Analyzing device having motor and cam disc and analyzing method using such analyzing device

The invention relates to an analysis device (100) and a method for analyzing a gas (G) for a predetermined substance. The sensor measures a measure for an amount or concentration of a substance in a gas sample located in the measurement chamber (3). The movement of the actuating unit (4, 17, 19) in the first direction (R.1) increases the volume of the suction chamber unit (5). The movement of the actuating unit (4, 17, 19) in the second direction (R.2) reduces the volume of the suction chamber unit (5). A motor (7) rotates the cam disc (1) about an axis (MA). The actuating unit (4, 17, 19) is mechanically coupled to the cam disc (1). Each rotational position of the cam disc (1) relative to said axis (MA) determines the position of the actuation unit (4, 17, 19) and thus the volume of the suction chamber unit (5). 本发明涉及用于针对预设物质分析气体(G)的分析设备(100)和方法。传感器测量针对位于测量腔室(3)中的气体样本中的物质的量或浓度的量度。操纵单元(4,17,19)沿第一方向(R.1)的运动增大吸气腔室单元(5)的体积。操纵单元(4,17,19)沿第二方向(R.2)的运动减小吸气腔室单元(5)的体积。马达(7)使凸轮盘(1)围绕轴线(MA)转动。操纵单元(4,17,19)与凸轮盘(1)机械联结。