A portable helium oxygen analyzer designed to ensure the correct mix of helium, oxygen and nitrogen for technical diving. It analyzes gas mixes, automatically correcting for environmental conditions and eliminating the risk of errors from manual calculations.

  • Displays O2, He and balance gas (0-100%)
  • Automatically adjusts for environmental conditions to avoid risk of nitrogen narcosis during dives down to 46 meters
  • Includes temperature, barometric pressure and RH sensors
  • Long life battery with 16 hours of use, with two-hour charge time
  • 15-minute auto-off feature to save battery
  • Watertight, IP65 enclosure

Trimix 4001
Measurement range 0-100% Helium, 0-100% Oxygen
Accuracy ±2% of range at constant conditions
Response time ±2% of range at constant conditions
Sensor model He: AII-41-100, O2: AII-11-75D
Sensor life He: 10 years, O2: 60 months in air
Calibration interval Prior to use with ambient air or a known concentration of oxygen
Inlet pressure < 5 psig with 1-2 SCFH or open tank valve slowly until hissing sound Ambient pressure (extract sample with optional integral pump)
Display Backlight LCD 6.4 x 6.4cm (2.5 x 2.5”)
Dimensions 221 x 190.5 x 96.5mm (8.7 x 7.5 x 3.8")
Ingress protectionWatertight case (when closed) IP65
Compensation Temperature, barometric pressure, relative humidity
Storage temperature 0°C to 50°C (32°F to 112°F) 50°C intermittently
Operating temperature Operating temperature
Power Rechargeable battery, 9 V DC from 110/220 V AC (can charge battery in 2 hours). Optional 12 V DC car charger.
TypeTitle
DatasheetTrimix 4001


Trimix 4001

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Analytical Industries Inc.
2855 Metropolitan Place,
Pomona, CA, 91767
USA
909-392-6900