Karl Fischer Moisture Analyzer

I. Features

An original imported 7.0-inch 800×480-pixel true-color TFT-LCD large-screen color display is adopted; the keyboard uses a human-body-sensing touch screen with a full Chinese operating interface. The software interface is intuitive and generous with rich content, convenient and free operation and Chinese character prompts, featuring high detection sensitivity, simple operation, fast testing speed and good repeatability.

The instrument has the functions of storing, printing and calculating test results; the sample determination process is automatically controlled by the instrument, and stirring and determination are completed automatically in about 60 s, directly displaying the result. A fully sealed titration cell bottle avoids reagent contact with personnel and also the influence of ambient humidity. The instrument has a Chinese LCD display with automatic calculation and printing functions, capable of printing the percentage content, sample number, test operator, test date, etc. Instrument accuracy: ① when the water content is less than 10 µg, the measurement error is less than 2 µg water; ② when the water content is 10-1000 µg, the measurement error is ≤2 µg water; ③ when the water content is above 1000 µg, the measurement error is ≤0.2% (excluding injection error).

The core main unit uses a TI AM3354 processor with a Cortex-A8 core and 1 GHz main frequency; the operating system uses the Windows Embedded Compact 7 real-time industrial control system, completely abandoning the coreless, OS-less bare-metal single-chip approach and truly realizing the modernization of instrument control, bringing the instrument into a new intelligent era.

II. Main Features

1. Capable of trace analysis of low-content samples with high sensitivity.

2. Can store 20,000 test results; a unique alternating-balance isolated detection technology makes balance detection faster, more accurate and more stable; the electrolysis circuit adopts advanced PWM pulse-width modulation technology, greatly reducing overall power consumption.

3. Friendly human-machine dialogue with a touch-screen human-machine interactive interface.

4. Display clock (year, month, day, hour, minute, second) with power-off retention.

5. Printer: an embedded thermal printer with 36 characters and Chinese character output; printing is quieter, faster and clearer.

6. Program-controlled, with the stirring speed directly adjusted by entering numbers on the interface.

7. Multiple formula options with automatic switching of display units (µg, mg/L, ppm, %) and memory.

III. Technical Parameters

1. Display: 7.0-inch LCD color large-screen touch display

2. Measurement range: 0.0001% (1 ppm) to 100%

3. Sensitivity threshold: 0.01 µg H₂O

4. Accuracy: ±2 µg for 5 µg-1 mg; 0.2% for above 1 mg (excluding injection error)

5. Test result: Printout

6. Power: <60 W

7. Operating environment: Temperature 5 ℃-40 ℃

8. Humidity: <85%

9. Dimensions: 385 × 290 × 280 (mm)

10. Power supply: AC 220 V ±10%, 50 Hz ±5%

11. Weight: Approx. 8 kg

IV. Applicable Standards

1. GB/T 7600 "Determination of water content in transformer oils in service (coulometric method)"

2. GB 6283 "Determination of water content in chemical products - Karl Fischer method (general method)"

3. SH/T 0246 "Determination of water content in light petroleum products (electrometric method)"

4. SH/T 0255 "Determination of water content in additives and additive-containing lubricating oils (electrometric method)"

5. GB/T 11133 "Determination of water content in liquid petroleum products (Karl Fischer method)"

6. GB/T 7380 "Determination of water content of surfactants (Karl Fischer method)"

7. GB 10670 "Determination of trace water in fluoromethanes for industrial use - Karl Fischer method"

8. GB/T 606 "General method for the determination of water content in chemical reagents - Karl Fischer method"

9. GB/T 8350 "Denatured fuel ethanol"

10. GB/T 8351 "Ethanol gasoline for motor vehicles"

11. GB/T 3776.1 "Determination of water in pesticide emulsifiers"

12. GB/T 6023 "Determination of trace water in butadiene for industrial use - Karl Fischer coulometric method"

13. GB/T 3727 "Determination of trace water in ethylene and propylene for industrial use"

14. GB/T 7376 "Determination of trace water in fluoroalkanes for industrial use"

15. GB/T 18619.1 "Determination of water content in natural gas - Karl Fischer coulometric method"

16. GB/T 1600 "Determination of water in pesticides"

17. GB/T 11146 "Determination of water content in crude oil (Karl Fischer coulometric method)"

18. GB/T 12717 "Test methods for industrial acetate esters"

19. GB/T 18826 "1,1,2-tetrafluoroethane (HFC-134a) for industrial use"

20. Meets the technical requirements of the national pharmacopoeia regarding the determination of water content in drugs by the Karl Fischer method.

21. GB/T 512 "Determination of water in lubricating grease"

22. GB/T 5074 "Determination of water in coking products"

23. GB/T 260 "Standard test method for water in petroleum products"