・Among world’s smallest and lightest
・One-year sensor warranty
・Newly developed R sensor installed for improved performance.

Sampling method Diffusion type
Principle of detection Membrane Type Galvanic Cell Method
Detection range 0.0 to 25.0 vol%
Alarm setpoints L 18.0 vol% LL 18.0vol% H 25.0vol%
Type of alarm Gas alarm / fault alarm
Display of alarm Flashing lamp / buzzer / flashing gas concentration readout / vibration
Explosion protected construction Intrinsic safety
Explosion-proof class IECEx : Ex ia ⅡC T4 Ga
ATEX : Ⅱ1G Ex ia ⅡC T4 Ga
Ingress proof rating IP66/68(2m, 1h)
Approvals Japan Ex, ATEX, IECEx, Brazil Ex, JIS
CE marking EMC / ATEX / RoHS
Power source CR2450 coin type lithium ion battery
Continuous operation Approx. 4000 hours
Dimensions Approx. 63(W)×42(H)×22(D) mm (excluding projections)
Weight Approx. 45 g
Operating temperature range -20 to +50 ℃ (no sudden changes)
Operating humidity range 10 to 90 %RH (no condensation)
Target gas O2
Target Gas


Product Type