hydrometer, device for measuring some characteristics of a liquid, such as its density (weight per unit volume) or specific gravity (weight per unit volume compared with water).
What is hydrometer short answer?
A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.
Why do we use a hydrometer?
A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity.
What are the two uses of hydrometer?
A hydrometer is specifically used for measuring low-density liquids such as gasoline, alcohol and kerosene as well as high-density ones such as acids, brine and milk.
Is hydrometer used to measure humidity?
A hygrometer measures humidity, the amount of water vapour in air. A hydrometer, on the other hand, measures the density or specific gravity (SG) of a liquid by floating in the liquid.
What is a hydrometer Class 9?
A hydrometer is an instrument, used for measuring the relative density of a liquid directly and hence to test the purity. A hydrometer works on the principle of floatation. The hydrometer is an instrument used to measure the relative density (specific gravity) of liquids and the purity of the liquids.
How does a hydrometer measure sugar?
A hydrometer is placed in water and then in a number of carefully prepared sugar solutions of different known concentrations. The stem emergence in each solu- tion is measured. Then a line graph is prepared by plotting the stem emergence of each solution versus its corresponding concentration.
What is another term for hydrometer?
Hydrometer synonyms
In this page you can discover 4 synonyms, antonyms, idiomatic expressions, and related words for hydrometer, like: gravimeter, refractometer, hygrometer and ph-meter.
How do you measure alcohol content?
First, the liquid is poured into a tall container, often a graduated cylinder, and then the alcoholmeter/hydrometer is gently lowered into the liquid until it floats freely. Alcoholmeter is used to determine the volume of alcohol or proof.
What are the 3 scales found in a hydrometer?
The Triple Scale Hydrometer is the basic tool used by brewers and vintners worldwide for measuring sugar content, gravity and potential alcohol. The three scales used are specific gravity, Brix and potential alcohol. Simply float this in a sample of liquid and read where the liquid line meets the hydrometer.
How does a hydrometer measure density?
Operation of the hydrometer is based on Archimedes’ principle that a solid suspended in a fluid will be buoyed up by a force equal to the weight of the fluid displaced by the submerged part of the suspended solid. Thus, the lower the density of the substance, the farther the hydrometer will sink.
How many types of hydrometers are there?
Note that the three main types of hydrometers available on the market are triple scale hydrometers, thermohydrometers, and precision hydrometers. Accuracy, materials used, and additional accessories are also essential factors to consider.
What temperature is a hydrometer?
Most hydrometers are calibrated to 20°C, but some are calibrated to 15°C – any good hydrometer will have the calibration temperature marked. This calculator, when working with a hydrometer calibrated to 20°C, is accurate over the approximate range 0-60°C, and when calibrated to 15°C, approximately 0-55°C.
How do you check alcohol without a hydrometer?
While most people will use a hydrometer to check the alcohol levels, you can also use a refractometer, which measures how light bends through a liquid to determine the density. Refractometers may not be as accurate, but they allow you to use drops of a sample rather than a large amount.
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