As the basic physical property of matter, density has become an effective tool for scientific research and industrial control. Pycnometer and hydrometer were once the most commonly used density measuring tools; However, with the continuous improvement of measurement requirements, rapid measurement and accurate measurement have become insurmountable problems for analysts. Meng Hui Company invented and manufactured the world's first digital densimeter (U-shaped oscillating tube method). In the following decades, Anton Paar has maintained a leading position in this field, and constantly innovated in technology, with a number of exclusive patented technologies. ?
Shanghai Meng Hui is a digital densitometer based on the principle of oscillating tube, which can quickly and accurately measure the density and density-related concentration of liquid, and provides a good solution for density testing of almost all liquid samples. It is widely used in petrochemical, daily chemical, battery, beverage, petroleum, pharmaceutical, flavors and fragrances, tobacco and other industries, blood research, nuclear industry and other fields. The new product can be connected with computer printers and refractometers to realize more comprehensive and powerful functional applications. At the same time, Anton Paar has also developed an online density/concentration measuring device, which is widely used in the production lines of beer, beverage, chemical and petrochemical industries all over the world. At present, Anton Paar's densitometer has 60,000 users worldwide, with a market share of over 80%. It is the only choice for world-famous scientific research departments, authoritative testing institutions, universities, multinational enterprises and related departments in the field of liquid density application. Moreover, Anton Paar's market share in the global beer analyzer field exceeds 95%, and its density meter is used as a standard quality inspection and research instrument by Coca-Cola bottling plants and R&D institutions all over the world. The best products, the best service and the most novel creation are the consistent traditions of Antopa, a European professional musical instrument company. On the basis of inheriting, developing and perfecting densitometers and related products, we have been innovating constantly, and recently we have popularized innovative products such as density/dynamic viscosity/kinematic viscometer and new soft drink analyzer.
The square of the oscillation period is proportional to the density of the liquid sample in the test tube. The design principle of U-shaped oscillating tube is based on this, and the calculation formula is as follows:
ρ? =? Answer? x？ P2-B？
ρ - ? Density? (density); ?
P -？ Period? (oscillation period); ?
The constants of A, B-U tubes are related to the mass and volume of U tubes. ?
Compared with the weight bottle and hydrometer, the U-shaped oscillating tube method has incomparable advantages:
Measurement of true density: not affected by air buoyancy and gravity; ?
High accuracy: not affected by human factors; ?
Small sample size: only 0.1~1ml each time; ?
Fast measurement speed: only 1 ~ 5 minutes each time, especially suitable for laboratory and online measurement; ?
Convenient for constant temperature control. ?