The VicoMeter WKT-A2 Entry-Level Karl Fischer moisture analyzer uses the coulometric (coulometry) principle to determine trace moisture, detecting water down to 1 ppm and measuring solids, liquids, and powders within one minute. It offers a friendly interface with a 240×64 blue LCD and full Chinese menus. Multiple built-in calculation formulas display results directly as % and ppm moisture, and a printer port supports an optional mini printer. It is widely used in chemicals, petroleum, pharmaceuticals, power, food, research, and testing.
Overview
Technical Specifications
| Model | WKT-A2 |
| Measuring Principle | Karl Fischercoulometric（coulometric） |
| Measurement Speed | 33.5 μg H2O/s (max) |
| Measuring Range | 2 μg H2O to 130 mg H2O |
| Measurement Accuracy | Error ≤ ±2 μg for water content below 10 μg; error ≤ ±5 μg for 10–500 μg water (injection error excluded); standard deviation ≤ 0.2% |
| Resolution | 0.1μg H2O |
| Water Content (Concentration Range) | 1ppm-1000000ppm（0.0001%-100%） |
| Electrolysis Current | 0-400mA |
| Stirring Speed | Stepless knob adjustment |
| Drift/Blank Subtraction | Automatic subtraction |
| Special Functions | End-point delay, end-point detection, gain correction, electrolysis rate adjustment, and self-diagnostic fault alerts |
| Display & Operation | 240×64 blue LCD |
| Calendar/Clock | Current time, date, and test time/date display |
| Endpoint Indication | Screen prompt / audible alarm / end-point lamp |
| Operating Environment | Temperature 2 ℃–50 ℃, humidity <90% |
| Power Consumption | ≤30W |
| Unit Dimensions | 285mm*300mm*220mm |
| Power Supply | 220V 50HZ 150W |
| Weight | Main unit net weight 5 kg |
Applicable Industries
| Liquid | Chemical industry: alcohols, ethers, acids, benzenes, phenols, organic solvents, and other products suited to Karl Fischer determination. Petroleum and power: insulating oil, transformer oil, and other oils. Pharmaceutical industry: pharmaceutical raw materials, etc. Pesticide industry: emulsifiers, etc. Other industries: lithium battery electrolytes, etc. |
| Solid | Freely soluble solids such as various inorganic salts and citric acid |
| Gas | Gases such as nitrogen, SF6, natural gas, liquefied petroleum gas, Freon, and butadiene |
| The following industries require a Karl Fischer oven | |
| Insoluble Solids | Lithium batteries, plastics, medical, ceramic powders, metal powders, etc. |
| Other Insoluble Solids | Insoluble solids, easily contaminated and cross-contaminating samples (lubricating greases, aldehydes and ketones), samples that react with Karl Fischer reagent, and samples with slow moisture release |
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