Flow Meter with Four Tubes
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Function                                                                                                                                              Â
The Flow Head incorporates the following functions
Gas indexed pneumatic inlet ports
Flow control needle valves
N2O/O2 flow ratio hypoxic mixture prevention proportioning system
Flow tubes accurate to ±10 %of reading.Â
Color coded,market specific labels for flow tubes and flow tubes and flow control valves
Gas mixing chamber
Mixed gas outlet
General Operation:
The Flow Head integrates O2, N2O and Air channels (the N2O and Air channels are optional).
The O2 Air and N2O needle valves gas supply pressure is externally regulated to 200Kpa±10Kpa.
Performance:
(Note: Standard flow conditions defined at 20ºC,101.3Kpa, (760mmHG))
Flow Tubes
Flow tubes shall be calibrated for discharge into an ambient atmosphere of 101.3kpa at an operating temperature of 20ºC.
Each flow tube shall be calibrated to±10% of reading, or better.
Flow tubes must withstand 690kpa internal pressure without breaking.
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