带远传磁翻板液位计-淮安万丰测控技术有限公司

带远传磁翻板液位计
带远传磁翻板液位计工作原理

以侧装式磁性翻板液位计为例，由液体计腔体、柱状浮子、磁性翻板以及用户选用的变送器、报警开关组成。液位计腔体可以视为压力容器的一部分，与压力容器通过上下侧法兰相连接，这样液位计腔体内的液位变化与压力容器内实际液位的变化是相一致的。液位信号通过液位计腔体内的柱状浮子中磁铁产生的磁场传递出去。变送器或报警开关是通过浮子磁铁产生的磁场，采样实际液位的变化，转换成标准4~20mA电流输出信号或继电器输出信号。变送器主要由电阻、干簧管、变送模块组成。当液位带动浮子上下变化，浮子磁铁产生的磁场就会引起均匀排列中相应位置干簧管的吸合，从而决定串联电阻的回路阻值的大小，并通过变送模块的转换，输出4~20mA电流信号。报警开关主要由干簧管、磁铁组成。当液位带动浮子上下变化，浮子磁铁产生的磁场就会引起相应位置干簧管的吸合或释放，从而输出继电器信号。报警开关的磁铁输出的继电器信号具有保持功能。磁性翻板是显示液位的，其中的红白翻珠均匀排列于铝制的卡槽中。当液位上升时，红白翻珠内的磁铁受到浮子内的磁铁的影响，带动翻珠由下而上逐一由白色翻红色；同样当液位下降时，翻珠由上而下逐一由红色翻回白色，从而无需任何电源就可显示出压力容器内液位的变化。

带远传磁翻板液位计仪表特点

1. 结构简单，可直观显示液位高低。

2. 可靠耐用，无需专门维护。

3. 显示单元和报警开关的工作无需电源。

4. 不受被测液体温度高、易流动、易燃烧、有毒

性等因素的影响。

5. 可用于高温、高压的环境。

6. 耐腐蚀性强，适用于大多数腐蚀性液体。

7. 适用于大多数低密度液体。
带远传磁翻板液位计技术参数

测量范围：300～10000mm

准确度：±10mm

工作压力：标准型≤1.6MPa

高压型≤16.0MPa（根据温度变化确定）

UPVC≤0.6MPa

介质密度：≥0.45g/cm3

介质温度：标准型：-20℃～150℃

高温型：≤350℃（根据压力变化确定）

PP材质与不锈钢衬氟材质请咨询与我司联系

带远传磁翻板液位计安装说明：

1. 开箱检查产品的型号是否与选购的型号一致，法兰尺寸及中心距是否与现场尺寸一致。

2. 浮子一般放置在液位计腔体一侧。

3. 安装前必须清洁管道，确保管道内无杂物堵塞。

4. 安装前先用浮子沿翻板自上而下引导一次，确保此时磁性翻板上的翻珠全部翻为白色。

5. 液位计必须垂直安装，倾斜度应小于5°。

6. 检查安装完毕后，打开液位计底部法兰，将浮子放入液位计腔体中。注意浮子上标有向上箭头（或以有磁钢的一端为上部）。

7. 液位计在投运之前，先缓慢打开进液阀，使液体缓慢进入液位计腔体内，以免浮子在液位计腔体内随液位急速上冲，造成翻珠随意翻转、显示混乱。

Working Principle

serial magnetic liquid level controller is consisted of chamber, magnetic float, magnetic flag,and the transducer, alarm switch that the user chose.The chamber can serve as a part of vessel; it can be connected to the vessel by the upper flange and the down flange. By this way, the liquid level within the chamber is the same as that in the vessel. The signal of level can be showed by the change of flag's status caused by the magnetic float within the chamber.

The transducer or alarm switch can function through the magnetic field caused by the magnetic float when the liquid level changes, they can produce a 4-20mA or relay output signal.

A transducer is consisted of resistance, reed switch and transducer module. The magnetic float’s position changes with the liquid level, which will make the reed switch change its status accordingly, and this change decides the resistance of the current circuit. When the transducer module gets the change of resistance, it will turn it into a 4-20mA current output signal.

The alarm switch is consisted of reed switch and magnet. The magnetic float’s position changes with the liquid level, which will make the reed switch change its status accordingly, and this change will

generate a relay signal. The relay signal generated by alarm switch can be hold.

The magnetic flag show the actual Iiquid level.When the float goes up with liquid level, the flag. will change from white to red; when the liquid level goes down, the flag will change to white. With no need of power supply, the magnetic liquid controller can show the level change of liquid.

Advantages

1. Simple structure, the user can see the liquid leveldirectly.

2. Reliable design, free of maintenance.

3. Work with no need of power supply.

4. No effect from the high temperature, flowing,flammable, and poisonous of liquid.

5. Can be used for the appliction of high temperature and high pressure.

6. Anticorrosive, can be used to measure most caustic liquid.

7. Suitable for measuring level of liquid with low specific gravity.
　
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