The industry standard requirements for silent oil-free air compressors for laboratories

  The industry standard requirements for silent oil-free air compressors for laboratories

As we all know, experimental equipment is mostly high-precision instruments, with continuous work stability, simple operation, safe use, environmental protection and energy saving. At the same time, in order to create a good working environment for laboratory workers, the noise control requirements are particularly high. Therefore, air compressors that provide air supply for experimental equipment are more different than general industrial air compressors.

The author has been engaged in the theoretical research of laboratory air compressors for many years, and now provides some suggestions on how to properly select laboratory air compressors for your reference.

1 , parameter matching

Work pressure control : What is the air pressure needed to work? At present, most of the air compressors used in laboratories are adjustable at 0-8 BAR (approximately 0-8 kg), which meets the pressure requirements of most experimental equipment.

Constant and stable displacement (usually expressed in L/MIN ): refers to the number of liters of gas flow per minute at the rated working pressure, and the need for continuous and stable gas flow. Therefore, the operational stability of the compressor is very high. At present, many brands on the market are mixed, so when choosing, they should consider the products of well-known brand manufacturers with mature technologies, such as the DYNAIR-Dasun laboratory-specific air compressor.

2 , compressed air quality

The oil-free air compressor is the first choice: the material of the oil-free air compressor machine itself does not contain oily substances, and it does not need to add any lubricating oil during the work, thus greatly improving the quality of the discharged air, and guaranteeing the safety of the equipment required by the user. Unlike oil air compressors, because the exhaust gas contains a large number of oil molecules, it will cause different degrees of corrosion of the user's equipment, so the choice of oil-free and silent air compressor is necessary to ensure the air quality. After configuring the air filtration device, the air quality should meet the following international standard values:

2.1 Solid particles

grade

Maximum particle size
Îœm

Maximum concentration
Mg/ cubic meter

1
2
3
4

0.1
1
5
40

0.1
1
5
10

  See the table below for solid particle size and concentration ratings.

2.2 Water
The water vapor content in the air is represented by the pressure dew point, and the pressure dew point grade is shown in the table below.

grade

Highest pressure dew point
°C

1
2
3
4
5
6

-70
-40
-20
3
7
10

Note:

grade

Maximum oil content
Mg/ cubic meter

1
2
3
4
5

0.01
0.1
1
5
25

( 1 ) The particle size depends on the filter ratio βn=20 (the minimum accuracy of the measurement method is usually 20% of this limit).
( 2 ) Concentration of ion concentration is absolute pressure 0.1MPa temperature 20°C , relative steam pressure 0.6

2.3 Total oil (including oil droplets, suspended particles, oil vapors)

  Note: absolute pressure of oil content 0.1MPa , temperature value="20" hasspace="False" negative="False" numbertype="1" tcsc="0" w:st="on"> 20°C , relative steam pressure 0.6 Oil content under conditions.

3 , noise control

Industry standards stipulate that the noise of laboratory air compressors should be controlled within 60 decibels to ensure that the experimental operators are in a relatively quiet work environment. It is recommended to select a laboratory air compressor with a noise level of about 50 decibels.

4 , safe, light, easy to operate

As a pressure equipment, air compressors must meet the requirements in terms of safety. They must pass national certifications such as ISO9001 , pressure vessel certificates, and internationally recognized CE certifications. In use, of course, the simpler and lighter the better the operation.

According to authoritative surveys : Currently on the market, in addition to Germany, Denmark and other countries in Europe and the United States production laboratory air compressors, the country's key support for export-oriented enterprises - a laboratory dedicated manufacturer of silent oil-free air compressors - Shanghai Hao Luo workers Trade Co., Ltd., through the introduction of foreign advanced production technology, development and production of "DYNAIR Da Sheng " DA series of laboratory quiet oil-free air compressor, fully meet international standards, and even better than some of the performance of foreign products. The brand products have been widely used in China's national defense science and technology, aerospace science and technology, the State Key Laboratory, petrochemicals, pharmaceuticals, chromatographic analysis, university laboratories and other fields, filling the gap that China can not produce high-tech laboratory air compressors. Great savings for domestic users.

Let us be proud of having such a national brand.