HOGON ALT-1-C Online Moisture Analyzer (Standard or Explosion-Proof Version)

Overview

The HOGON ALT-1-C Online Moisture Analyzer is an industrial-grade, fully automated Karl Fischer (KF) titration-based analyzer engineered for real-time, unattended moisture monitoring in liquid process streams. Unlike laboratory-based KF systems, the ALT-1-C integrates directly into production lines—enabling continuous, representative sampling of aqueous or organic solvents, plating baths, electrolytes, cleaning agents, and other process fluids where precise water content control is critical to product quality, reaction yield, or equipment longevity. Its core measurement principle follows the standardized electrochemical or volumetric Karl Fischer reaction, wherein iodine generated in situ (coulometric mode) or delivered via calibrated burette (volumetric mode) quantitatively oxidizes water in the sample. The endpoint is detected potentiometrically, ensuring high specificity and minimal interference from common matrix components. Designed and manufactured in Shanghai by HOGON Scientific Instruments—a certified ISO 9001:2015 producer—the ALT-1-C delivers trace-level moisture detection (typically down to 10 ppm H₂O, dependent on sample volume and matrix) with reproducibility ≤±2% RSD under stable operating conditions.

Key Features

• Fully automated operation: Integrated peristaltic sampling pump, precision reagent dosing module, and programmable waste evacuation sequence eliminate manual intervention.
• Dual configuration options: Standard enclosure (IP65-rated for dust/water resistance) or certified explosion-proof version (Ex ib IIB T4 Gb) suitable for Zone 1/2 hazardous areas handling flammable solvents.
• Modbus RTU digital interface: Enables seamless integration with DCS, SCADA, or PLC systems for real-time data logging, alarm triggering, and closed-loop control signal output (e.g., feedforward reagent dosing or dilution valve actuation).
• User-configurable sample volume (1–20 mL): Optimized for dynamic moisture ranges—from low-water-content solvents (10,000 ppm)—without hardware modification.
• Onboard calculation engine: Implements ASTM E203-compliant moisture mass fraction algorithms; supports custom unit conversion (ppm, % w/w, mg H₂O/g sample) and automatic temperature/pressure compensation where applicable.
• 24/7 operational readiness: Continuous cycle capability with ≤20-minute analysis interval, robust thermal management, and fail-safe reagent level monitoring ensure long-term reliability in demanding factory environments.

Sample Compatibility & Compliance

The ALT-1-C accommodates a broad spectrum of non-aqueous and aqueous matrices including but not limited to sulfuric acid electrolytes, acetone-based degreasers, methanol-containing rinse baths, glycol-based heat transfer fluids, and amine scrubbing solutions. It is incompatible with strongly oxidizing agents (e.g., concentrated nitric acid), aldehydes/ketones exhibiting side reactions with KF reagents, or highly viscous slurries requiring pre-filtration. All wetted parts are constructed from chemically resistant PTFE, PEEK, and borosilicate glass. The system complies with electromagnetic compatibility (EMC) requirements per IEC 61326-1 and meets mechanical safety standards per IEC 61000-6-2/-4. For regulated industries (pharmaceutical intermediates, battery electrolyte manufacturing), the device supports audit-ready operation when paired with validated LIMS or MES platforms—data integrity aligns with ALCOA+ principles and facilitates FDA 21 CFR Part 11 compliance through external electronic signature and audit trail implementation.

Software & Data Management

While the ALT-1-C operates autonomously via embedded firmware, its Modbus RTU interface allows bidirectional communication with third-party supervisory software. Users may configure sampling frequency, alarm thresholds (high/low moisture limits), hold time before analysis, and waste purge duration via standard Modbus registers. Raw titration curves, endpoint stability metrics, reagent consumption logs, and environmental sensor readings (optional ambient temperature/humidity input) are accessible for trend analysis. When integrated into a validated environment, timestamped result records—including operator ID, method version, and calibration status—are exportable in CSV or XML format. No proprietary cloud platform or vendor-hosted software is required; all data governance remains under end-user control.

Applications

• Electroplating & PCB manufacturing: Real-time monitoring of rinse bath moisture to prevent oxide formation and adhesion defects.
• Lithium-ion battery electrolyte production: Ensuring <20 ppm H₂O in LiPF₆ solutions prior to filling—critical for SEI layer stability and cell cycle life.
• Pharmaceutical active ingredient synthesis: In-line verification of solvent dryness during Grignard or lithium aluminum hydride reductions.
• Petrochemical refining: Continuous assessment of amine solvent hydration in gas sweetening units to maintain CO₂/H₂S removal efficiency.
• Coatings & adhesives formulation: Preventing premature crosslinking or viscosity drift caused by ambient moisture ingress in polyurethane or epoxy resin tanks.

FAQ

What is the minimum detectable moisture concentration?
Detection limit is matrix-dependent but typically achieves 10 ppm (w/w) for 10 mL samples using coulometric KF chemistry; lower limits require larger volumes or pre-concentration steps.
Can the ALT-1-C be calibrated automatically?
Yes—built-in calibration verification routines support daily zero-point and span checks using certified water standards (e.g., Hydranal® 1.00 mg/mL); full calibration requires manual initiation per SOP.
Is remote diagnostics supported?
No native Ethernet or Wi-Fi; however, Modbus RTU over RS-485 enables integration with gateway devices supporting SNMP or MQTT for remote health monitoring.
How often does the KF reagent need replacement?
Reagent lifetime depends on sample moisture load and frequency; typical service intervals range from 2–6 weeks under continuous operation at ≤500 ppm average moisture.
Does the system meet SIL2 functional safety requirements?
The base unit is not SIL-certified; however, safety-critical interlocks (e.g., emergency reagent shutoff upon high-temperature fault) may be implemented externally via hardwired PLC logic.