Fisher 546 Electro-Pneumatic Transducer 3-15 PSIG Ser. no. 11906714

Fisher 546 Electro-Pneumatic Transducer

The Fisher 546 Electro-Pneumatic Transducer is engineered to convert a direct-current (DC) input signal into a proportional pneumatic output signal, facilitating precise control in various industrial applications.

Key Features

• Input Signals: Compatible with 4-20 mA DC, 10-50 mA DC, and 1-9 VDC inputs, offering flexibility for different control systems.
• Output Signals: Provides output ranges of 3-15 psig, 6-30 psig, 3-27 psig, 0-18 psig, or 0-33 psig, accommodating diverse operational requirements.
• Accuracy: Delivers a reference accuracy of ±0.75% of the output span, ensuring reliable performance.
• Supply Pressure: Requires a supply pressure 5 psi higher than the upper range limit of the output signal, with a maximum of 50 psig.
• Field-Reversible Action: Easily switchable between direct and reverse action to suit specific application needs.
• Explosion-Proof Design: Features an explosion-proof case and cover, enhancing safety in hazardous environments.
• Convenient Adjustments: Equipped with screwdriver adjustments for span and zero, with clear directional indicators for ease of calibration.
• Integrated Pneumatic Relay: The external mounting of the pneumatic relay allows for removal without disturbing electrical or pressure connections, maintaining explosion safety.

Applications

The Fisher 546 Transducer is ideal for industries requiring precise pneumatic control based on electrical input signals, such as chemical processing, power generation, and oil and gas sectors.

Specifications

• Internal Resistance of Torque Motor:
  • 4-20 mA DC Input Signal: 176 ±10 ohms
  • 10-50 mA DC Input Signal: 90 ±10 ohms
  • 1-9 VDC Input Signal: 1300 ±50 ohms
• Maximum Steady-State Air Consumption:
  • At 20 psig Supply Pressure: 0.6 normal m³/hr (21 scfh)
  • At 35 psig Supply Pressure: 0.8 normal m³/hr (30 scfh)
• Maximum Output Air Capacity:
  • At 20 psig Supply Pressure: 12.9 normal m³/hr (480 scfh)
  • At 35 psig Supply Pressure: 18.5 normal m³/hr (690 scfh)
• Operating Temperature Range: -40 to 66°C (-40 to 150°F)
• Humidity Rating: 80% for temperatures up to 31°C (88°F), decreasing linearly to 50% RH at 40°C (104°F)
• Altitude Rating: Up to 2000 meters (6562 feet)
• Electrical Classification: CSA—Explosion-proof, Dust Ignition-proof, Div 2; FM—Explosion-proof, Dust Ignition-proof, Non-incendive

The Fisher 546 Electro-Pneumatic Transducer stands as a reliable solution for converting electrical signals into precise pneumatic outputs, ensuring optimal performance in demanding industrial environments.