When planning a gas warning system, the risk of explosion must be determined. EX zones with an increased risk of explosion require the use of ATEX-certified gas sensors. EX zones are areas in which an explosive atmosphere consisting of a mixture of air and combustible substances in the form of gas, vapor or mist can be expected to occur during normal operation. For all other applications we recommend the use of the ME 1250 gas sensors.

with the exception of EX zones

with increased risk of explosion