AV1 and AV2
24Pages

Catalog excerpts

ABB MEASUREMENT & ANALY TICS | DATA SHEET AV1 and AV2 Characterizable pneumatic and electro-pneumatic positioners

AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I — Measurement made easy Characterizable analog pneumatic and electro-pneumatic positioners built on proven performance for demanding process conditions Proven pilot valve • increased reliability minimizes downtime and maintenance costs High capacity • fast response with high air delivery capacity Performance series • high flow gain pilot valve body achieves maximum flow capacity at small error signal Position transmitters • optional integrated 4 to 20 mA position transmitter Compact rugged design • NEMA 4X...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I — Characterizable pneumatic positioners AV characterizable pneumatic positioners are control devices that satisfy a wide range of applications. They provide fast, sensitive and accurate positioning of pneumatic single- or double-acting, linear or rotary motion actuators. A mechanical connection from the actuator to a position feedback cam in the positioner establishes actual position. Three characterized segments on one cam provide application flexibility by establishing various relationships between input...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I — Common specification Standard stroke range (cam selection)* AV_ _1_ _ _ _ 12.7 to 50.8 mm (0.5 to 2.0 in) linear, rotary input 45 ° AV_ _2_ _ _ _ 25.4 to 101.6 mm (1.0 to 4.0 in) linear, rotary input 90 ° Enclosure Aluminum and <0.5 % magnesium Pilot valve 303 stainless steel Enclosure classification Two adjustment levels via gain hinge spring change for standard and performance series (high gain) units are available. Supply pressure** 172 to 1,034 kPa (25 to 150 psig) Supply pressure effect 0.05 % per...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I Supply pressure (psig) Figure 1 Air consumption (at null) Flow (SCFM) 40 Supply pressure (psig) Figure 2 Capacity (exhaust to atmosphere)

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I Input range* • AV11 and AV15 –– 20.7 to 103.4 kPa (3.0 to 15.0 psig) • AV12 and AV16 –– 20.7 to 186.2 kPa (3.0 to 27.0 psig) Accuracy** 0.80 % of span maximum Resolution 0.09 % of span maximum Hysteresis** 0.45 % of span maximum Repeatability** 0.12 % of span maximum Deadband** 0.12 % of span maximum Linearity** 0.70 % of span maximum Input range* 4 to 20mA Input impedance 250 Ω at 20 mA Accuracy** 0.90 % of span maximum Resolution 0.30 % of span maximum Hysteresis** 0.70 % of span maximum Repeatability**...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I — AV1/2_ _ _1 position transmitter specification Total resistance 2000 Ω, ±20 % potentiometer Power rating • 1 W up to 70 °C (158 °F), • 0 W at or above 125 °C (257 °F) Wiper rate of change 9.9 Ω nominal per degree of cam rotation Temperature effect 0.05 % (500 ppm) per °C (0.03 % [278 ppm] per °F) maximum Maximum voltage 35 V DC or 30 V AC across the potentiometer ends Temperature limits Operating –40 to 82 °C (–40 to 180 °F) Storage –40 to 93

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I — Operation AV positioners operate by balancing opposing forces. Figure 3 is an operational diagram of the positioner. A balance beam, hinged at one end and connected to the pilot valve at the other, is acted upon by two forces: • upward force of the signal diaphragm assembly • downward force from the range spring AV1 pneumatic positioner AV1 positioners receive an external pneumatic signal and converts it to a pneumatic output. This output produces the motive force that positions the power actuator. The...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I Position transmitters Two types of position transmitters are available on AV1 and AV2 positioners. Performance series Performance series The potentiometric position transmitter uses a high durability plastic film potentiometer to indicate the position of the cam shaft. The resulting resistive value is a function of the shaft position. The resistive output can be used for additional control purposes. The 4 to 20 mA position transmitter uses a high durability plastic film potentiometer to indicate the cam...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I — Dimensions Dimensions in mm (in). All untoleranced dimensions are nominal. 76.2 (3.00) 2 x 0.312-18UNC-2B through mounting holes Approx. 45° motion for ½ travel cam 135.1 (5.32) See electrical connections – Figure 9 Ground screw and cable clamp (not provided on AV1_ _ _0_ _) See Note 1 2 x 7.9 (0.312) through mounting holes provided for 6.35 (0.25) fasteners, far side Pressure gages (see Notes 2 and 4) 190.5 (7.50) (see Note 3) Figure 6 External and mounting dimensions (shown with optional bypass...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I Output connection 01 ¼ – 18 NPT (see Note 2) Output connection 02 ¼ – 18 NPT (see Note 2) ⅛ – 27 NPT pipe plug. Remove to install optional pressure gages (see Notes 1 and 2) Figure 7 View with explosion proof I/P converter Air supply connection S ¼ – 18 NPT (see Note 2) Input signal connection I ¼ – 18 NPT (see Note 2) Figure 9 View with optional manifold Notes. 1 Pressure gages are available as an accessory only and must be installed by the customer. 2 Use liquid or paste pipe sealant on fittings. Do not...

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AV 1 AN D AV 2 CH AR ACTER I Z ABLE PNE U MATIC POSITIONE RS | DS/AV 1 2-E N RE V. I Type AV_ _ _ _ _0_ Figure 11 Drive arm dimensions Figure 12 Drive shaft options dimensions Type AV_ _ _ _ _4_ 0.375 in. square end (for Dezurik Power-Rac actuators)

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AV1 and AV2 24Pages

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AV1 and AV2
24Pages