Is the electronic hydrometer the same as the Baume hydrometer
Electronic hydrometer is a special instrument for measuring the density of substances. It changes the tedious operation of traditional density testing and the error of the measurement results is very large. It combines modern microelectronic technology with Archimedes' principle to develop a new type of special measuring instrument for measuring the density of substances. This electronic hydrometer can meet In the process of modern product production and new material research, the precision of sample density is required, and the measurement can take only ten seconds to obtain the desired accurate data.
Electronic hydrometers can be divided into two categories according to status, namely solid electronic hydrometers and liquid electronic hydrometers. Solid electronic hydrometer is a special instrument for measuring the density of solids. It is widely used in powder metallurgy, rubber, plastics, wires and cables, composite materials, magnetic materials, precision ceramics, metal processing, precision chemical industry and other industries for the detection of the density of products and raw materials; liquid Electronic hydrometer is a special measuring instrument for measuring liquids. It is widely used in chemical solutions, full head energy, beverages and foods, flavors, fuels, fluxes, resin coatings, paints and inks, chemical reagents, laboratory research, adhesives, edible oils , Food additives, paraffin and other fluid liquids, viscous liquids, volatile liquids, corrosive liquids, high-temperature liquids, suspended liquids, emulsified liquids and other sample density measurement
Baume hydrometer is a hydrometer for measuring Baume. Baume (° Bé) is named in honor of a French chemist named Baume. Baume degree should be a method of expressing the concentration of a solution. The degree to which the Baume degree hydrometer is immersed in the measured liquid is the Baume degree.
There are two units of Baume degree: (1) Heavy Baume degree (Bh), the aqueous solution with a mass fraction of 15% of salt content is set to 15, and in pure water, it is equally divided into 14 and extends 15 or more;
(2) Light Baume degree (Bι), the indication value of an aqueous solution with a mass fraction of 10% floating in table salt content is positioned at zero,
In pure water, the value is set to 10, which is divided into 10 and extended to 10 or more.
The above is based on the temperature at 15 ℃ as the standard, and the numerical relationship with the density is:
Heavy Baume degree: Ï = 144.3 / 144.3-Bh g / cm3;
Light wave beauty: Ï = 144.3 / 144.3 + Bι g / cm3.
There are two kinds of Baume hydrometers: one is called a weight meter, which is used to measure liquid heavier than water; the other is called a light meter, which is used to measure liquid lighter than water. After the Baume degree is measured, the mass percentage concentration of the solution can be easily found from the comparison table in the corresponding chemistry manual. For example, the Baume degree of concentrated sulfuric acid measured at 15 ° C is 66 ° Bé, and the lookup table shows that the mass concentration of sulfuric acid is 98%. The methods for determining the Baume degree of different solutions are similar. They all use the method of determining specific gravity. According to the measured specific gravity, look up the table to convert the concentration.
Baume degree conversion
â—† The National Bureau of Standards adopts the following calculation formula for the proportion of Baume:
For Baume with liquid specific gravity <water
° Bé = 140 / SG-130 SG represents the specific gravity of liquid relative to water at 60 ° F (15.6 ° C).
For Baume with liquid specific gravity> water
° Bé = 145- (145 / SG) SG represents the specific gravity of liquid relative to water at 60 ° F (15.6 ° C).
â—† The current standard of Mido:
A. From Baume degree to specific gravity: the reference temperature is at 20 ℃ (68 ° F)
For liquids heavier than water: SG = 145 ÷ (145 – ° Be)
For liquids with lighter density than water: SG = 140 ÷ (° Be + 130)
B. Change from specific gravity to Baume degree: Heat or cool the solution until it approaches room temperature (68 ° F, 20 ° C).
For the liquid density is heavier than water: Be = 145-(145 / SG)
For liquids with lighter density than water: Be = 140 / SG -130
In general, the Baume hydrometer should be measured at a temperature of 15.6 degrees, but the temperature in actual use usually does not just meet the standard, so it needs to be corrected. Generally speaking, the temperature differs by 1 degree each, while the Baume degree differs by 0.054 degrees. Add when the temperature is higher than the standard, and decrease when the temperature is lower.
The Baume degree hydrometer is actually a liquid hydrometer, but the Baume degree hydrometer measures the Baume degree. The density value is obtained in the ordinary electronic hydrometer, and the ordinary electronic hydrometer only displays the density value on the instrument. The Baume degree hydrometer displays Baume degree directly after the test, and does not need to be converted by yourself. According to your needs, you can choose a suitable hydrometer. If you have other questions or purchase intentions, please contact our company Beijing Yitenuo Electronic Technology Co., Ltd.
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