Sensor-by-sensor training modules covering detection technology, failure modes, correction factors, regulatory thresholds, and field operations. Each module includes a knowledge check.
Wheatstone bridge circuit, catalytic combustion, correction factors for propane and H₂, O₂ dependency, catalyst poisoning, and pegging-and-crash failure mode.
Galvanic fuel cell chemistry, 19.5% / 23.5% / 16% thresholds, Cl₂ cross-sensitivity overread, CO₂ underread, lead anode depletion, and O₂-deficient entry requirements.
IDLH 50 ppm, olfactory fatigue and paralysis above 100 ppm, SO₂ cross-sensitivity, agricultural pit rescue scenarios, and electrochemical cell oxidation chemistry.
3-electrode potentiostat design, OSHA PEL 50 ppm / NIOSH REL 35 ppm / IDLH 1,200 ppm, H₂ cross-sensitivity at EV fires, and COHgb half-life treatment table.
Cytochrome c oxidase inhibition, 40% anosmia prevalence, ACGIH TLV-C 0.9 ppm skin notation, polyurethane foam as primary fire source, and hydroxocobalamin antidote.
10.6 eV lamp ionization potential, isobutylene calibration CF=1.0, 15-compound IP reference table, silicone lamp fouling (irreversible), humidity quenching, and roll-over failure.
Beer-Lambert Law, C–H bond absorption at 3.4 µm, O₂-independent operation, hydrogen blind spot, dual-beam reference design, and comparison against catalytic bead sensors.
Anodic oxidation chemistry, H₂S mutual cross-sensitivity, asthmatic risk below PEL, delayed pulmonary edema, ACGIH TLV-C 0.25 ppm, IDLH 100 ppm, and heavier-than-air behavior.
Anodic oxidation to N₂, PID correction factor 10–14 (severe underread), LEL 15–28% dual flammable/toxic hazard, cryogenic/alkaline burns from anhydrous ammonia, IDLH 300 ppm.
Cathodic reduction chemistry, critical O₂ sensor false-high (life-safety), bleach + acid reaction, heavier than air (MW 71), ACGIH TLV-C 0.5 ppm, IDLH 10 ppm, ERG 11 km large-spill zone.
Cathodic reduction, delayed pulmonary edema 4–48 hrs, 2NO + O₂ → 2NO₂ during overhaul, silo gas agriculture fatality cause, post-blast brown cloud indicator, methemoglobin formation.
AlP + H₂O → PH₃ generation chemistry, shipping container fumigation scenarios, ACGIH TLV-TWA 0.02 ppm, IDLH 50 ppm, no specific antidote, AsH₃/H₂S cross-sensitivity, multi-organ toxicity.
NDIR detection at 4.26 µm, respiratory stimulant mechanism compounding co-present toxins, CO₂ effect on O₂ sensor (KOH electrolyte depletion), fermentation/suppression system sources, IDLH 40,000 ppm.