Karl-Fischer coulometric titration is widely used for the accurate 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 0.3%

 

2. General electrical parameters:

 

Measurement range: 0 ug-100 mg

 

Resolution: 0.1ug

 

Electrolytic current: 0-400 mA

 

Maximum electrolysis speed: 2.4 mg/min

 

Power supply voltage: AC220V + 20%

 

Maximum power consumption: 30W

 

Use ambient temperature: 5-35 C

 

Use ambient humidity: <85%

 

Shape size: 350 x 260 x 180 mm

 

Weight: 6kg

 

3. Assessment of Instrument Power Consumption and Battery Power Supply Time (Portable Instrument with Battery)

 

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 the maximum power consumption. At the same time, the printing operation is carried out.

 

It is suggested that the printing operation should not be performed when the battery is used as power supply. At this time, the static power consumption of the instrument is about 0.4A. The working time of the instrument can be evaluated by referring to the following examples:

 

Assuming 107.22 mA electrolysis current (electrolysis speed is 10ug/s), the total power consumption of the instrument is about 0.5A. When the battery capacity is 3Ah, the working time is 3/0.5=6 hours. At this time, the total amount of water in the electrolysis is 10ug/s*3600s*6h=216mg.

HYG-809C 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:

 

320x240 graphical dot matrix LCD display and touch keys are adopted, which make the man-machine interface friendly.

 

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

 

The battery in the instrument (optional) can be used continuously for more than 6 hours under normal working conditions after the battery is fully charged.

 

Perfect in-machine battery charging circuit, and battery power detection and display function; (portable instrument with battery)

 

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.

 

The blank current compensation of electrolyte and the drift compensation of equilibrium point are used to correct the measurement results.

 

The measured electrode signal is displayed in bar pattern on LCD, which can directly indicate the water content of electrolyte.

 

In the process of electrolysis, the curve of electrolysis speed versus time is drawn in real time. Users can monitor the whole process of electrolysis and judge whether the electrolyte is invalid or not according to the curve.

 

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 with time-stamped historical records, up to 500;

 

Calendar clock with temperature compensation, accurate travel time, automatic recording of the measured date and time, in the power-off state can run for more than 10 years;

 

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