LQHV-660 Electrolytic Moisture Analyzer

ARM-powered Karl Fischer coulometric titrator for ppm-level water detection in insulating oils and industrial fluids

Compliant with: ASTM D6304 | IEC 60814 | GB/T 7600

Technical parameters

Core Capabilities

• 💧 Ultra-Sensitive Detection - Measures 1ppm to 5% water content

• 📈 Real-Time Visualization - Dynamic potential curve monitoring

• 🧠 Smart Algorithms - Auto-calculation for weight/volume measurements

• 🔋 Self-Diagnostics - Electrode/reagent status monitoring

Testing Methodology

Karl Fischer Coulometry

1. Iodine Generation - Electrolytic cell produces I₂ from reagent

2. Reaction:

   H₂O + I₂ + SO₂ + 3RN → 2RN·HI + RN·SO₃

3. Endpoint Detection - Bivoltometric electrode senses excess I₂

4. Calculation:

   H₂O (μg) = (Q × M_w) / (2 × F)
                  Q=Charge (Coulombs), M_w=18g/mol, F=Faraday constant

Smart Features

Dynamic Monitoring

• Real-time titration curve display

• Auto-zoom for endpoint identification

Adaptive Testing

• Delay start for low-moisture samples

• Adjustable stirring speed (50-1000 RPM)

Industry Applications

Maintenance Protocol

• 🧪 Daily - Anode/cathode cleaning

• 🔄 Weekly - Reagent replacement (typically 50 tests/bottle)

• 📊 Monthly - Verify with sodium tartrate dihydrate