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Product Detail

SEL clay blue measuring instrument

Model SEL
Power requirement AC220V±10%,50Hz
Product Details


SEL-A microcomputer control clay absorption blue experiment instrument

It is mainly used to determine the amount of bentonite blue and the effective bentonite content in the molding sand, and to quickly and effectively detect the quality of the bentonite, so as to avoid surface defects of the casting after use.

(A), the main performance of the instrument

It is a microcomputer to control the ultrasonic divergence and the stirring of the test solution, the sample processing and the stirring time are automatically controlled and displayed, and the time can be arbitrarily set by the microcomputer. Equipped with two sets of burettes, while controlling the titration of methylene blue titrant. The sample is treated by ultrasonic dispersion method, and the sample can be quickly dispersed at normal temperature. The measuring device is equipped with an automatic titrator and mechanical stirring.

The methylene blue clay analyzer is mainly composed of a sample dispersing device, a mechanical stirring and a titration device. The two units are independent and can work simultaneously, with the microcomputer controlling the dispersion processing and mixing time separately. Its structure:

(1) The sample dispersion device is composed of an ultrasonic cleaner (ultrasonic disperser), an accessory, and a timer. Ultrasonic cleaner (model MJ-50) is a small desktop full-transistor circuit ultrasonic device. The device uses a ceramic material of pressure point - aluminum zirconate titanate transducer, which has high conversion efficiency, good dispersion effect, low noise, and power. The consumption is also small. The ultrasonic cleaner can be used alone.

(2) Titration device

The automatic titrator has two automatic burettes, a burette 1 and a burette 2. The burette 1 is controlled by a "titration switch" and a high performance anticorrosive solenoid valve DZ1 to control the titration of the methylene blue solution; the burette 2 squeezes the glass beads by hand to titrate the methylene blue solution. When two burettes are used simultaneously, the milliliter of the titrant must be read and added simultaneously. The solution bottle can be used with a 500ML small-mouth reagent bottle or a 1000ML small-mouth reagent bottle. After adding the methylene blue solution to the reagent bottle, the high-performance anti-corrosion solenoid valve DZ2 is controlled by the “liquid-filling switch”, and the gas source is pressurized by the DZ2 to make the methylene blue solution simultaneously. Burette 1 and burette 2, when the solution is filled with the burette. Release the “Dosing Switch” and return the solution to the solution bottle. The titrant is automatically zeroed.

(3) agitator

The working time of the AC motor is controlled by a microcomputer, and the coupling shaft is connected to the stirring shaft to fully stir the test liquid through the turbine piece.

(II) Main technical indicators

Measuring device

1) Burette 25ml +25ml accuracy ± 1%;

2) stirrer speed: 1300r/min; AC220V±10%, 50Hz; power: 6W;

3) Timing range 0~99 minutes;

2. Sample Dispersion Device (Ultrasonic Disperser Model 50)

1) Ultrasonic frequency: 40 ± 2 kHz;

2) output power 50W;

3) Power supply AC220V ± 10%, 50Hz;

4) Dispersion groove size (length × width × height) 150 × 140 × 95mm

5) Dimensions (length × width × height) 177 × 167 × 200mm

3. Power source: AC220V±10%, 50Hz;

Users must bring their own experimental equipment:

2000ml brown ground glass (methylene blue solution); 2, reagent: methylene blue (25g), sodium pyrophosphate; 3, 2000ml grinding bottle (or plastic bottle); 4, 1000ml volumetric flask, funnel; 5, medium speed qualitative Filter paper; 6, 50ml measuring cylinder (or pipetting bottle), etc.

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