HOGON ALT-1-C Coulometric Karl Fischer Online Moisture Analyzer
| Brand | HOGON |
|---|---|
| Origin | Shanghai, China |
| Manufacturer | HOGON Scientific Instruments Co., Ltd. |
| Type | Domestic |
| Model | ALT-1-C Online |
| Pricing | Upon Request |
Overview
The HOGON ALT-1-C Coulometric Karl Fischer Online Moisture Analyzer is an industrial-grade, process-integrated analytical instrument engineered for continuous, real-time quantification of trace to bulk water content in liquid process streams. It operates on the electrochemical principle of coulometric Karl Fischer titration—where iodine is generated *in situ* via controlled electrolysis of iodide ions in the reagent, and stoichiometrically reacts with water according to the classic Karl Fischer reaction (I₂ + SO₂ + H₂O + 3RN + CH₃OH → 2RN·HI + RN·HSO₄CH₃). This method delivers high specificity for water, immunity to common interferences (e.g., alcohols, ketones, organic acids), and sub-ppm detection capability without solvent replacement between analyses. Designed for deployment directly at the point of process—inside chemical reactors, electrolyte blending tanks, transformer oil circulation loops, or electroplating baths—the ALT-1-C eliminates manual sampling, lab turnaround delays, and associated human error, enabling closed-loop moisture control in compliance with ISO 8573-3, ASTM D6304, and GB/T 7600–2014.
Key Features
- Coulometric detection mode with dynamic iodine generation, ensuring stable baseline, minimal reagent consumption, and long-term calibration integrity
- Triple-mode automated sampling: overflow volumetric sampling, titration loop aspiration, and high-precision syringe pump delivery (±1 µL accuracy) for viscous, volatile, or particulate-laden streams
- Modular architecture supporting configurable detection modules—potentiometric endpoint detection, photometric colorimetric sensing, or dual-wavelength absorbance—for multi-analyte capability (e.g., simultaneous H₂O and acid number)
- IP65-rated enclosure with optional ATEX/IECEx-certified explosion-proof configuration (IICT4) for hazardous area installation
- Multi-channel sequential analysis: single analyzer can cycle through up to 8 independent sample points via programmable valve manifold, reducing CAPEX by >30% versus distributed analyzers
- Embedded PID control engine with programmable setpoints, ramp profiles, and manual override—outputting analog (4–20 mA) or digital (Modbus TCP, CAN bus) signals to drive dosing pumps or PLCs
Sample Compatibility & Compliance
The ALT-1-C accommodates a broad range of industrial matrices including lithium battery electrolytes (e.g., EC/DMC/LiPF₆ blends), petroleum-based insulating oils, aqueous plating baths (acid sulfate copper, nickel sulfamate), polar aprotic solvents (NMP, DMF, acetone, MEK), and pharmaceutical-grade excipients. Its chemically resistant fluid path—constructed from PTFE, PFA, and sapphire—ensures compatibility with aggressive media and minimizes carryover. The system conforms to GLP and GMP data integrity requirements: all measurements are time-stamped, user-attributed, and stored with full audit trail (including reagent lot numbers, electrode status, and calibration history). Data export supports CSV and XML formats compliant with FDA 21 CFR Part 11 for electronic records and signatures.
Software & Data Management
The embedded HOGON ProcessView™ firmware provides a web-accessible HMI with role-based access control (administrator, operator, viewer tiers), configurable alarm thresholds (deviation, rate-of-change, sensor fault), and predictive maintenance alerts—including reagent exhaustion estimation, electrode drift monitoring, and pump wear diagnostics. Historical data is logged locally (SD card, 16 GB) and synchronized via secure TLS 1.2 to enterprise SCADA or MES platforms. Remote firmware updates, diagnostic logs, and live titration curve visualization are accessible via HTTPS. All configuration changes generate immutable audit entries with timestamp, username, and parameter before/after values—fully traceable for regulatory inspection.
Applications
- Lithium-ion battery manufacturing: Continuous monitoring of moisture in LiPF₆ electrolyte blends; maintains H₂O < 20 ppm to prevent HF generation and cathode degradation
- Power transmission: In-line analysis of transformer oil per GB/T 7600–2014; triggers dehydration unit activation when moisture exceeds 15 ppm
- Surface finishing: Simultaneous tracking of free acid concentration and water content in chromium plating baths to stabilize film morphology
- Fine chemical synthesis: Closed-loop control of solvent dryness during Grignard or lithiation reactions where water must remain < 50 ppm
- Pharmaceutical API production: Real-time verification of residual solvent moisture in NMP or THF prior to crystallization steps per ICH Q5C guidelines
FAQ
What is the lower detection limit for water using the ALT-1-C?
The coulometric mode achieves a theoretical detection limit of 0.1 µg H₂O (equivalent to ~0.0001 wt%), validated per ASTM D6304 Annex A2.
Can the ALT-1-C operate unattended for extended periods?
Yes—typical reagent refill interval is 6–12 weeks depending on sample water load and analysis frequency; onboard diagnostics notify operators 72 hours prior to depletion.
Is third-party system integration supported?
Fully supported via Modbus TCP (register mapping provided), OPC UA (optional add-on), and hardwired 4–20 mA analog outputs with HART protocol compatibility.
How is electrode fouling mitigated in dirty process streams?
The system employs pulsed cleaning cycles, flow-through electrode geometry, and optional ultrasonic transducer integration to maintain surface integrity without manual intervention.
Does the ALT-1-C meet cybersecurity standards for OT environments?
Yes—it implements TLS 1.2 encryption, disabled default credentials, configurable firewall rules, and regular CVE vulnerability patching aligned with IEC 62443-3-3 Level 1 requirements.
