aerometerIt is a length measuring tool composed of pneumatic length sensor, indicator (table), air filter and regulator. Non-contact measurement can be made by using the gas momentum meter, and the measurement efficiency is very high. The air momentum meter is mainly divided into pressure type and flow type. Yileride focuses on the development and manufacturing of pneumatic instrument, and industrial automation control.

Pressure type

There are differential pressure water column type, bellows type (see length sensor), film type and bellows type.[Working principle of differential pressure water column type gas momentum meter]Is the working principle of the differential pressure water column gas momentum meter. Before measurement, two calibration ring gauges equal or close to the larger and smaller dimensions of the tolerance of the aperture to be measured (their actual dimensions have been accurately measured) are used, according to the magnification used.Adjust the upper and lower positions of the water column with the power trimmer valve and the zero position adjusting valve. During measurement, the gap caused by the difference between the actual size of the aperture to be measured and the size of the check ring gaugeS1andS2Changes, so that the pressure in the measured gas chamber also changes. The magnitude of the change is indicated by the height of the water column, and the deviation value of the measured aperture is read from the scale. Diaphragm type and diaphragm type constant gas momentum meter respectively use elastic elements such as diaphragm and diaphragm box as conversion elements. The displacement of the elastic element is caused by the change of pressure during measurement, and is indicated by the watch hand after being amplified by the lever gear mechanism. If an electrical contact is added to the end face of the elastic element, an electrical signal can be emitted for automatic measurement.

Flow type

The float and taper glass tube are used as conversion elements, so it is also called buoy type gas momentum meter. figure3[The working principle of the buoy type air momentum meter]Is the working principle of the buoy type air momentum meter. Its adjustment and use method is similar to that of the differential pressure water column air momentum meter. Due to gapS1andS2The change in air flow caused by the change is indicated by the upper and lower position of the float in the taper glass tube.

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