XJWS Insulation Oil Micro Water MeterProduct Introduction

The XJWS micro water analyzer is a newly developed instrument for measuring and analyzing trace moisture. The instrument adopts a high-resolution color touch LCD display, which is convenient, intuitive, and easy to operate for human-machine dialogue. The instrument adopts a high-performance ARM processor with large data storage capacity, fast and stable operation, and excellent anti-interference performance, which has outstanding advantages of fast detection speed and high accuracy. The instrument has a fault self diagnosis function. After the test is completed, the measurement results will be displayed and printed. The instrument has the function of measuring potential dynamic curve indication, making the testing status more intuitive; The instrument has a large data storage capacity and can store up to 1000 data records; The instrument has a delay measurement function, which is very effective in testing samples with low moisture content; The instrument adopts sliding touch mixing speed regulation; The formula for calculating moisture content includes multiple algorithms based on key parameters such as volume and weight; During the testing process, if it is necessary to modify the relevant parameters of the calculation formula, it can be done in a timely manner without affecting the moisture measurement results. The moisture content is calculated according to the newly modified parameters, which is convenient for users to use.

XJWS Insulation Oil Micro Water MeterThe Karl Fischer coulometric titration method can reliably determine trace amounts of moisture in liquid, gas, and solid samples. During testing, for solids that are insoluble in reagents and substances that are prone to contaminating electrodes and reagent reactions, corresponding solid, gas, and liquid samplers can be used for indirect measurement. It is an efficient and fully automatic analytical instrument. Widely used in industries such as power, petroleum, chemical, pharmaceutical, railway, environmental protection, scientific research institutions, etc.

Technical Parameter

Titration method: Electric titration (Coulombic analysis)

Measurement range: 0ug~100mg (typical value 10ug~100ug)

Sensitivity threshold: 0.1ug

Accuracy: 100ug ± 3ug, not exceeding ± 3% above 500ug (excluding injection error and environmental humidity error)

Sample type: Solid, Liquid, Gas

Display mode: 64K color high-definition touch display

Data storage: 1000 test records

Status indication: dynamic curve, text display

Mixing speed regulation: sliding touch panel speed regulation

Date and time: Can work normally for 10 years after power failure

Printer: Micro thermal printer

Power supply: AC 220V ± 10V, 50Hz ± 2.5Hz

Power: 50VA

Operating environment temperature: 5-35 ℃

Operating environment humidity: ≤ 85%

Dimensions: 330mm X 260mm X 220mm (length x width x height)

The reaction equation between Karl Fischer reagent and water is:

I2+SO2+3C5H5N+H2O——2C5H5N·HI+C5H5N·SO3……（1）

C5H5N·SO3＋CH3OH——C5H5N·HSO4CH3……（2）

The reagent solution used is a mixture of dominant iodine and pyridine, methanol, etc. filled with sulfur dioxide. Iodine is formed on the anode through electrolysis, and all generated iodine is directly proportional to the amount of charge according to Faraday's law. The following formula:

2I--2e——I2……（3）

From equation (1), it can be seen that the number of moles of iodine participating in the reaction is equal to the number of molecules of water. Injecting the sample into the electrolyte, the moisture in the sample participates in the reaction, and the consumption of iodine during the process can be reflected by the instrument. The consumption of iodine can be calculated based on the amount of electricity required to electrolyze the same amount of iodine. After calculation by the instrument, the moisture content in the tested sample is directly displayed on the display screen. The instrument adopts an automatic control system for electrolysis current, and the size of the electrolysis current can be automatically adjusted according to the moisture content in the sample, up to 300mA.