Automatic Coulometric Kf Karl Fischer Titrator for Water (moisture) Determination

GD-3200Automatic Coulometric KF Karl Fischer Titrator for water (moisture) determinationIntroduction:GD-3200Coulometric Karl Fischer Titrator is the newly developed full-digital intelligent trace water tester by fully taking reference of the advantages of domestic and foreign similar instruments. based on coulometric titration principle, by adopting many advanced technologies and processes as well as brand new circuit topology structure design, GD-3200 Coulometric Karl Fischer Titratoris in accordance with many domestic and foreign standards, with advantages of high accuracy, quick electrolysis speed, short equilibrium time, accurate dummy deduct as well as accurate and reliable analysis result.Parameters:1. Electrolytic current: 400mA maximum
2. Measurement range: 3 - 999.9 mcg
3. Instrument resolution ratio: 0.1 mcg
4. Accuracy: 3mcg water ±20% 10mcg water±10% 100mcg water±1% more than 100mcg ±0.5% (sample introduction error is not included)
5. Display: 7 inch high definition true color touch screen (1024*600)
6. Printing: wide line thermal printing
7. Power supply: AC220V±10% 50Hz±5%
8. Power: 100W
9. Environment temperature: 0 - 50ºC
10.Environment humidity: ≤85%
11.Volume: 390*270*220
12.Weight: 6kg
Operational Principle:Reaction of Karl Fischer Reagent and water is:I2+SO2+3C5H5N+H2O--2C5H5N·HI+C5H5N·SO3...( 1 )
C5H5N·SO3+CH3OH--C5H5N·HSO4CH3 ...( 2 )
The reagent solution is mixed of iodine, pyridine, and methanol. Rest on the Faraday's law that the iodine which forms through the electrolysis on the anode has the direction proportion with electric charge quantity. The chemical formula is:
2I--2e--I2...(3)
From the formula 3, the iodine's molecule quantity equals to the water's. That's to see, according to the consumption of the iodine, we can know the water content of the test sample. The instrument adopts Faradic current automatic control system, can easily adjusts the Faradaic current, most to 200mA.
Pictures ofKarl Fischer Coulometer: