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  • 產品名稱:Electro-Pneumatic Positioner

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Electro-Pneumatic Positioner,Electro-Pneumatic Positioner
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EP3000 Electro-Pneumatic Positioner

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系列電氣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.

 

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.

 

2-2.技術參數 2-2.TECHNICAL DATA

系  列 Series

EP 3000

輸入信號 Input signal

4~20mA DC                  The split range is possible by span

可進行分程控制 adjustment and zero adjustment

調整范圍:4~12、12~20mA DC  Adjustment range:4~12、12~20mA DC

輸入阻抗Input impedance

250Ω±5%at25

輸出特性Output Characteristic

線性(標準型)                Linear(standard)

放大器 Relay

單動作型執行機構和雙動作型執行機構兼用,Non-bleeding type.

單動作正作用型放大器易變換成反作用型放 Single acting and double acting types

大器(輸入信號增加,輸出氣壓相應減?。?nbsp;are available.

氣源壓力 Air supply

0.14~0.7MPa(140~700KPa)

輸出壓力 Output pressure

0~0.7 MPa(0~700KPa)

耗氣量 Air consumption

輸出氣壓50%時的耗氣量。 At output air pressure 50%

單動作型 Single acting type:5NI/min at 140 kpa air supply

雙動作型 Double acting type:15NI/min at 400kpa air supply

大處理容量Max.capacity

輸出側氣源放空時 Capacity when output is atmospheric venting.

單動作型 Single acting type:175NI/min at 140kpa air supply

雙動作型 Double acting type:400NI/min at 400kpa air supply

   Performance

單動作型執行機構 For single acting actuator

直 線 性 Linearity??????????????????????????????±1.0%of Full stroke

滯   后 Hysteresis????????????????????????????0.5%of Full stroke

靈 敏 度 Response level??????????????????????0.1% of Full stroke

重 復 精 度 Repeatability?????????????????????????0.2% of Full stroke

氣源壓力變動誤差 Supply pressure effect???????????0.1%10Kpa            

雙動作型執行機構 For double acting actuator             

直 線 性 Linearity???????????????????????????????±1.5% of Full stroke

滯   后          Hysteresis????????????????????????????0.8% of Full stroke

靈 敏 度 Response level??????????????????????0.2% of Full stroke

重 復 精 度 Repeatability?????????????????????????0.3% of Full stroke

氣源壓力變動誤差 Supply pressure effect???????????0.4%10Kpa

上述各數值是指在不連接閥門的情況下執行機構的性能。

The above data represent the performance of the positioner on an actuator without a valve.

氣源

3、特點

適用于小容量及大容量的執行機構由于采用了載荷控制彈簧,選擇相應的彈簧后就能獲得適合于該執行的定位器。

耗氣量??;放大器的耗氣量小、容量大。

可以選擇輸出特性,由于反饋機械中有凸輪裝置,因此可以選擇標準特性以外的輸出特性。

各種反饋方式對應的型號:

只要更換凸輪裝置,就可以用于以下對應的執行機構。

*直行程執行機構:標準型?????????????????? EP 3 1

*角行程執行機構:標準型????????????????? EP 3 2

易變換成反作用放大器,單作用執行機構在需要反作用控制時,正作用型放大器很容易變換成反作用型放大器。

耐壓防爆型可在現場進行調整。


3.FEATURES

USABLE WITH SMALL AND LARGE CAPACITY ACTUATORS

By adjusting the built-in capacity control spring,the positioner can be made optimum to the given actuator.

LOW AIR CONSUMPTION

  The relay is low in air consumption and large in capacity.

OUTPUT CHARACTERISTICS SELECTABLE

  Having a cam within the feedback construction,choices other than the standard linear characteristic available.

COMPATIBLE 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

REVERSE 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.

EXPLOSION 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.

INTRINSICALLY 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

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