Metrohm 2035 Industrial Process Analyzer

Overview

The Metrohm 2035 Industrial Process Analyzer is a modular, wet-chemistry-based online analytical platform engineered for continuous, unattended operation in demanding industrial and wastewater treatment environments. It operates on three core titrimetric principles—potentiometric, photometric, and thermometric titration—each implemented via dedicated, field-replaceable measurement modules. Unlike optical or electrochemical sensors limited to single-parameter monitoring, the 2035 delivers laboratory-grade quantitative chemical analysis directly in process streams, enabling precise determination of analytes such as chloride, hardness, alkalinity, free chlorine, sulfate, and total acid number (TAN). Its design adheres to the fundamental requirements of process analytical technology (PAT) as defined by ICH Q8/Q9 and supports integration into distributed control systems (DCS) and supervisory control and data acquisition (SCADA) architectures. With IP66/NEMA 4-rated enclosures, it withstands dust ingress, high-pressure water jets, and ambient temperature fluctuations typical in chemical plants, refineries, and municipal wastewater facilities.

Key Features

• Triple-configuration architecture: Selectable base modules for potentiometric, photometric, or thermometric titration—each optimized for specific matrix challenges (e.g., thermometric titration for highly corrosive or turbid samples where electrode fouling or light scattering compromises other methods)
• Fully modular wet-chemistry system: Reagent delivery, dosing pumps, reaction cells, and detection units are mechanically and electrically decoupled, enabling rapid reconfiguration without system downtime
• Intelligent sample handling: Integrated auto-dilution logic triggers when measured signal exceeds calibrated linear range; dilution factor is dynamically calculated and applied prior to reanalysis, ensuring traceability and compliance with ISO 5667-3 for representative sampling
• Self-calibrating operation: Scheduled or event-driven calibration routines use certified reference standards; calibration logs include timestamp, operator ID (if authenticated), and deviation metrics—supporting GLP/GMP audit trails per FDA 21 CFR Part 11
• Web-native HMI: Browser-based interface accessible via secure HTTPS; role-based access control (RBAC) allows configuration of operator, supervisor, and administrator privileges aligned with ISA-95 Level 3 operational protocols

Sample Compatibility & Compliance

The 2035 accommodates aqueous process streams across pH 2–12 and suspended solids up to 100 mg/L, with optional filtration and heating modules extending applicability to viscous or particulate-laden effluents. All wetted materials—including PTFE, ETFE, sapphire, and Hastelloy C-276—are selected per ASTM F2136 for chemical resistance in aggressive media (e.g., chlorinated brines, acidic leachates). The system complies with EN 61326-1 (EMC), EN 61000-6-2/6-4 (industrial immunity/emission), and meets SIL 2 requirements per IEC 61508 when integrated with safety instrumented systems. Data integrity safeguards—including electronic signatures, immutable audit logs, and checksum-verified firmware updates—fulfill EU Annex 11 and USP analytical instrument qualification criteria.

Software & Data Management

Metrohm’s iControl PA software provides centralized configuration, real-time diagnostics, and predictive maintenance alerts via OPC UA connectivity. Raw titration curves, derivative plots, and endpoint detection algorithms are stored in vendor-neutral HDF5 format, enabling third-party integration with LIMS (e.g., LabWare, Thermo SampleManager) and MES platforms. All measurement data carry embedded metadata: sample ID, location tag, method version, calibration status, and environmental sensor readings (temperature, pressure, flow rate). Remote troubleshooting is supported through encrypted VNC sessions with session logging, satisfying remote support clauses in ISO/IEC 17025:2017 Clause 7.1.3.

Applications

• Chemical manufacturing: Continuous monitoring of neutralization endpoints in batch reactors and distillation overheads
• Municipal wastewater: Real-time tracking of coagulant dosage (e.g., FeCl₃, Al₂(SO₄)₃) and residual disinfectant (Cl₂, ClO₂) in secondary effluent
• Power generation: Feedwater purity control (cation conductivity correction via Na⁺/NH₄⁺ titration) and condensate polishing verification
• Food & beverage: Acid/base titration for organic acid profiling (lactic, citric) in fermentation broths without chromatographic separation
• Pharmaceutical utilities: Monitoring of clean-in-place (CIP) rinse cycles via conductivity-pH-titration hybrid methods per ISPE Baseline Guide Vol. 5

FAQ

Can the 2035 perform simultaneous multi-parameter analysis on a single sample stream?
Yes—via sequential module activation within one analysis cycle; e.g., pH and conductivity measurement followed by potentiometric chloride titration using shared sample introduction hardware.
Is method validation documentation provided for regulatory submissions?
Metrohm supplies IQ/OQ/PQ protocol templates, method transfer guides, and uncertainty budgets compliant with EURACHEM/CITAC QUAM:2022, supporting FDA and EMA submissions.
What is the minimum required sample flow rate for reliable operation?
0.5–2.0 L/min, adjustable via integrated flow control valves; low-flow mode (0.1 L/min) is available with optional peristaltic sample pump.
How often does the system require maintenance under continuous operation?
Preventive maintenance intervals are 6 months for fluidic components and 12 months for electronics; consumables (electrodes, cuvettes, reagents) are tracked via RFID-tagged cartridges with automated low-stock alerts.
Does the 2035 support integration with DeltaV or Siemens PCS7 DCS?
Yes—native drivers for both systems are included; Modbus TCP and OPC DA/UA gateways are preconfigured and tested per ISA-88/ISA-95 interoperability profiles.