The Chillcard NG range of NDIR gas sensors from Edinburgh Sensors has been extended to include two new gases; namely CO (carbon monoxide) and CO2 (carbon dioxide).
Their standard sensors for these gases use a miniature lamp with a tungsten filament as the source of infrared light. However, in applications such as endothermic gas annealing furnaces and gasification where high levels of H2 (hydrogen) are present, the lamp can have a reduced lifetime.
It is possible to repair the sensor but this means the gas sensor cannot be used until
the lamp is changed and the sensor recalibrated. The new Chillcard sensors are built with a
micro-machined thermal infrared emitter which has a longer lifetime in these challenging
environments, giving less downtime and reduced long-term cost of ownership.