Coulometric (coulometry) principle, ideal for trace-level testing; 5-inch color touchscreen with smart operation, automatic result calculation, and freely configurable sample IDs; complies with multiple national standards and suits virtually every industry.
8 moisture calculation formulas, 6 determination methods, and 8 end-point detection algorithms
Automatic drift compensation, automatic subtraction of ambient and background moisture, and self-diagnostic fault alerts
One-touch start for reliable results
Outstanding automation — connects seamlessly to the Karl Fischer oven for difficult samples
RS232 interface for connection to a PC, printer, PLC, or LIMS
Overview
Technical Specifications
| Model | WKT-A9 |
| Measuring Principle | Karl Fischercoulometric（coulometric） |
| Measurement Speed | 40 μg H2O/s (max) |
| Measuring Range | 0.1μg-350mg |
| Measurement Accuracy | Error ≤ ±2 μg for water content of 100–1000 μg; error ≤ ±0.2% above 1000 μg (injection error excluded); standard deviation ≤ 0.3% |
| Resolution | 0.1μg H2O |
| Water Content (Concentration Range) | 0-100% |
| Electrolysis Current | 0–400 mA adjustable |
| Moisture Concentration Resolution | 0.001 |
| Concentration Units | %、ppm、mg/kg |
| Stirring Speed | Stepless touch adjustment |
| Drift/Blank Subtraction | Automatic subtraction |
| Special Functions | Automatic drift compensation, automatic subtraction of ambient and background moisture, and self-diagnostic fault alerts |
| Display & Operation | Color touchscreen |
| Sample ID | Freely configurable sample IDs |
| Stored Records | 500 records |
| Printing | Built-in low-power high-speed thermal printer, 56 mm paper width |
| Printout | Displays different content according to the user's measurement formulas and results |
| Calendar/Clock | Current time, date, and test time/date displayed and printed |
| Endpoint Indication | Screen prompt / printout / audible alarm / end-point lamp |
| Operating Environment | Temperature 2 ℃–50 ℃, humidity <90% |
| Power Consumption | ≤50W |
| Unit Dimensions | 350mm*220mm*185mm |
| Power Supply | 220V 50HZ 150W |
| Weight | Main unit net weight 4 kg, 7 kg packed |
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 |
More
| 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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