WS-3 type automatic micro moisture analyzer

WS-3 typeMicro moisture automatic analyzerReliable determination of trace water in liquid, gas, and solid samples using Karl Fischer Coulomb electrolysis method. It has fast measurement speed, high accuracy, accurate and reliable data, and simple operation, suitable for production operators and researchers. Mainly used in departments such as petroleum, chemical, power, medicine, pesticides, environmental protection, geology, etc. WS-3 typeMicro moisture automatic analyzerFeatures: Digital display, fast measurement speed, high accuracy, accurate and reliable data, simple operation.Applicable standard: GB/T7600 (ASTM D323).Applicable to petroleum and chemical products, determination of trace moisture in insulation oil of insect oil electrical equipment

WS-3 typeMain technical indicators

Method used: Karl Fischer Coulombic electrolysis method
Electrolysis method: Electric titration method Electrolysis current: 0~300mA
Measurement range: 10 micrograms to 100 milligrams of water
Sensitivity threshold: 1 microgram of water
Accuracy: 10 micrograms to 1 milligram of water, not exceeding 5 micrograms; More than 1 milligram of water, not more than 0.5%
Power supply: AC220V ± 10% 50Hz ± 1Hz
Weight: 5kg

WS-3 typeworking principle

The reaction between Karl Fischer reagent and water is:

Ｉ2 + SO2 +3C5 H5 N+H2 O2C5 H5 N·HI+C5 H5 N·SO3 . ..(1)

C5 H5 N·SO3 OHC5 H5 N·HSO4 CH3 . .............(2)

In the Karl Fischer Coulomb electrolysis method, the sample is added to the reagent and the iodine produced by electrolysis reacts with the water in the sample at the anode. According to Faraday's law, iodine is produced directly proportional to the amount of electricity.

2Ｉ－ 2ｅＩ2

1 mole of iodine reacts quantitatively with 1 mole of water, therefore, 1 milligram of water is equivalent to 10.71 coulombic charges

According to this principle, the water content can be directly determined from the amount of electricity required for electrolysis, and the moisture content of the measured sample can be displayed directly on the monitor through instrument calculation.