What flowmeter is used for compressed air? | Which brand of compressed air flowmeter is more suitable

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What flow meter is used to measure compressed air? There are various instruments that can be used to measure air, but the actual air flow rate used on site is not diverse according to their principles. The most important ones are rotor flow meters, throttling differential pressure flow meters, vortex flow meters, and averaging tube flow meters.

1、 When measuring compressed air, flow meters are usually installed in compressor rooms and blower rooms, and the vibrations generated by the compressor and blower will be transmitted to distant places through air pipes or ducts. Vibration causes the vortex flow sensor to generate interference signals corresponding to the same vibration frequency, resulting in significantly higher flow readings.

2、 Compressed air is taken from the atmosphere, which always contains a certain amount of water vapor. A large-diameter orifice flowmeter used to measure compressed air flow often has accumulated water in front of the orifice plate, which can affect measurement accuracy. There is often a section of water in the pressure pipe, which causes the differential pressure measured by the differential pressure transmitter to be inconsistent with the differential pressure generated by the throttling device. These are common reasons for errors caused by air carrying water.

3、 The fluid at the outlet of compressors and blowers mostly contains some pulsation. Fluid pulsation can cause high readings in various flow meters such as differential pressure flow meters and vortex flow meters, resulting in rotor jumping up and down in rotor flow meters. In order to eliminate the influence of pulsation, a buffer tank is usually installed at the outlet of the compressor to filter out pul

sation, and the flowmeter is installed behind the buffer tank; Or install the flow meter away from the pulsation source.

4、 The averaging tube flowmeter has its unique advantages in measuring large caliber air flow, such as low price, simple and reliable, and easy installation and maintenance. It is a supplement to vortex flowmeters and throttling differential pressure flowmeters.

2. Domestic brands of compressed air insertion flow meters

The main brands of domestic compressed air insertion flow meters include Jingwei, Jiangsu Huaikong, Fenghui, and Jiangsu Huajie. Suitable models can be selected according to measurement range, accuracy, pressure, and temperature requirements.

2. Jiangsu Huaikong Jiangsu Huaikong Instrument Technology Co., Ltd. products, measuring range 0-100000 m ³/h, suitable for various gases, complete flange connection specifications, plug-in coverage for DN500 and DN500-1000 pipe diameters

3. Fenghui Putian Fenteng Network Technology Co., Ltd. sales, measuring range 0-9999 m ³/h, suitable for gas media, pipe diameter adaptation DN25-DN1200

4. Jiangsu Huajie Jiangsu Huajie Instrument Co., Ltd. products, accuracy level is gas ± 1.5% (insert) The working pressure can be selected from 1.6MPa to 6.4MPa, and the medium temperature covers -40 to 350 ℃ (divided into ordinary type, medium temperature type, and high temperature type).

3. Which brand is more suitable for choosing a compressed air flow meter?

When choosing a compressed air flow meter, you need to f

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