Floating body density measurement method - Database & Sql Blog Articles

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The first step: weight correction

1) Plug in the power and warm up for 2 to 30 minutes. If the display does not display [0.00], press the [ZERO] key to return to zero.

2) Press and hold the [ZERO] key while the [0.00] is displayed until [CAL] is displayed.

Let go.

3) At this time, it indicates that the calibration mode has been entered. After a few seconds, [DL-100] will be automatically displayed and will continue to flash. At this time, place the 100g weight in the center of the measuring table. At this time, the machine will automatically correct it. When [100.00] is displayed on the screen, the correction is completed.

4) Remove the 100g weight and automatically return to the mode to be tested and display [0.00].

The second step: water temperature compensation

When setting the weight of the standard weight in distilled water, first set the actual temperature of the distilled water, and the specific gravity of the water will change with the temperature of the water, so it needs to be compensated based on the water 4 ° C gravity 1.0000. . For the temperature compensation coefficient of water, the unit has stored a memory value of 0-49 ° C. Before the test, the actual temperature of the water is measured by the temperature, and then the corresponding temperature is modified to the actual temperature measured by the thermometer. (When the water temperature differs by 6 °C, the specific gravity will differ by 0.001). The factory default temperature is 25 °C. . Press [C] for a long time to enter the temperature value modification and other solution value modification. The specific steps are as follows:

1) Press and hold the [C] key until the screen displays A1.

2) Press the [C] key again, the screen will display the number 25 flashing.

3) Press the [B] key to change the number, and press the [A] key to shift

Step 3: Floating body measurement (ie, sample with specific gravity less than 1)

1) Put the anti-floating frame on the hanging bar in the water, press the [ZERO] key to deduct the weight of the anti-floating frame (at this time, please note that the anti-floating frame must be submerged in water)

2) Pinch the sample on the measuring table with tweezers

3) Press [ENTER] when the stable symbol is displayed, [SAVE-A] appears, then [------] indicates that the weight of the sample is being stored in the air. When the memory is completed, the pointer points to M (weight in the air) )

4) Use a pair of tweezers to pick up the sample and wash it in alcohol.

5) Pinch the cleaned sample with tweezers and place it under the anti-floating frame in the water (at this time, please note that the sample must be pressed by the anti-floating frame). Since the specific gravity of the sample is less than 1, the display panel will display a negative number.

6) Press [ENTER] when the stable symbol is displayed, [------] appears, then [SAVE-B] appears to indicate that the weight of the sample in the water is being memorized. After the memory is completed, â–¼ points to the SG, which is the specific gravity value.

7) After recording the required data, press the [ENTER] key to return to the test mode and test the next sample.