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Industry Information
Side-mounted magnetic flap liquid level gauge with up and down switch output can realize long-distance alarm
2012-4-7 10:17:53

结构特点:1、基本型液位计根据浮力原理,浮子在测量管内随液位的升降而上下移动,浮子内的永久磁钢通过磁耦合作用,驱动红、白色翻柱翻转180'液位上升时,翻柱由白色转为红色,下降时,翻柱由红色转为白色,从而实现液位的指示。 Structural characteristics of side-mounted magnetic flap liquid level gauge : 1. The basic level gauge is based on the principle of buoyancy. The float moves up and down with the rise and fall of the liquid level in the measuring tube. The permanent magnetic steel in the float drives the red, The white flip column is turned 180 'when the liquid level rises, the flip column changes from white to red, and when it drops, the flip column changes from red to white, so as to achieve the level indication. 2. The upper and lower limit switch outputs use magnetic floats to move with the liquid level, so that the reed switch installed at the set position of the liquid level gauge riser can be operated to realize on-off control or alarm. 3. The electric remote transmission installs the transmitter on the side-mounted magnetic flap liquid level gauge. The transmitter consists of a sensor and a converter. It moves up and down through a magnetic float, and causes the measuring elements in the catheter to act in sequence through magnetic coupling to obtain a change in the resistance signal, which is summoned to a standard current signal output of 0 to 10 or 4 to 20 mA In order to connect with digital display instrument or computer to realize remote transmission display and control.

是以磁浮子为测量元件,磁钢驱动翻柱显示,无需能源。 The side-mounted magnetic flap liquid level gauge uses magnetic float as the measuring element, and the magnetic steel drives the flip column display without energy. Suitable for a variety of environments from low temperature to high temperature, vacuum to high pressure. It is an ideal level measurement product for petroleum, chemical and other industrial sectors. The side-mounted magnetic flap liquid level gauge is equipped with upper and lower limit switch outputs to realize remote alarm and limit control. The transmitter can be configured to realize long-distance indication, detection and control of the liquid level. Depending on the installation position on the container, there are two ways of side mounting and top mounting. According to the different media, two materials are available: stainless steel and ABS engineering plastics; ABS is especially suitable for corrosive media such as acids and alkalis.

产品前我们先将磁性翻柱液位计的工作原理作一简单的介绍。 Before you choose a side-mounted magnetic flip liquid level gauge, we will briefly introduce the working principle of the magnetic flip liquid level gauge. It has a cavity that holds the float. We call it the main body tube or shell. It forms a connector with the container through a flange or other interface. In this way, the liquid level in the cavity is the same as the liquid level in the container, so The floating ball in the cavity will rise and fall with the rise and fall of the liquid level in the container; at this time we cannot see the liquid level, so we installed a flip-column display outside the cavity, because we were floating when we made the floating ball. Magnetic steel is installed at the interface between the ball sinking liquid and the floating part. When the ball and the floating ball rise and fall with the liquid level, its magnetism is transmitted to the flip column display through the shell, pushing the magnetic flip column to turn 180 °; It is a cylinder composed of two red and white semi-cylindrical columns, so after turning 180 °, it will change the color (red below the liquid surface and white above) after facing the column display, and the junction of the two colors is the height of the liquid surface. The control type is added with a magnetic switch on the basis of the magnetic flap level meter. The magnetic switch signal can be used to control or alarm the liquid level while monitoring the liquid level. The remote type is based on the magnetic flap level meter. Based on the addition of 4 ~ 20mA transmission sensors, the liquid level changes are transmitted to the control room through the transmission sensors, cables and meters while monitoring the liquid level on-site to achieve remote monitoring and control. The installation method can be side or top, and the lower end of the body is sealed. A drain valve can be installed as required. The connection flange can be customized. The indicator is composed of magnetic color chips. When the magnetic floating ball in the body tube rises with the liquid level, the color film is flipped to display the liquid level height. It is also possible to install a magnetic switch or remote transmitter on the body tube to output a switch signal or an analog signal. A shut-off valve is installed between the side-mounted liquid level and the upper and lower liquid-dispensing pipes of the tested container in order to open or install the liquid-level gauge, on the other hand, it is convenient to maintain the liquid level. When the upper and lower cut-off valves are closed, the drain flange at the bottom of the level gauge can be opened or the drain screw can be removed, and the body of the level gauge can be cleaned by pouring water. When the M circumference of the magnetic flap liquid level gauge is greater than 3 meters, it is necessary to consider increasing the intermediate reinforcement flange (or ear climbing) for the [fixed support feet to increase strength. Sing。 The cross-sectional area of the core wire connecting the matching remote transmission level gauge cap changer and the secondary meter should be greater than 0. sing. When laying in parallel with the AC power source, a distance of at least 20 cm should be maintained. It is best to wear a separate iron pipe and use a shielded two-core cable. The shield can only be grounded at one end. The liquid level gauge is selected, and its contact capacity is designed with resistive load. If it is used with non-resistive or high permissive load, it is necessary to use an intermediate relay to switch. When the liquid medium contains suspended impurities and magnetophilic substances, it is not suitable to use a liquid meter (because these impurities will cause a blockage of the float assembly) "L1" in the outline structure diagram is the "sinking distance" of the side-mounted level gauge The user must understand this parameter. This parameter is related to the density of the medium. According to the principle of buoyancy, the length of the float assembly is related to the density of the medium. Therefore, when selecting and designing, different media must have different L1. The level gauge must be installed vertically to ensure that the float assembly can move up and down freely in the main body tube. It is best to install a shut-off valve between the container and the level gauge in order to clean and repair the level timer to cut off the material. The guide tube body is not allowed to be near the main tube of the level gauge. Otherwise, it will directly affect the normal operation of the level gauge. After the level gauge is installed, it needs to be calibrated with magnetic steel. Guide the column once to display red below the zero position and white above the zero position. When the level gauge is put into operation, the valve of the lower drainage tube should be opened first to allow the liquid medium to enter the main tube smoothly, to prevent the liquid medium from rising rapidly with the floating ball component, which will cause the black flap of the magnetic flap to malfunction or be turned over. After the liquid surface is stable, it can be re-calibrated with magnetic steel.) In order to prevent the floating ball component from being damaged during transportation, the floating ball component is taken out of the small level gauge main tube before leaving the factory. After the level gauge is installed, open the bottom drain flange, and then reinstall the floating ball assembly into the main tube. Note that the heavy end of the floating ball assembly is facing up and cannot be installed upside down. According to the wishes of the medium, the drain flange can be opened regularly to clean the sediment in the main pipe.