Digital Epic D430/D431/D450/D451 Transmitter

Brand: Westlock

Discrete position control and precision non-contact position feedback with digital communication via HART protocol in a simple integrated package.

With options for linear or rotary control valves and remote PST/ESD initiation.
Features
  • Microprocessor based technology allows digital communication via HART protocol
  • Remote and local partial stroke test (PST) and emergency shut down (ESD) initiated remotely via HART signal for safety system applications
  • Optional external button to initiate partial stroke test
  • Valve position measurement via a non-contact magnetic pick-up eliminates mechanical drive arms or linkages increasing reliability in high cycle applications or where vibration is present
  • Highly visible position indicator
  • Available with low power Falcon solenoid valve
  • Solenoid coils integrated within enclosure
  • Choice of factory pre-wired 3 and 4-way Falcon solenoid valves
  • Solenoid valves with a choice of Cv ratings and coil voltage
  • Models D430 and D431 feature corrosionresistant resin enclosure
  • Models D450 and D451 feature heavy duty stainless steel enclosure

Specifications

Approvals & Certifications

  • NEC

Coil Voltage

  • 7.2 Vdc

Communication

  • HART

Conduit Connection

  • 1/2” NPT - Model D431/D450
  • 3/4” NPT - Model D431 / D450
  • M20 - Model D450
  • M25 - Model D450

Enclosure Finish

  • Engineered Polyamide Resin - Model D430 / D431
  • Stainless Steel with Electro-Polished Finish - Model D450 / D451

Enclosure, Body Material

  • Engineered Resin - Model D430 / D431
  • Falcon V Valve Body: 316 Stainless Steel
  • Falcon V Valve Body: Aluminum
  • Falcon V Valve Body: Brass
  • Stainless Steel: Model D450 / D451

Environmental Protection

  • IP66
  • NEMA 4X
  • Non-Incendive

Flow Rate

  • Falcon Solenoid Valve: 1.4 Cv
  • Falcon Solenoid Valve: 4.3 Cv

Humidity

  • 10 to 90 % Relative Humidity, Non-Condensing

Linearity

  • ± 1 % of Full Scale

Materials of Construction

  • Beacon Visual Indicator: Co-Polyester
  • Falcon Solenoid Valve, Hardware: Stainless Steel
  • Falcon Solenoid Valve: Aluminum
  • Falcon Solenoid Valve: Brass

Mounting

  • Remote Mounting

Mounting Position

  • Any Orientation

NPT Connection

  • 1/2” NPT Female - Model D431
  • 1/4” NPT Female - Model D430
  • 3/4” NPT Female - Model D431

Operating Temperature

  • Engineered Resin Enclosures: -23° to 85° C (-10° to 185° F)
  • Standard Falcon Valve Operating Temperature: -20° to 85° C (-4° to 185° F)
  • Standard Operating Temperature: -40° to 85° C (-40° to 185° F)

Output

  • 4-20 mA Proportional to Valve Position

Override

  • Locking
  • Momentary

Power Supply Effect

  • Voltage Effect: ≤ 0.2 % of Full Scale from 10-30 Vdc

Resolution

  • ≤ 0.05 % of Full Scale

Reverse Polarity Protection

  • Protected Against Reverse Polarity

Span & Zero Adjustments

  • Span: 60° to 120°
  • Zero: 30 % of Calibration Span

Temperature Effect

  • ≤ 0.01 % of Full Scale/°C

Terminal Voltage

  • 10-30 V

Turn-On Time

  • Startup Stabilization: 0.5 seconds

Update Time

  • Output: 25 milliseconds
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