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Matters needing attention in installation and commissioning of magnetic level gauge

Time: 2012-09-29 08:58:48 source: Author:

Those who often contact with the liquid level gauge know that the magnetic flap level gauge is one of the liquid level meters which is easy to install, easy to use, and easy to maintain, which also makes his application proud and extensive. This paper introduces the main content of this paper Matters needing attention in installation and commissioning of magnetic level gauge

Installation procedure of magnetic flap level gauge

1、 Magnetic level gauge After leaving the factory, it has been fully debugged and assembled. After arriving at the site, the first step is to clean up the equipment to be installed on the site.

2. Prepare the necessary tools and bolts for installation, as well as the turnover indicator calibration bar supplied by the manufacturer.

3. Wipe the field flange, adjust the position of the equipment flange and align it with the flange of the magnetic flap level gauge. The main body of the magnetic flap level gauge must be kept vertical, and then install the bolts into the four holes of the flange with tools.

Notes on installation of magnetic level gauge
1. There is no magnetic material around the magnetic turnover level gauge body, and it is forbidden to fix it with iron wire, otherwise the normal operation of the magnetic flap level gauge will be affected;

2. If the user uses the heat tracing pipeline by himself, the non magnetic material, such as copper pipe, must be selected. The heat tracing temperature is determined according to the medium condition;

3. The installation of magnetic flap level gauge must be vertical, and ball valve should be installed between magnetic flap level gauge and vessel lead pipe to facilitate maintenance and cleaning;

4. There should be no solid impurities or magnetic substances in the medium to avoid jamming the float;

5. Before use, the small balls below the zero position should be set to red with the correction magnetic steel, and the other balls should be white;

6. Open the bottom flange and install the magnetic float (Note: the heavy end is magnetic and the end is upward, and can not be reversed.

seven During commissioning, the upper pilot valve shall be opened first, and then the lower valve shall be opened slowly to let the medium enter the main pipe smoothly (the medium shall not impact the float rapidly during operation, which will cause dramatic fluctuation of the float and affect the display accuracy). Then, 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 three times according to this method In addition, it can be put into normal operation;

8. According to the medium condition, the main pipe should be cleaned irregularly to remove impurities;

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

The liquid level of the liquid level meter should be kept away from the liquid level of the liquid level meter;

When equipped with UK (11) instruments, it is necessary to do the following:

a) The remote instrument should be close to the main pipe of the level gauge and fixed with stainless steel hoop (iron is not allowed);
b) The sensing surface of remote instrument should face and close to the main pipe;
c) The zero position of the remote instrument should be on the same horizontal line as the zero position indication of the liquid level gauge;
d) 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;
e) After the wiring hole of the junction box is laid, it is required to be well sealed to avoid rain, moisture and other invasion, which may cause the remote supporting instrument to fail to work normally. The junction box should be covered in time after maintenance or commissioning