Operating Nitrox Membrane Systems

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Operating Nitrox Membrane Systems
Presented by Nuvair
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Membrane systems produce nitrox efficiently

• Compressed air flows through the membrane
• Nitrogen rich gas is expelled
• Oxygen rich gas is produced

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Components of the membrane system
Nitrogen release
Permeate O2 Rich Gas
Membrane
Air Filter
Mixing Tube
Intake hose
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Components of the membrane system
Analyzer
Regulator
Heater
Filters
Heater Thermostat
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System Specifications

• Membrane temperature 110 degrees F or 43 degrees
  C
• Operating pressure 80-170 p.s.i., 6-12 bar
• Max input pressure 300 p.s.i. or 21 bar
• Air supply quality LP Grade D, HP Grade E
• Nitrox Range 24 - 40

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The membrane is incorporated in these systems
For dive operators who own HP compressors
For dive operators who want a complete nitrox
solution
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Rotary Screw System Operation

• System is for dive operators who already own HP
  compressor

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Rotary Screw System Components
Inline Permeate O2 Analyzer
On/Off Switch
Membrane
Control Panel
Nitrox out To HP
Power Switch
Drier on/off switch
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Rotary Screw System Components
Adjust O2
HP Intake
Operation Gauge
Nitrox out To HP
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Rotary System Rear Components
Waste air
Heater Thermostat Control
Pressure switch
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Easy operation

• Always read the manual first!
• Steps vary depending on installation
• Check oil level filters first
• Turn on drier

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Calibrate the fill O2 analyzer
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Follow the steps in the manual

• Turn on HP compressor
• Adjust fill whip allowing air to escape
• Calibrate permeate O2 analyzer
• Turn on LP compressor

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Follow all safety precautions

• Adjust input pressure to over 80 p.s.i. (5.5 bar)
• Verify thermostat operation
• Increase or decrease pressure to set final O2

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Final adjustments

• Fill O2 analyzer should read same as inline O2
  analyzer
• You are ready to pump nitrox!

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Always test the nitrox in the cylinder with an
independent analyzer!

• Have the customer analyze the gas and sign for it

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Components of the Voyager (nitrox in a box!)
Fill pressure gauge
Fill O2 Analyzer
Permeate O2 Analyzer
Dial-A-Pressure Control
HP Filter Cannister
LP Filters
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Additional Voyager components
Feed air control
LP Gauges
HP Controls
LP Oil Level
Temperature Gauges
Heater Thermostat
HP Oil Level
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Using the Voyager

• Always read the manual first!
• Check oil level filters
• Check LP feed valve is off
• Start HP compressor

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Using the Voyager

• Open one fill whip - adjust to hold 1500 p.s.i.
  (103 bar)
• Drain condensate
• Calibrate analyzers

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Operation is simple!

• Adjust regulator initially for low pressure
• Turn on LP feed air valve
• Increase regulator pressure to 80-160 p.s.i.
  (5.5-11 bar)

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Operation is simple!

• Wait for O2 to stabilize on permeate analyzer
• Adjust regulated input pressure
• Wait for correct nitrox on the fill O2 analyzer
• When O2 is correct, attach whip fill tank!

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Always test the nitrox in the cylinder with an
independent analyzer!

• Have the customer analyze the gas and sign for it

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Operation of membrane systems is easy!

• Membrane systems provide accurate nitrox
  mixtures.
• Membrane systems require the least amount of
  training.
• Membrane systems allow you to fill nitrox tanks
  at same rate as air tanks.

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Thank you for attending!