Yokogawa 43AP Pneumatic Indicating Controller Y/43AP-YA4N/GAS-FM//PR1/Z

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Yokogawa 43AP Pneumatic Indicating Controller Y/43AP-YA4N/GAS-FM//PR1/Z

Yokogawa 43AP Pneumatic Indicating Controller Y/43AP-YA4N/GAS-FM//PR1/Z Available

Product Description:

Yokogawa 43AP Pneumatic Indicating Controller

Brand: Yokogawa Electric Works, Ltd.

Model/Style: 43AP Series (Style B)

Part Number (P/N): Y/43AP-YA4N/GAS-FM//PR1/Z

Serial Number: 247EG022

Year of Manufacture: 1982

Country of Origin: Japan (Yokogawa Electric Works, Ltd. Tokyo, Japan)

Condition: Used/Authentic Industrial Surplus (Physical unit complete with intact internal/mechanical pneumatic components, fully legible nameplate, external air filter regulator, and pressure gauge).

Fits For & Applications:

  • Designed to measure, indicate, and automatically control process variables such as pressure, differential pressure, temperature, or liquid level in pneumatic control loops.
  • Ideal for oil & gas refineries, chemical/petrochemical plants, water treatment facilities, and power plants requiring non-electric control in hazardous environments.

Key Components & Features:

  • Clear Visual Display: Large 156 mm (6 in) nominal dial scale with high-visibility fluorescent red pointers.
  • Integrated Air Set: External air filter regulator and supply pressure gauge assembly included.
  • Rugged Construction: Heavy-duty aluminum alloy enclosure with polyurethane paint finish, rated IP53 / NEMA 3 for harsh environments.
  • Pneumatic Mechanism: Features receiver bellows assembly (PR1) for accurate proportional plus integral control.

Key Technical Specifications:

  • Control Mode: Proportional plus Integral (-A4)
  • Supply Pressure: 1.4 kg/cm² (≈ 20 psi / 140 kPa)
  • Measurement / Scale Range: −30 to +40 mmH₂O
  • Output Signal Range: 0.2 to 1.0 kg/cm² (≈ 3 to 15 psi / 20 to 100 kPa)
  • Indicator Accuracy: ±0.5% of span
  • Air Consumption: 0.5 m³/h (at standard conditions 0°C, 101.3 kPa)
  • Operating Temperature: −30°C to +80°C
  • Connections: JIS Rc1/4 female / 1/4 NPSF process & air connections
  • Weight: ≈ 7.6 kg (17 lbs)

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