Suunto HelO2 — technical specs of diving computers: dimensions, pressure, sensors, algorithms [47/64]
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Suunto HelO2 — technical specs of diving computers: dimensions, pressure, sensors, algorithms [47/64]

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10. TECHNICAL DATA
10.1. Technical specifications
Dimensions and weight:
• Diameter: 61.0 mm/2.4 in
• Thickness: 28 mm/1.1 in
• Weight: 68 g/2.4 oz
Transmitter:
• Max. diameter: 40 mm/1.57 in
• Length: 80 mm/3.15 in
• Weight: 118 g/4.16 oz
• Rated working pressure: 300 bar/4000 psi, maximum allowed pressure 360 bar/5,000
psi
• Display resolution: 1 bar/1 psi
Depth gauge:
• Temperature compensated pressure sensor
• Fresh water calibrated (calibrated in compliance with EN 13319)
• Maximum depth of operation: 120 m/393 ft (complying with EN 13319)
• Accuracy: ± 1% of full scale or better from 0 to 120 m/394 ft at 20°C/68°F (complying
with EN 13319)
• Depth display range: 0 to 150 m/492 ft
• Resolution: 0.1 m from 0 to 100 m, 1 m from 100 to 150 m/1 ft from 0 to 492 ft
Temperature display:
• Resolution: 1°C/1°F
• Display range: -20 to +50°C/-9 to +122°F
• Accuracy: ± 2°C/± 3.6°F within 20 minutes of temperature change
Calendar clock:
• Accuracy: ± 25 s/month (at 20°C/68°F)
• 12/24 h display
Displays only in MIXED GAS mode:
• Oxygen %: 8 - 99
• Helium %: 0 – 92
• Oxygen partial pressure display: 0.0 – 3.0 bar.
• Oxygen Limit Fraction: 0 - 200% with 1% resolution
Logbook/dive profile memory:
• Recording interval: 20 seconds adjustable (10,20,30,60s).
• Memory capacity: approximately 80 hours of diving with 20 second recording interval
• Depth resolution: 0.3 m/1 ft
Operating conditions:
• Operating altitude range: 0 to 3,000 m/10,000 ft above sea level
• Operating temperature: 0°C to 40°C/32°F to 104°F
• Storage temperature: -20°C to +50°C/ -4°F to +122°F
It is recommended that the instrument be stored in a dry place at room temperature.
NOTE
Do not leave the dive computer in direct sunlight!
Tissue calculation model:
• Suunto Technical RGBM algorithm (developed by Suunto and Bruce R. Wienke, BSc,
MSc, PhD)
• 9 tissue compartments
• Tissue compartment halftimes: 2.5, 5, 10, 20, 40, 80, 120, 240 and 480 minutes (on
gassing). The off gassing halftimes are slowed down
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Dive computer technical specs: dimensions, pressure ratings, depth sensor accuracy, temperature display, RGBM algorithm, and tissue model details for underwater diving.