上海电动调节阀厂家推荐一款防爆型带手动电动调节阀，以4-20mA电流信号或0-10V DC 电压信号为控制信号，可使阀门运动到所需位置，实现其自动化控制。

性能特点Performance Features
2.1壳体Shell
壳体为硬质铝合金，经阳极氧化处理和聚酯粉末涂层，耐腐蚀性强，防护等级为IP67，NEMA4和6，并有IP68和防爆型供选择。
The shell is made of horniness aluminium alloy, pass through anodic oxidation treatment and polyester powder coating, so it has strong corrosion resistance. Protection grade is IP67, NEMA 4 AND 6, and optional IP68 type and explosion-proof model.
2.2电机Motor
全封闭式鼠笼式电机，体积小，扭矩大，惯性力小，绝缘等级为F级，内置过热保护开关，可防止损坏电机。
Fully enclosed Squirrel-cage motor, small volume, large torque, and small inertia force, F-class insulation rating, built-in thermal protection switch, avoiding damage the electric machinery.
2.3手动结构Manual Structure
手轮的设计保证安全可靠、省力、体积小。不通电时，扳动离合器手柄可进行手动操作。通电时，离合器自动复位。（注：在不通电的状况下，电动执行器将保持永久手动状态。）
The design of handwheel ensure safe, reliable, labor-saving, small volume. When it don’t have electricity, it can be manually operated by clutch handle. When it has electricity, the clutch will reset automatically.
2.4指示器Indicator
指示器安装在中心轴上，可以观察阀门位置。镜面采用凸透镜设计，不积水，观察更方便。
Indicator installs in the center axis, so it can observes the valve position. It adopts convex mirror design, no cumulate water, more convenient to observe.
2.5干燥器Space Heater
用来控制温度，防止由于温度和天气变化导致执行器内部水分凝结，保持内部电气元件的干燥。
It is used for controlling temperature, avoiding internal moisture of electric actuator condensed because of the changing of temperature and weather, keep inner electric device dry.
2.6限位开关Limit Switch
机械，电子双重限位。机械限位螺钉可调，安全可靠；电子限位开关由凸轮机构来控制，简单的调整机构能精确并方便地设定位置。
Mechanical, electronic double limit. Mechanical limit screw is adjustable, safe and reliable; electron limit switch is controlled by the cam mechanism, easy adjustment institutions can set the position accurately and conveniently.
2.7扭矩开关Torque Switch
（005/008/010除外）可提供过载保护，在阀门卡涩，有异物时，自动断开电机电源，更有效的保护阀门和电动执行器不受损坏。（出厂前已设定好，请用户不要随意更改设置）
(Except -005/008/010) Providing over loading protect,avoiding damage the valve and electric actuator.(It’s already setted up before leave the factory, please don’t change the settings)
2.8自锁Self-locking
精密的双蜗轮蜗杆机构可高效传输大扭矩，效率高，噪音低（最大50分贝），寿命长有自锁功能，防止反转，传动部分稳定可靠，无需再加油。
Exact worm and worm gear can efficiently transfer large torque, high efficiency, low noise (max. 50 dB), long life, and it has self-locking function to prevent the inversion, transmission part is stable and reliable, no need to add oil.
2.9防脱螺栓Anti-off Bolt
拆除外壳时，螺栓附在壳体上，不会脱落。
When removed the shell, the bolt would be attached to the shell and didn’t fall off.
2.10安装Install
底部安装尺寸符合ISO5211国际标准，驱动轴套可拆下根据需要进行加工，适应性强。可以垂直安装，也可以水平安装。
The installation size of the bottom conforms to the international standard ISO5211 / DIN3337, The holes are double square so that it’s easy to fix the linear or 45°corner valves attached square bar, adaptable. It can be installed vertically, and also can be installed level.
2.11线路Circuitry
    控制线路符合单相或三相电源标准，线路布置紧凑合理，接线端子可有效满足各种附加功能的要求。（可根据客户要求另行加工。）
Control circuit conforms to the single-phase or three-phase power supply standard, reasonably compact line layout, wiring terminals can effectively satisfy a variety of additional functional requirements.