The liquid specific gravity balance belongs to the teaching instrument and is an indispensable liquid measuring instrument in the laboratory. There are many requirements in the use of liquid gravity balance, if it is not used properly, it will cause measurement error. Today, I'd like to give you a detailed introduction to the key points of the use of the liquid gravity balance
1. The balance should be adjusted before use.
2. Put the liquid to be tested into the glass measuring cylinder for testing.
3. Immerse the measuring hammer into the liquid in the glass measuring cylinder, and then the beam loses balance; various weights shall be added on the V-shaped groove and small hook of the beam to restore the balance of the liquid. At this time, the sum of the weights on the V-shaped groove and the small hook of the cross beam is the specific gravity value of the liquid measured.
4. After the liquid measurement is completed, all the weights on the V-shaped groove and small hook of the beam shall be removed, and the V-shaped groove and small hook of the beam shall not be left.
5. When the balance needs to move, the easily separated parts, components and beams should be disassembled to avoid damaging the knife.
6. According to the frequency of use, the cleaning work and measurement performance verification should be carried out regularly. When the balance is found to be distorted or in doubt, it should be stopped before the fault is cleared, and can be used only after the repair and verification are qualified.
Maintenance criteria for liquid gravity balance:
1. Regularly clean the blade and the agate knife seat with handkerchief and soft brush. It is forbidden to use coarse cloth and hard brush, and it is necessary to prevent scratch and damage.
2. When the balance needs to move, the parts, components and beams that are easy to be separated should be disassembled to avoid damaging the knife.
3. After measuring the liquid, all weights on the V-shaped groove and small hook of the beam shall be removed, and the V-shaped groove and small hook of the beam shall not be left.
