HYPS MD301 Density Tester

 Technical parameters
1, display device: color touch monitor
2, temperature control range: 0-100
3, control accuracy: 0.05
4, heating power: 1500W
5, plus cooling medium: water or ethanol
6, cold bath hole number: 2 hole
7, power source: AC220V 10%
8, frequency: 50Hz + 2.5Hz
Three. Working principle
     The instrument according to the method of GB/T 1884-2000 requirements heater is controlled by the CPU, a refrigerator of the water bath temperature control, blue LCD display state, temperature and setting value. When the water bath temperature reaches the set value, the sample into a temperature of approximately the same density measuring cylinder, will be suitable density meter into the modulated temperature in the sample, let it rest. When the temperature reaches equilibrium, the reading density meter reading and sample temperature, using the oil meter to observe the density meter readings converted into standard density.
1 using method
Connect the AC power to the power socket, turn on the power switch display

According to the menu, you can set the corresponding parameters.
Step 1.
1, with alcohol, petroleum ether thoroughly clean the density of the measuring tube, after washing into the oven drying.
2, open the machine, set a good test temperature 20 degrees, press the start button, the instrument starts automatic temperature control.
3, when the instrument reaches the set temperature, the test sample into the density of the measuring tube, and into the instrument in a constant temperature bath. Also instrument automatic pop-up "timing" interface, set timing time (typically set 10 min), time to time (objective is to balance test and water bath temperature). When the time to the instrument buzzer alarm, press any key to exit.
4, the appropriate density meter into the reagent, to reach the equilibrium position, let go, let the density of the freedom of the float, pay attention to avoid the dry tube above the liquid level. The density meter according to equilibrium following 1mm or 2mm, and let it return to the balance position, the observation of the shape of the meniscus, if changing the shape of the moon should be cleaning density meter dry pipe, repeat this operation until the meniscus shape remained unchanged.
5, for opaque viscous liquid, to wait for the density meter slowly sinking into the liquid; for the transparent low viscosity liquid, the density gauge pressure into the liquid about two scale, and then release. As the excess liquid on the stem tube may affect the reading, the above part of the density meter should be reduced as far as possible.
6, in the open, to gently turn the density meter, so that it can be left in the cylinder wall where the rest of free floating. To have sufficient time to allow the density to rest, and let all the bubbles rise to the surface, before reading a clean filter paper to remove all the bubbles formed on the surface of the sample.
7, when the density meter away from the cylinder wall free floating and static, according to Article 8 or 9 read density meter scale value, read most close to 1 / 5 of the interval scale.
8, determination of transparent liquid, to make the eyes slightly below the liquid level position, slowly rose to the surface, to see a is elliptic and become a and density meter scale tangent line (see Figure 1). The point density meter readings for the liquid level and density of the main scale

1.Determination of opaque liquid, so that the eyes slightly higher than the level of the location of the observation (see Figure 2). The point density meter readings for the edge and density of the liquid meniscus on the scale.

Maintenance of instruments
1, the instrument in the use process when there are faults, do not mess tamper, should look for a professional and technical personnel of maintenance, if still can not solve, please call after-sales hotline, to timely repair.
2, the instrument is not allowed in the wet, corrosive gas in the environment for storage or use.