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EP-3211Electro-Pneumatic Positioner
EP 3000 Electro-Pneumatic Positioner
1、概要
EP 3000系列电气阀门定位器与气动执行机构配套使用，输入4~20mA DC的信号转换输出空气压力，控制执行机构的动作。同时根据执行机构的行程进行反馈，从而使执行机构的行程能按控制信号进行定位。
EP3000系列电乞阀门定位器能用于单动作型和双动作型执行机构。
Electro-Pneumatic Positioner
1、GENERAL
The EP3000 Series Positioner,mounted on a pneumatic actuator,moves the actuator by receivingDC4~20mA signals from a controller.Also,the function of detecting and feeding back the actuator displacement provides accurate position in response to DC4~20mA signals.
The EP3000 can be used with both single and double action on actuators.
2、标准规格 2、STANDARD SPECIFICATIONS
2-1．编码 2-1.CODE NO.
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系 列
Series |
3 |
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防爆（防护）结构
Ex.enclosure |
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耐压防爆型（隔爆型）d ExdlllBT6 Explosion proof type |
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本质**型（本安型）I ExiallCT6 Intrinsically safe explosion proof type |
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室外防水型（增安型）e ExellT6、lP55 Weather proof type |
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反馈（动作）方式
Feedback style |
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2 |
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直行程执行机构用：标准型Linear:Feedback for standard lever |
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角行程（直连式回转轴）执行机构用:标准型Rotary:Feedback for lever |
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作用型式Action type |
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2 |
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单动作型执行机构用（单作用）For single acting type |
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双动作型执行机构用（双作用）For double acting type |
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辅件Accessories |
21 |
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带关联匹配 气压控制器Matched decompressor valve |
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例：Example:
EP 3111： 表示 隔爆型、直行程、单作用、电气阀门定位器。
EP 3211： 表示 本安型、直行程、单作用、电气阀门定位器。
EP 3122： 表示 隔爆型、角行程、双作用、电气阀门定位器。
EP 3222： 表示 本安型、角行程、双作用、电气阀门定位器。
EP 3112： 表示 隔爆型、直行程、双作用、电气阀门定位器。
EP 3212： 表示 本安型、直行程、双作用、电气阀门定位器。
EP 3311： 表示 增安型、直行程、单作用、电气阀门定位器。
EP 3111-21：表示 隔爆型、直行程、单作用、电气阀门定位器带关联匹配组合 气压控制器。
注：耐压防爆型（隔爆型）的使用环境温度范围为-20~+80℃。
本质**型（本安型）的使用环境温度范围为-40~+60℃。
In the case of explosion proof type,temperature range is -20~+80℃.
In the case of intrinsically safe explosion proof type,temperature range is -40~+60℃.
3.FEATURES
①USABLE WITH SMALL AND LARGE CAPACITY ACTUATORS
By adjusting the built-in capacity control spring,the positioner can be made optimum to the given actuator.
②LOW AIR CONSUMPTION
The relay is low in air consumption and large in capacity.
③OUTPUT CHARACTERISTICS SELECTABLE
Having a cam within the feedback construction,choices other than the standard linear characteristic available.
④COMPATIBLE WITH VARIOUS FEEDBACK TYPES
Applicable to the following types by simply exchanging the cam block.
*For Linear type actuator:Feedback for Standard lever type∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙EP 3 1
*For Rotary type actuator:Feedback for Standard lever type∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙EP 3 2
⑤REVERSE ACTION RELAY EASILY AVAILABLE
The positive acting relay can be used as a reverse action relay when combined with a single acting actuator that requires a reverse action control.
⑥EXPLOSION PROOF STRUCTURE MARKING ON-SITE ADJUSTMENT POSSIBLE
Explosion proof construction,with the terminal and coil blocks enclosed together in one package,makes it possible to remove the positioner cover for inside inspection or span adjustment even in an explosive ambient.
⑦INTRINSICALLY SAFE CONSTRUCTION FOR A WIDE RANGE OF APPLICATIONS
The intrinsically safe construction covers terminals and clil as one package.This,combined with the adoption of the specified zener barrier,makes the unit applicable in all hazardous gas location(including Class 0 zone)ranging from low(-40℃)to high(+60℃)temperature environment.V
