Archer Valve Positioners, Limit Switches, Valve Monitors & Accessories

Smart Valve Positioner

ASD-5000 4-20mA Positioners

Archer’s ASD Smart Positioners excel in the harsh working conditions found in the toughest environments. Compared with other smart positioners, the is easier to calibrate and program, ASD is more resistant to dirty air and vibration due to its non contact feedback sensor, and has the lowest cost of ownership.

A wide rage of communication options is available including , Profibus and Foundation Fieldbus. It also carries ATEX, HART, and IECE certification for Intrinsically Safe and Flameproof. For severely corrosive environments a stainless steel enclosure is available.

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Features

Easy to use

  • Quick auto-calibration by pushing one button

  • Detecting RA (reverse acting) or DA (direct acting) automatically regardless of wrong air connections

  • By-pass (auto/manual screw)

  • Logical trend and histogram collection

  • Providing a mounting bracket to meet IEC 60534-6-1 for linear valves

  • Supporting a NAMUR mounting pattern VDI/VDE3845 (IEC60534-6-2) and providing a multi-size mounting bracket for rotary valves

Improved display performance

  • Wide and multi-lingual full text graphical TFT LCD with high-resolution and clear graphic images

  • Provides 3 steps to re-size information on LCD

  • Shows a control history trend, a logical trend and histogram collection

HART communication

  • HART (Ver. 7)
  • FDI certified by FieldComm Group
  • DTM certified by FDT Group

Non-contact position sensor

  • Magnetic position sensor (MPS, non-contact)

  • Resistant to vibration

  • Excellent temperature characteristics

Improved durability

  • Vibration and impact tolerant

  • Resistant to dirty air and humidity

Diagnostics

  • Self-diagnostics

  • Advanced diagnostics with 4 × pressure sensor

  • Valve signature

  • Valve step response

  • Partial stroke test (PST)

Options

  • Output position transmitter (4 – 20 mA)

  • 2 × 24VDC software limit switch or 2 × SPDT mechanical limit switch

  • Position indication beacon (dome)

  • Stainless steel body (316SS)

  • Intrinsically safe Ex ia IIC Gb & Ex ia IIIC Db

  • HART communication (Ver. 7)

  • Fail-freeze function (stay at last position)

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