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PK200 Current-to-Pneumatic Converter

Brand: Yokogawa Electric Corporation

The Model PK200 Current-to-Pneumatic Converter is used mostly to actuate diaphragm operated valves, air cylinder operated valves, power cylinders or other terminal elements. 

Beside these, it is used as a simple signal converter in hybrid instrumentation comprising electronic and pneumatic instruments.
Features
  • High Accuracy and High Reliability
  • High Air Delivery, Low Air Consumption
  • Minimum Effects from Process Environments
  • Electronic Feedback Control

Specifications

Accuracy

  • ± 0.5 % of Span

Air Consumption

  • 0.24 Nm³/hour at psi: 20 (kPa: 140, bar: 1.4) Air Supply Pressure
  • Maximum

Air Flow Capacity

  • 6.6 Nm³/hour at psi: 20 (kPa: 140, bar: 1.4) Air Supply Pressure - Output Air Capacity
  • Maximum

Air Supply

  • psi: 20 (kPa: 140, bar: 1.4) - Standard Output
  • psi: 34 (kPa: 240, bar: 2.4) - Doubled Output
  • psig: 0 to 30 (kPa: 0 to 200, bar: 0 to 2) - Standard Output
  • psig: 0 to 60 (kPa: 0 to 400, bar: 0 to 4) - Doubled Output

Ambient Temperature Range

  • -40° to 60° C (-40° to 140° F)

Approvals & Certifications

  • CE
  • CSA - Intrinsically Safe
  • EMC - EN 61326-1 Class A, Table 2 for use in Industrial Locations
  • FM - Explosion-proof
  • TIIS - Flameproof & Intrinsically Safe

BSP Connection

  • 1/4” BSPT Female

Electrical Connectors

  • 1/2” NPT Female
  • 3/4” NPT Female
  • G 1/2” Female
  • G 3/4” Female

Enclosure Finish

  • Deep Sea Moss Green (Munsell 0.6 GY3.1/2.0) - Housing & Cover Material
  • Epoxy Resin-Baked Coating
  • Finished with Polyurethane Paint - Housing & Cover Material

Enclosure, Body Material

  • Stainless Steel JIS SUS304 - Pressure Gauge Case

Environmental Protection

  • IP54
  • IP66
  • NEMA 4X

Flow Capacity

  • 20 to 3,000 cm³ - Output Load Capacity

Humidity

  • 5 to 100 % Relative Humidity

Hysteresis

  • 0.2 % of Span

Input Signal

  • 10-50 mA
  • 4-20 mA

Length

  • 3.28 to 16.4 feet (1 to 5 m) - Output Piping Length

Linearity

  • ± 0.2 % of Span

Mounting

  • 2” (50.8 mm) Pipe
  • Surface

NPT Connection

  • 1/4” NPT Female

O-Ring Material

  • NBR JIS B2401-0977 1 Class A

Operating Temperature

  • -20° to 60° C (-4° to 140° F) - TIIS Flameproof Typical & TIIS Intrinsically Safe Typical
  • -40° to 60° C (-40° to 140° F) - FM Explosion-proof Typical & CSA Explosion-proof Typical
  • -40° to 80° C (-40° to 176° F) - General Use

Operating Voltages

  • 5.2-6 V at (4-20 mA Except/JS3)
  • 5.35-6.75 V at (10-50 mA)
  • 8.2-9 V at (4-20 mA for/JS3)

Output

  • psi: 3 to 15 (kPa: 20 to 100, bar: 0.2 to 1) for Output Signal - Standard Output
  • psi: 6 to 30 (kPa: 40 to 200, bar: 0.4 to 2) for Output Signal - Doubled Output

Position Effect

  • 10°, ± 0.2 % of Span
  • 90°, ± 0.4 % of Span

Pressure Range

  • psig: 0 to 30 (kPa: 0 to 200, bar: 0 to 2) - Standard Output
  • psig: 0 to 60 (kPa: 0 to 400, bar: 0 to 4) - Doubled Output

Pressure Type

  • Gauge

Repeatability

  • 0.1 % of Span

Reverse Polarity Protection

  • No Damage Occurs from Reversal of Normal Supply Current (4-20 mA) or from misapplication of up to 62 mA

Screw Material

  • Stainless Steel

Span Effect

  • Approximately 100 to 125 % of Span (up to 90 % of Supply Pressure)

Stability

  • 0.1 % of Full Scale/Hour - Short Term
  • 0.2 % of Full Scale/Month - Long Term

Storage Temperature

  • -40° to 80° C (-40° to 176° F)

Supply Pressure Effect

  • ± 0.1 % for psi: 1.45 (kPa: 10, bar: 0.1)

Vibration Effect

  • ± 0.5 % of Span (Zero Shift), (Conditions: 5 to 200 Hz at 2 G, Steady State)

Zero Offset

  • Approximately ± 10 % of Span - Zero Adjustment
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