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Fisher DVC2000
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AMK DT7-17-20-E00 A2525CD
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Emerson DXP-L21ZNEB
Emerson DXP-L21ZNEB

Fisher DVC2000

Product Name: FIELDVUE DVC2000 Digital Valve Controller
Product Introduction: The Fisher DVC2000 is a microprocessor-based, communicating electro-pneumatic valve positioner that converts a 4–20 mA​ analog input signal or HART digital signal into a pneumatic output to control valve actuators.
Category:
Description
Technical Specifications:
  • Input Signal: 4–20 mA DC​ (sourcing or sinking) with HART protocol overlay
  • Supply Voltage: 8.0–30 VDC​ (loop powered)
  • Pneumatic Supply Pressure: 1.4 bar (20 psig)​ or 2.4 bar (35 psig)​ depending on output option
  • Output Pressure: Proportional to input, max 1.0 bar (15 psig)​ below supply
  • Travel Range (Linear): 6.35 mm to 606 mm​ (0.25 to 23.375 inches)
  • Travel Range (Rotary): 45° to 180°​
  • Communication Protocol: HART​ (revision 5 or later)
  • Accuracy: ±2.5% of span​ (travel calibration reference)
  • Dead Band: < 0.1% of span​ typical
    Functional Characteristics: Linkage-less magnetic feedback system, local LCD user interface for configuration, integrated I/O option pack (two limit switches + 4–20 mA position transmitter), two-stage pneumatic relay design.
    Performance Parameters: Operating Temperature: -40°C to +80°C​ (standard); Humidity: 0–100% RH non-condensing; Air Consumption: 0.3 scfm (0.5 m³/h)​ at 1.4 bar supply (Code 2).
    Material Composition: Housing: A03600 low-copper aluminum alloy; Elastomers: Nitrile (NBR) or Fluorosilicone; Cover: Polycarbonate or aluminum with glass window.
    Structural Features: Compact integral mount design for Fisher 657/667 actuators; vent located at lowest point for water shedding; NEMA 4X / IP66 rated enclosure.
    Working Principle: The microcontroller measures valve position via Hall-effect sensors detecting a magnet on the actuator stem. It compares the position to the setpoint and modulates the pneumatic relays to minimize error, utilizing digital signal processing for adaptive tuning.
    Advantages: Eliminates mechanical linkage wear, enables predictive maintenance via ValveLink™​ diagnostics, intrinsically safe certifications, easy single-person calibration.
    Applicable Industries: Oil & Gas, Chemical Processing, Power Generation, Water & Wastewater, Pulp & Paper, Food & Beverage.
    Model Series: Fisher FIELDVUE DVC2000​ series (HC, AC, AD, PD instrument levels).
    Installation Requirements: Mount directly to actuator yoke or pipe stand; pneumatic ports G1/4​ or 1/4 NPT; electrical entry M20​ or 1/2 NPT; supply air must be clean, dry, and oil-free per ISO 8573-1.
    Usage Precautions: Ensure lockout/tagout before servicing; verify hazardous area certification (FM, CSA, ATEX, IECEx, NEPSI) matches installation zone; do not exceed 60°C​ maximum process temperature on housing.
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