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EP-3321Electro-Pneumatic Positioner
1、概要
EP 3000系列電氣閥門定位器與氣動執(zhí)行機構(gòu)配套使用，輸入4~20mA DC的信號轉(zhuǎn)換輸出空氣壓力，控制執(zhí)行機構(gòu)的動作。同時根據(jù)執(zhí)行機構(gòu)的行程進(jìn)行反饋，從而使執(zhí)行機構(gòu)的行程能按控制信號進(jìn)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(zhí)行機構(gòu)。
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(biāo)準(zhǔn)規(guī)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 |
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0 |
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防爆（防護(hù)）結(jié)構(gòu)
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(zhì)**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(zhí)行機構(gòu)用：標(biāo)準(zhǔn)型Linear:Feedback for standard lever |
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角行程（直連式回轉(zhuǎn)軸）執(zhí)行機構(gòu)用:標(biāo)準(zhǔn)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(zhí)行機構(gòu)用（單作用）For single acting type |
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雙動作型執(zhí)行機構(gòu)用（雙作用）For double acting type |
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輔件Accessories |
21 |
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帶關(guān)聯(lián)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(guān)聯(lián)匹配組合 氣壓控制器。
注：耐壓防爆型（隔爆型）的使用環(huán)境溫度范圍為-20~+80℃。
本質(zhì)**型（本安型）的使用環(huán)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
