【摘要】 芬兰维萨拉公司最新研制的光学CO２传感器Carbocap，其工作原理采用了单束 双波长非发散性红外线测量方法，其独特之处在于它的滤光镜——一种袖珍电子调谐干扰仪 ．这种滤光镜保证了它所透过的光波波长的精确性和稳定性，避免了由于滤光镜及探测器不 匹配而发生的问题及传统的旋转式滤光镜所产生的磨损．更多还原

【Abstract】 A new CO２ gas sensor was developed in Vaisala company, a IR measuring metho d of single light beam and double wave length was used in the sensor. Its filter lens, a new electronic interference unit of tuning type can guarantee the accur acy and stability of the wave length of the transmitted optics. Thus, the proble m which occurs in non-match of filter lens and detector, and the abrasion produ ced by using rotary filter lens can be avoided.更多还原