定电位电解二氧化硫传感器特性研究

选用了3SF定电位电解型传感器作为二氧化硫连续在线监测探头。通过对该传感器各项特性指标的研究表明：该传感器在0～2500mg／m^3测量范围内，输出信号线性相关系数为0．9989，零点漂移为0．64％F．S．，相对准确度最大偏差为28mg／m^3，响应时间为30s，以上特性符合国家HJ／T76—2001标准中对二氧化硫传感器的各项指标要求，试验研究表明该传感器可用于二氧化硫连续在线监测。

Characteristic investigation of the fixed electric potential electroanalysis sulfur dioxide sensor

The 3SF fixed electric potential electroanalysis sensor was chosen as the online continuous detector of boiler sulfur dioxide emission. The investigation indicated that: at the scale of 0~ 2 500 mg/m 3, the relatively coefficient of output signal is 0.9989; the zero shift is 0.64% of full scale; the maximum relatively error is 28 mg/m 3; response time is 30 s. These characters conformed to the requests of sulfur dioxide sensor in the HJ/T 76-2001 Criterion. The investigation demonstrated that this sensor can be used as the online continuous detector of sulfur dioxide emission.