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EP3121 Electro-Pneumatic Positioner
常陽儀表供應EP3000系列電氣閥門定位器 有:EP-3111;EP-3121;EP-3122;EP-3112;EP-3211 EP-3221;EP-3222;EP-3212;EP-3221;EP-3311;EP-3321;EP-3322;EP-3312;EP3000系列電氣閥門定位器1、兼容互換性好，適用范圍廣。可以選擇標準特性以外的輸出特性。2、氣動功率大，動作速度快，力平衡采用多回路不易振蕩，動作性能穩定。3、調校簡單，安裝方便。不打開外殼既可以實現零點調整，行程范圍調節方便，可調范圍大。
1、概要
EP 3000系列電氣閥門定位器與氣動執行機構配套使用，輸入4~20mA DC的信號轉換輸出空氣壓力，控制執行機構的動作。同時根據執行機構的行程進行反饋，從而使執行機構的行程能按控制信號進行定位。
EP3000系列電乞閥門定位器能用于單動作型和雙動作型執行機構。
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、標準規格 2、STANDARD SPECIFICATIONS
2-1．編碼 2-1.CODE NO.
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3 |
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系 列
Series |
3 |
0 |
0 |
0 |
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防爆（防護）結構
Ex.enclosure |
1
2
3 |
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耐壓防爆型（隔爆型）d ExdlllBT6 Explosion proof type |
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本質**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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反饋（動作）方式
Feedback style |
1
2 |
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直行程執行機構用：標準型Linear:Feedback for standard lever |
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角行程（直連式回轉軸）執行機構用:標準型Rotary:Feedback for lever |
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作用型式Action type |
1
2 |
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單動作型執行機構用（單作用）For single acting type |
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雙動作型執行機構用（雙作用）For double acting type |
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輔件Accessories |
21 |
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帶關聯匹配 氣壓控制器Matched decompressor valve |
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例：Example:
EP 3111： 表示 隔爆型、直行程、單作用、電氣閥門定位器。
EP 3211： 表示 本安型、直行程、單作用、電氣閥門定位器。
EP 3122： 表示 隔爆型、角行程、雙作用、電氣閥門定位器。
EP 3222： 表示 本安型、角行程、雙作用、電氣閥門定位器。
EP 3112： 表示 隔爆型、直行程、雙作用、電氣閥門定位器。
EP 3212： 表示 本安型、直行程、雙作用、電氣閥門定位器。
EP 3311： 表示 增安型、直行程、單作用、電氣閥門定位器。
EP 3111-21：表示 隔爆型、直行程、單作用、電氣閥門定位器帶關聯匹配組合 氣壓控制器。
注：耐壓防爆型（隔爆型）的使用環境溫度范圍為-20~+80℃。
本質**型（本安型）的使用環境溫度范圍為-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
