OLLI gas measurement & warning instrument Explosion-proof & compact handheld gas measurement instrument as diffusion device. It can be used for up to 5 combustible and toxic gases as well as oxygen and comes in an extremely rugged 2C synthetic housing with a Li-Ion rechargeable battery. Charging the battery in potentially explosive atmospheres is not permitted! Up to 3 gas sensors can be installed (Ex/Ox/Tox). Assembly is based on customer requirements. Moreover, a pressure sensor can be installed. The instrument can be equipped with an optional pump. Operating time > 50 hours (depending on type & number of installed sensors and ambient conditions, w/o illumination) Measurement ranges are subject to sensor assembly Dimensions: 136 x 78 x 43 mm Weight: approx. 350 g Explosion-proof measurement instrument (active & passive) Measuring function certified for methane (CH4), propane (C3H8), oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2), hydrogen sulfide (H2S) according to the following European standards: EN 60079-29-1 EN 50104 EN 45544-1 EN 45544-3 Applied Brazilian standards: ABNT NBR IEC 60079-0 ABNT NBR IEC 60079-1 ABNT NBR IEC 60079-11 Marking INMETRO: Ex db ib IIB T4 Gb DNV 22.0010 X Temperature range: -20°C <= Ta <= +50°C