The Fairchild TD7800-401 is an electro-pneumatic transducer from the Model T7800 series, designed to convert electrical signals into precise pneumatic output for industrial control systems. Here's a detailed overview:

Specifications

• Input Signal: 4–20 mA
• Output Pressure: 3–15 psig
• Supply Pressure: Up to 150 psig
• Flow Capacity: 11 SCFM (18.7 m³/hr) at 150 psig supply
• Pressure Connections: 1/4" NPT
• Accuracy: ±0.25% of full scale
• Electrical Connection: DIN plug
• Body Material: Aluminum
• Diaphragm: Nitrile or Dacron
• Mounting: Panel or manifold mount