－1－
1 Prior to use
In adiition to the operating precaution of the balance body, following precautions shall be taken care for the specific gravity
measurement kit.
1-1 Operating precautions
■Do not use/measure flammable liquids which generate e plosive gases, vapor or
fog.
That may cause explosion or fire. A balance with explosion-proof structure shall be used to handle with
such a flammable liquid.
■Do not install the balance on unstable or vibrating location, do not move the balance
with a water tank set on it, especially when handling with hazardous liquids.
Specific gravity measurement kit is not fixed to the balance, so that improper installation, carrying or
operation may cause spilling of the hazardous liquids and lead to serious accidents.
■Take care not to spill water or liquid in the windshield.
If a large amount of water or liquid is spilled in the windshield, they may enter inside the balance and
cause shortsircuit or failure.
1-2 For more accurate measurement
1-2-1 Precautions related to a specimen and medium liquid
Unsuitable
specimen
→
Specimen that is pneumatic, foamable or solubility cannot be measured accurately
with this product.
Magnetism →
Specimens affected by strong magnetism repels diamagnetic liquid, and that lead to
an error of the measuring result.
Foam/bubbles
on the
specimen
→
Foam or bubbles produced on the specimen or the glass weight causes an error of
the measuring result.
If water is used as the medium, add one or two drops of surface-active agent (liquid
detergent for kitchen use . It will effectively prevent air bubbles from adhering to any
measurement object.
Temperature
difference
→
Difference in temperature between the specimen and the medium liquid generates
convection flow within the water tank, causing a measurement error.
Accuracy of
the water
temperature
→
When water is used as the medium, the accuracy of temperature of the water input
into the balance affects accuracy of the measurement.
Check the water temperature as frequently as appropriate.
1-2-5 Precautions related to the specific gravity measuring kit
Undesired
contact with
measurement
pan
→
You should be careful not to leave the thermometer in the water tank. It may hit the
pan submerged in water to result in inaccurate measurements. When water
temperature is to be measured, once remove the water tank from the balance.
