Page 104. Gas CoolerExhaust gas with a temperature above the steam dew point (35 -65 °C) is introduced into a long spiralling gas path with a surfacecoated metal body with good thermal conductivity. The gas radiatesits heat to this metal body. A Peltier element (semi-conductor coolingelement) powered by a continuous current is thermally connectedwith this body and with a second metal body with cooling ribs andventilation slots.The flow thru the Peltier element creates a heat transfer fromWARM to COLD, drains the heat of the metal body flown by gas andconveys it to the outer cooling body. This heat is conveyed to thesurrounding air with the aid of a fan.The condensation formed by the heat loss of the gas drops in a re-ceptacle and is pumped out automatically via a peristaltic pump.On battery operation alone, the Peltier cooler can be switched offto save battery power. In the Gas Analysis menu press ,select Peltier I/0 and press . To switch the Peltier coolerback on, repeat these steps.FanWARMCOLDPeltierelementGasoutletGas inletLevelmonitoringCondensateevacuationThe Peltier cooler consumes a lot ofpower so the cooling efficiencymay be reduced if the analyzer isrunning on battery power alone!