PPO₂ cells · voting (bar)
Head-Up Display
Smither's code Colour-blind
HUD: normal
HUD error: cell 3 failed calibration
HUD error: no sensor comms
HUD error: turn on with low battery #2
Setpoint 0.70 L
Voted PPO₂ 0.70
Real loop PPO₂ 0.70
Depth 10.0 m
Loop FO₂ 0.35
Dil PPO₂ 0.42
Loop volume (2 × 3.0 L inner lungs) 5.5 L
Ideal loop volume – L
Solenoid · O₂ injection
Fires 0 /min
Last pulse 0.00 s
O₂ added (avg) 0.00 L/m
Metabolic 1.10 L/m
MAV flow 0 L/m
Dil flow 0 L/m
O₂ cylinder (2 L / 200 bar, in the door) 200 bar
Diluent stage (5.5 L / 207 bar, left) 207 bar
Radial scrubber M212 · 2.5 kg
Remaining 100%
Est. time 3:00
Stack timer 4:00
Insp. PCO₂ (sim) 0.0 mbar
Peak temp 12 °C
CO₂ absorbed 0.99 L/m
Heat 82 W
CO₂ + H₂O → H₂CO₃① CO₂ dissolves in the pellet's surface water film
H₂CO₃ + 2NaOH → Na₂CO₃ + 2H₂O + heat② fast neutralisation by NaOH (catalyst)
Na₂CO₃ + Ca(OH)₂ → CaCO₃ + 2NaOH③ slow step: lime locks CO₂ as chalk, regenerating NaOH
Radial flow, outside-in: exhaled gas runs down the gap between the canister wall and the outer tube, then crosses the bed inwards to the centre tube, so the violet front closes in as a shrinking ring. EN 14143 rating: 140 min at 4 °C, 40 m; up to 240 min at moderate work.