Four-gas diffusion personal monitor covering combustible %LEL, oxygen vol%, carbon monoxide and hydrogen sulfide. With no pump it measures the air touching its own sensor face — the air the wearer is standing in — so the training covers pre-use bump testing, how carry position changes what it reads, TWA and STEL exposure accumulation across a shift, and the one job it must never be given: clearing a space for entry.
Carry-position model — a monitor in a pocket or toolbag reads low and late, and you can watch it catch up when moved to the breathing zone
Bump test with per-channel pass/fail against applied gas, including a dead sensor that silently fails
TWA and STEL accumulation across a shift, so an exposure that never trips an alarm still shows up
Direct contrast with the aspirated monitor: why a diffusion instrument cannot survey a space from outside
Who it’s for
Industries this applies to
MaritimeSafety Equipment
Personal Gas Monitoring at Sea
Personal exposure monitoring for engine room, pump room and hot work, and the limits of a diffusion instrument under IMO Resolution A.1050(27)
Oil & GasSafety Systems
Personal Gas Monitoring
Shift-long personal exposure monitoring and pre-use bump testing on upstream and downstream sites
ConstructionSafety
Site Personal Gas Monitoring
Personal monitoring for excavation, plant rooms and hot work, with TWA and STEL exposure review
A generic training model of this instrument class. Inspired by portable gas detectors of this type; not affiliated with, endorsed by, or a reproduction of any manufacturer's product, and no manufacturer's marks are used.
See Four-Gas Diffusion Personal Monitor Simulator in action
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