Notes on Oxygen Flow Meters and Connections

Overview

• Flow Meters: Devices delivering oxygen, connecting to a 50 psi hookup in hospital walls.
• Chemtron Hookup: Technical term for the back connection piece.
• Oxygen Adapter ("Christmas Tree"): Screws onto flow meter; oxygen devices attach here.

Connection Process

• Wall Connection:
  • Pressurized gas system with two holes: large (oxygen outlet) and small (latch).
  • Insert flow meter by aligning and pressing firmly.
• Operation:
  • Turn knob counterclockwise to open valve and deliver oxygen.
  • Standard flow rates: 1 to 15 L/min; "flush" mode delivers up to 40 L/min.

Measuring Oxygen Flow

• Ball Indicator: Measure flow rate by the center of the ball aligning with marked lines.
• Compensated Thorp Tubes: Technical term for flow meters with compensation for back pressure.
• Flow Interruption: If flow stops (e.g., from a pinched tube), the ball drops, indicating no flow.

Emergency Situations

• Without a Christmas Tree:
  • Emergency devices can connect directly to flow meter threads.
  • No need to find a Christmas tree in urgent situations.

Detaching Flow Meters

• Removal:
  • Push button on top to release.
  • Control the flow meter to prevent it from falling.

Safety Considerations

• Color Coding: Green indicates oxygen; ensure correct hookup.
• Medical Air and Vacuum: Don't connect oxygen flow meters to air or vacuum outlets.
• F2 Delivery: Ensure oxygen, not medical air, is delivered to patients.

Important Notes

• Ensure a secure connection to prevent dislodging or incorrect gas delivery.
• Always verify gas type and pressure settings before use.