译文：
一、各类电磁阀 电磁阀有电磁配压，电磁空气阀，不锈钢电磁阀等，分别为二位二通，二位三通，二位四通的换向阀，可用于控制油，水，气管系的换通断。 此类阀是采用带有辅助接点，可自动断电的直流或交流电磁铁来控制阀位，除DKF型不锈钢电磁空气阀为单线圈长时通电外，其余均采用双线圈短时通电制。对于长时通电的电磁铁线圈，由两组线圈组成，一组供动作用，一组供维持用，这样在不降低吸力的情况下，可降低线圈的温升，短时通电制的线圈，按长时通电制设计，安全度高，寿命长。 电磁阀采用直流电源供电时，必须按说明书图中“＋”“一”极按线，否则线圈通电产生的磁场，将对动作接点的磁钢有所干扰，影响接点的正确动作。 二、磁珠液位计 磁珠液位计由液位计和供发讯用的磁记忆开关两部分构成，液位计中有磁浮子在连通管中上、下浮动，浮子内磁钢的位置正好与液面相对应，它与紧贴连通管的磁珠产生磁耦合，磁珠始终跟随磁浮子，因此，磁珠所处的位置也就反映了容器内的实际液位。 磁记忆开关固定在连通管的管壁上，磁浮子上升，达到整定位置时，上开关动作，即使磁浮子继续上升，远离开关，开关仍处于记忆状态；磁浮子下降时，首先上开关释放，随着降至下限整定位置时，下开关动作，并使下开关记忆。 磁记忆开关具有记忆功能，接点的运输事与动断状态应在接线前加以分辨，因为在运输过程或其他原因，可能赞成磁记忆开关接点错乱，帮在接线前，要用磁钢在连通管外上、下接动浮子，模拟全范围动作一次，使磁记忆开关接点状态恢复正常。然后再接线，投入正常使用。 磁浮子采用均压结构，因此磁珠液位计可使用于高压容器的液位测量及控制。但在使用中应注意： 磁浮子使用中通气管应朝上，不能倒塌置使用，否则先去了均压效能。 液位计（包括连通管及磁浮子）在出厂前均已做完水压试验，因此在现场不要重复进行水压试验，以免在急剧升压或急剧放压过程中损坏磁浮子。 磁珠液位计如用截止阀与压力窗口连接，压力容器升压前，应事先打开截止阀，防止压力容器升压后，再突然开阀，造致连通管内急剧升压损坏磁浮子。 在磁珠液位计的连通直接加上变送器，可发出DC4~20mA的标准信号，其分辨率为7mm，可供用户微机系统使用。

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原文：
I. various electromagnetic valve Electromagnetic valve have electromagnetic equipped pressure, electromagnetic air valve, stainless electromagnetic valve respectively 2 Second pass, two three links, two Stone's valve, for control oil, water, trachea Department exchange off . Such valve is adopt with auxiliary contacts, automatically power DC or AC solenoid to control valve bit, except DKF type stainless electromagnetic air valve single coil long telegram, other adopt double coil Short electricity system. For long electrifying electromagnet coil, by two coil composed group for action use, a group for maintain used so without lowering suction circumstances reduces coil temperature rise, short electricity system coil press long telegram system design, safety high long life. Electromagnetic valve DC supply must press manual diagram "+" "one" pole press line Otherwise coils generated magnetic, will action junction magnet somewhat interference affect contacts correct action. II bead level gauge Bead Level Gauge by the Level Gauge and for sender used magnetic memory Kaiguan two parts, Level Meter there maglev promoter in Connected tube, down floating, float inside alnico position precisely and surface corresponds it close Connecting Pipe beads produce magnetic coupling, bead always follow maglev sub, therefore bead location also reflects container actual level. Magnetic memory switch fixed in Connecting Pipe wall on maglev sub rise achieve tuning position, on switch action, even Maglev sub continue rise away switch, switch remains memory state; Maglev sub decline, first last switch release With fell minimum tuning position, Lower switch action make next switch memory. Magnetic memory switch has memory function contacts transport things with Activity broken state should wiring ago be distinguish because transport process or other reasons may favor magnetic memory switch contacts disorder, help in wiring ago, use alnico in connectivity tube outer upper and lower access dynamic float, simulation Full Scope action once enable magnetic memory switch contact state normal. Then wiring, input normal use. Maglev sub of Pressure structure, therefore bead level gauge enable for pressure vessels Level Measurement and Control. But in use should NOTE: Maglev sub use Zhongtong trachea should upward not collapse home use Otherwise first went Pressure effectiveness. Level Gauge (including connectivity tubes and maglev sub) in factory have done hydraulic test, therefore scene not repeated hydraulic test avoid sharply boost or sharp caving pressure process damaged maglev sub. Bead Level Gauge if use stop valve and pressure window connection, pressure vessel boost, should prior open valve prevent pressure vessel boost, then suddenly open valve, create induced connectivity tube sharp boost damaged maglev sub. In bead Level Gauge connectivity direct plus transmitter may issue DC4 ~ 20mA standard signal, its resolution 7mm, available user microcomputer systems.