Karl-Fischer Coulomb method is widely used for precise measurement of trace moisture content in samples. This method has the advantages of high accuracy and low cost. Based on the principle of Karl-Fischer coulometric titration, the instrument can accurately determine trace moisture in liquid, solid and gas, and is used in power, petroleum, chemical, pharmaceutical, food and other industries. It meets the national standard GB7600.

1. Instrument Accuracy

 

Precision of Electrolytic Water Volume

 

10ug~1000ug +2ug

 

> 1000ug 0.2%

 

2. General electrical parameters

 

Measurement range: 0ug-100mg

 

Resolution: 0.1ug

 

Maximum electrolysis speed: 40ug/s

 

Power supply voltage: AC220V + 20%

 

Maximum power consumption: 30W

 

Use ambient temperature: 10-35

 

Use ambient humidity: <85%

 

Shape size: 320 x 240 x 150 mm

 

Net weight of instrument: 5kg

 

3. Assessment of instrument power consumption and battery power supply time (portable instrument with battery, optional)

 

The test condition of maximum power consumption of the instrument is that when the instrument works in the external power supply, the maximum charging current is used to charge the battery in the machine, and the maximum electrolytic current is used to measure it.

 

When the battery is powered in the machine, the static power consumption of the instrument is about 0.2A. The working time of the instrument can be evaluated by referring to the following examples:

 

The total power consumption of the instrument is about 0.375A. When the battery capacity is 3Ah, it can work for 3/0.375 = 8 hours. At this time, the total amount of water in the electrolysis is 10ug/s*3600s*8h = 288mg.

HYG-809B micromoisture analyzer uses a powerful new generation of processors and a new peripheral circuit with excellent low power consumption. As the criterion of electrolysis termination, the stability and accuracy of the measured electrode signal are the key factors affecting the measurement accuracy. Because of the use of advanced devices and methods, the accurate detection of the measured electrode signal is realized. A new software compensation correction algorithm is proposed to improve the measurement accuracy. The display interface of Chinese graphics LCD is intuitive and friendly.

 

Note: Users can choose batteries according to actual needs in order to achieve portable functions!

 

The main features are as follows:

 

It uses 240X128 graphical dot matrix liquid crystal, no mark button, friendly interface.

 

The switch constant current source electrolytic circuit (patented technology) is used to reduce the power consumption of the instrument.

 

Portable instruments with batteries (optional) can be used continuously for more than 8 hours under normal test condition after the batteries are fully charged, and have the function of battery power detection and display.

 

The high-precision measuring electrode signal generation and detection circuit makes the judgment of electrolysis end point fast and accurate, and has strong anti-interference ability.

 

Blank current compensation and equilibrium drift compensation are used to correct the measurement results.

 

Three calculation formulas are available for users to choose and automatically calculate water content.

 

10-speed stirring speed regulation; 10-speed electrolysis gain regulation;

 

It has the function of automatic detection of open circuit fault and short circuit fault of measuring electrode.

 

Automatic storage of historical records with time markers, up to 255;

 

Calendar clock with temperature compensation, accurate travel time, automatic recording of the measured date and time can run for more than 10 years when power is off.

 

With screen protection function, long time no operation of the instrument, automatically turn off the LCD screen, prolong the life of LCD, press any key to exit the screen protection state;

 

With USB interface, it is convenient to communicate with computer.