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Installation and selection of instruments for magnetic flap level gauge

Time: 2012-10-11 09:15:01 source: Author:

[friendly tips] this article“ Magnetic level gauge "Supporting instrument scheme" was originally created by Jiangsu meiante Automation Instrument Co., Ltd., please indicate the source of reprint. ?????

Magnetic level gauge With upper and lower limit switch output, remote alarm and limit control can be realized. The magnetic flap level gauge is equipped with a transmitter, which can realize remote indication, detection and control of liquid level. According to the different installation position of the vessel, two forms of side mounting and top mounting are provided. According to the different working medium, stainless steel and ABS engineering plastics are provided; ABS is especially suitable for acid, alkali and other corrosive media.

After the installation of the matching instruments of the magnetic flap level gauge, the following operation items should be paid attention to.

1. During commissioning, the upper pilot valve should be opened first, and then the lower valve should be opened slowly, so that the medium can enter the main pipe smoothly (the medium should avoid the rapid impact of the medium on the float, causing dramatic fluctuation of the float, affecting the display accuracy), and observe whether the magnetic red and white balls turn over normally. Then, close the valve of the lower lead pipe and open the blowdown valve to let the liquid level in the main pipe drop. Operate according to this method If it is normal after three times of operation, it can be put into operation (except for corrosive and other special liquids);

2. The main pipe should be cleaned irregularly and impurities should be removed according to the medium condition;

3. For the liquid level gauge with a certain length (ordinary type > 3M, anticorrosive type > 2m), it is necessary to increase the middle reinforcement flange or lug as fixed support to increase the strength and overcome its own weight;

4. The installation position of the magnetic flap level gauge should avoid or be far away from the inlet and outlet of the material medium, so as to avoid the rapid change of the local area of the material fluid and affect the accuracy of the liquid level measurement;

5. When equipped with remote transmission instrument, the following items should be done:

The remote instrument should be close to the main pipe of the level gauge and fixed with stainless steel hoop (iron is not allowed);

The zero position of the remote instrument should be on the same horizontal line as the zero position indication of the liquid level gauge;

The sensing surface of remote instrument should face and close to the main pipe;

The connection between remote supporting instrument and display instrument or industrial control computer is better, and it is laid separately through protective tube or shielded two core cable.

The technical essentials of the actual operation of the magnetic flap level gauge are described above. Please refer to the above requirements in the use process to avoid measurement error
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