTM D6304 or USP <921> for absolute moisture quantification, it delivers repeatable relative concentration trending aligned with internal process specifications and ISO 21501-4 for particle suspension monitoring applications. For regulatory submissions requiring data integrity, the BD5xCD transmitter variant supports optional 21 CFR Part 11-compliant electronic signatures when integrated with compliant SCADA platforms.

Software & Data Management

The analyzer interfaces natively with industry-standard automation protocols, enabling seamless integration into plant-wide data historians (e.g., OSIsoft PI, Emerson DeltaV, Honeywell Experion). Configuration and diagnostics are performed via the Bigdipper PC Utility (Windows-based), which supports parameter backup/restore, real-time signal monitoring, and sensor health diagnostics—including impedance spectrum analysis to detect coating buildup or electrode degradation. All configuration changes are timestamped and logged locally on the BD5xCD unit, providing full change history for quality audits. Optional cloud connectivity (via MQTT over Ethernet or cellular gateway) allows remote performance monitoring, predictive maintenance alerts, and centralized fleet management across multi-site operations—without compromising network security boundaries.

Applications

• Petrochemical refining: Continuous monitoring of water content in crude distillation overheads, amine regenerator feeds, and fuel blending streams
• Pharmaceutical manufacturing: In-process verification of solvent ratios during API crystallization, lyophilization buffer preparation, and emulsion-based topical formulation
• Paper & pulp: Real-time consistency control of wood fiber suspensions prior to headbox delivery
• Mineral processing: On-stream measurement of slurry solids concentration in flotation circuits and tailings thickeners
• Coatings & inks: Closed-loop adjustment of resin-to-solvent ratios during high-shear dispersion and let-down stages
• Food & beverage: Monitoring of glycol/water antifreeze concentration in CIP return lines and ethanol/water blends in flavor extraction

FAQ

What types of liquids can the T-BD5-EMC1204 measure accurately?
It is optimized for binary or pseudo-binary liquid systems exhibiting sufficient dielectric contrast—such as water/oil, water/solvent, polymer/water, or solid/liquid suspensions—with conductivity typically below 5 mS/cm. Highly conductive brines or molten salts require engineering consultation.
Is calibration required after installation?
A single-point zero/span verification using reference standards is recommended at commissioning; thereafter, field recalibration is rarely needed due to inherent stability of the RF sensing architecture—though periodic validation against grab samples is advised per ISO/IEC 17025 quality protocols.
Can it be installed in vertical or horizontal piping?
Yes—but orientation must follow the “flow-into-sensor” rule: the probe tip must face upstream and be mounted perpendicular to flow direction to ensure laminar, undisturbed exposure. Vertical downflow installations are discouraged due to potential air entrapment.
Does the instrument support HART or Foundation Fieldbus?
No—only RS232/RS485 serial interfaces with Modbus RTU and IEEE 1451.2 STIM are supported. HART or FF integration requires an external protocol converter.
What is the maximum allowable process pressure for direct insertion?
The standard sensor body is rated for 1.6–4.0 MPa (232–580 psi) at 20°C; pressure derating curves are provided in the technical manual for elevated temperatures.