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Huazheng HZKF-2 Trace Moisture Analyzer Oil Water Content Tester
The analyzer can quickly determine the moisture content in a wide range of products, including alcohols, oils, lipids, ethers, esters, acids, alkanes, benzenes, amines, organic solvents, pesticides, phenols, and pharmaceutical raw materials. It is suitable for applications in chemical, petroleum, pharmaceutical, and pesticide industries.
I.Main Features and Advantages
The instrument adopts a powerful new-generation processor and new peripheral circuits, ensuring excellent low power consumption. The measuring electrode signal serves as the criterion for the end of electrolysis, making its stability and accuracy key factors affecting measurement accuracy. Accurate detection of the measuring electrode signal is achieved through the use of advanced devices and methods.
Further understanding of the reagent's characteristics led to the development of a new software compensation correction algorithm, which improves measurement accuracy. The instrument features a Chinese character graphic LCD display with an intuitive and user-friendly interface.
Main functions and features:
1.High-resolution color 480×272 dot matrix color touchscreen LCD with a Chinese man-machine dialog interface.
2.Switching constant current source electrolysis circuit (patented technology) to reduce instrument power consumption.
3.High-precision measurement electrode signal generation and detection circuits ensure fast and accurate judgment of the electrolysis endpoint, with strong anti-interference capabilities.
4.Two methods for correcting measurement results: reagent blank current compensation and equilibrium point drift compensation.
5.Nine built-in calculation formulas to meet moisture content calculations under various measurement conditions.
6.One injection can be converted into mg/L, ppm, mg/kg, %, % to reduce the number of measurements and reagent consumption. The moisture content conversion unit can also be specified.
7.Adjustment of sample volume, mass, and density can be performed during or after the test.
8.Nine-speed stirring speed adjustment; nine-speed electrolysis gain adjustment.
9.Automatic detection and recording of measuring electrode open-circuit and short-circuit faults.
10.Automatic storage of historical records with time stamps.
11.Reserved RS232 and RS485 ports for communication with a computer.
II. Technical Indicators
1.Accuracy: 3μg to 1mg ±3μg; 0.3% above 1mg (excluding injection error)
2.Measuring range: 3 μg to 100mg
3.Resolution: 0.1μg
4.Electrolytic current: 0 to 400mA
5.Maximum electrolytic speed: 40μg
6.Power supply voltage: AC220V ± 20%
7.Standby power consumption: 5W
8.Ambient temperature: 5 to 40°C
9.Ambient humidity: <80%
10.Overall dimensions: (320 × 240 × 200) mm
11.Weight: 4.5kg
III. Working Principle
The reagent solution is a mixture of the predominant iodine and sulfur dioxide-filled pyridine and methanol. The reaction of the reagent with water is based on the principle that iodine is reduced by sulfur dioxide in the presence of water to form pyridine hydroiodide and pyridine methyl hydrogen sulfate in the presence of pyridine and
methanol. The reaction formula is:
H20+I2+SO2+3C5H5N → 2C5H5N·HI+C5H5N·SO3
C5H5N·SO3+CH3OH → C5H5N·HSO4CH3
During electrolysis, the electrode reactions are as follows:
Anode: 2I- - 2e → I2
Cathode: I2 + 2e → 2I-
2H+ + 2e → H2↑
The iodine produced by the anode reacts with water to form hydriodic acid until all the water has been reacted, and the end point of the reaction is indicated by a pair of platinum electrodes in a detection unit. According to Faraday's law of electrolysis, the number of molecules of iodine participating in the reaction is equal to the number of molecules
of water, which is proportional to the amount of charge. The equation for water quantity and charge is as follows:
W=Q/10. 722
Which, W -- moisture content in the samples Unit: micrograms
Q-Electrolytic amount unit: millicoulombs
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