美國(guó)ASCO阿斯卡S290氣控閥系列參數(shù)如下：
壓力操作,不銹鋼閥體,管夾或?qū)附涌?DN10-65MM,介質(zhì)溫度:-10℃～+184℃，操作壓差：0-16公斤
• Water Treatment
• Pharmaceutical
• Petrochemical
• Food & Beverage
• Reliable and Robust Proportional Control
• Proportional flow control via 4-20mA signal (open loop)
• Closed loop control via external process signal
• Fail closed construction: valve closes upon loss of power
• IP66 enclosure allows valve to be used outdoors
• LED indicators for valve status and diagnostic functions
• Position feedback signal for optimal flow control
• Manual opening and closing function simplifies start up without controller system
• High flow rate due to angled seat design
• Handles viscous fluids up to 2700 SSU
• Energy Saving
• No air consumption when set point position is reached
• Low power consumption (3.6 W) when set point position is reached
• PositionerD is factory adjusted and tested saving installation time and cost
• Easy Calibration
• Initial regulation parameters can be modified on computer with downloadable APC software
and ASCO RS232 converter cable
Specifications
Series Open Close Fluids Steam Min. Max.
Pipe
Sizes
(in)
Operator
Size
(mm)
Max.
Fluid
Temp.
?F (C?)
Body
Material
Response
Time (sec.)
Operating Pressure
Differential (psi)
Pilot
Pressure (psi)
290 with PositionerD
2-Way, Normally Closed
(Suffix PDB67) ¨
90 1" - 2"
1/2" - 3/4"
1" - 2"
1.0
2.0 2.0
2.0 2.5
1.0
63
0 - 150 Bronze or
Stainless Steel 0 - 230 366 60 116
¨?Accuracy < 2%; Hysteresis < 2%; Repeatability < 1%; Linearity < 5%
美國(guó)ASCO JOUCOMATIC公司是世界500強(qiáng)之一的美國(guó)艾默生集團(tuán)成員，是一家主要生產(chǎn)和銷(xiāo)售流體控制閥以及氣動(dòng)控制元件的跨國(guó)公司，具有100多年的生產(chǎn)技術(shù)經(jīng)驗(yàn)，在擁有超過(guò)30家工廠，為客戶(hù)提供超過(guò)23,000的流體控制產(chǎn)品。ASCO旗下?lián)碛斜姸嗥放?等都是ASCO的成員，其中ASCO/RED HAT，SIRAI品牌包括通用型產(chǎn)品及部分適用于特殊工礦的產(chǎn)品，可控制普通介質(zhì)。GENERAL CONTROL為燃燒系列閥，介質(zhì)可為燃油等。SCIENTIFIC是微型閥適用于醫(yī)療器械及其他分析產(chǎn)品行業(yè)。JOUCOMATIC是專(zhuān)業(yè)的氣動(dòng)控制產(chǎn)品的品牌，而TRI-POINT為壓力溫度開(kāi)關(guān)產(chǎn)品。
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