The heated sampling system is a combination of a heated sample line and a heated sample filter. The sample line is 500mm long; the filter element can be replaced very quick with the bayonet lock. Beside the very precisious and constant regulation of the line and filter temperature, there is a separate controll point fort he temperature at the filterinlet, where you have an information of the exhaust gas temperature. Also the calibration gas (prewarmed) can directly connected with the unit. The thermocouple is available as PT 100 or NiCrNi.