Plastic specific surface area tester

Our company has developed a new type of fully automatic specific surface area measuring instrument FBT-9 based on GB/T8074-2008. The FBT-9 not only has the functions of the FBT-5 automatic specific surface area measuring instrument, but also adds the following functions on its original basis:

1. Users can freely adjust the porosity of the sample, and the measurement range is wider than that of FBT-5 type.

2. Users can also measure according to their needs Adjust the speed of the air pump by yourself.

3. The measurement accuracy has increased from four digits to five digits for the FBT-5 type, expanding the range of sample measurement.

4. FBT-9 typePlastic specific surface area testerIt adopts a LCD display screen, which displays Chinese intuitively and conveniently.

1Plastic specific surface area testertechnical indicators

1. Using highly reliable microcontrollers and integrated circuits, it automatically adapts to different temperatures, automatically detects the working status of the instrument, and ensures accurate and reliable measurement results;

2. Automatic detection of water level, automatic timing, automatic temperature measurement, automatic calculation and display of results;

3. Except for manual loading, the entire testing process is automatically completed to avoid human error;

4. Press the measurement button once to obtain a measurement result, and the operation is very simple;

5. Application scope: Applicable to the scope specified in GB8074-2008. Mid term improvement meets the current standard JC/T956-2014;

6. Measurement accuracy: relative error,<1%;

7. Temperature: 8-34 ℃;

8. Voltage:~220V ± 10%;

9. Inner diameter of breathable cylinder: 12.7mm;

10. Height of the sample inside the breathable cylinder: 15mm;

11. Number of holes in perforated plate: 35 (holes); Material: stainless steel;

12. Perforated plate aperture: φ 1.0mm.

2、 Instrument panel button function

【 SET 】 Measurement K value, S value parameter setting key

【】 Parameter Shift Key

[▲] Parameter Keying

【 ▼ 】 Parameter subtraction key

【 K value 】 Measure K value key

【 S value 】 Measure S value key

Measurement/Reset: Measurement and Stop of K or S Values

【 Memory 】 Check the specific surface area value of memory. Up to 50 specific surface area values can be memorized

3、 Inspection and calibration of instruments

1. Breathability test: Use a randomly distributed rubber stopper to tighten the conical mouth of the U-shaped pressure gauge. After setting the parameters, start the instrument and carefully observe whether the liquid level drops after the instrument stops. If there is no drop, it is considered normal.

2. Determination of the volume of the sample barrel using mercury displacement method

Please refer to the random attachment for the method of determining the specific surface area of cement using the Brinell method

GB/T 8074-2008 or JC/T956-2014

4、 Randomly attached

1. One copy of the user manual

2. One certificate of conformity

3. One national standard

4. Two U-shaped pressure gauges

5. One bottle of standard powder with specific surface area or negative pressure screening

6. One set of stainless steel material bucket

7. Standard diameter 12.5 filter paper 1 pack 2 floating balls

【 Brush, medicine spoon, water injection syringe. 1 rubber stopper each 】

5、 Fault phenomenon

ERR1 liquid level not reached. Drip a water droplet into the left end of the U-shaped pressure gauge using a syringe

Any one of the ERR2'ERR3'ERR4 'phototubes 234 is blocked from light. Clean the inner and outer walls of the pressure gauge

ERR5 detects a temperature greater than 34 ℃. ERR6 detects temperatures below 8 ℃

ERR7 calculation result is 0

ERR8 calculation result digit is greater than 9999, reload for measurement

ERR9 calculation result with digits less than 0.001

The fully automatic specific surface area analyzer measures mercury density, air viscosity, and... at different temperatures

6、 Determination of the volume of the sample layer

Measure the volume of the sample layer using the following mercury displacement method

A、 Place two pieces of filter paper along the wall of the cylinder into the breathable cylinder, press down with the big end of the push rod (Attachment 1) until the filter paper is placed flat on the perforated plate, then fill it with mercury, lightly press the surface of the mercury with a thin glass plate until it is level with the upper opening of the cylinder, pour water silver out of the cylinder, weigh it, and record the mercury mass P1.

B、 Take out a piece of filter paper from the cylinder, add an appropriate amount of powder, cover it with a layer of filter paper, and compact it with a tamper until the support ring of the tamper contacts the top edge of the cylinder. Remove the tamper and add mercury to the upper space of the cylinder, using the same method as above to make the mercury surface level with the upper opening of the cylinder. Then pour out the mercury and weigh it, recording the mercury mass P2 with an accuracy of 0.5g

C、 Calculate the volume occupied by the sample layer using the following formula: (accurate to 0.005cm3)

V=(P1-P2)/ρ Mercury

Where:

Volume of V sample layer (cm3);

When the P1 cylinder is not filled with material, the mass of mercury filled in the cylinder (g);

After loading the P2 cylinder, the mass of mercury filled in the cylinder (g);

Density of mercury at the temperature of the mercury test (g/cm3);

The measurement of the volume of the sample layer should be carried out at least twice, and each time it should be compacted separately. The average value of the two values should not exceed 0.005 cm3.