关键词: 化工测量技术与仪器仪表, 光吸收传感器, 生物活性, 仪器标定, 污水活性测定仪

Abstract: A constant wavelength light absorption sensor was developed using the feature that the biologically active formazane solution extracted from the waste water has the maximal absorption peak for the light with wavelength 485 nm.This sensor transforms the biological activity of the extracted solution into the electric signal.Based on it, a portable intelligent waste water activity determinator was developed,with which the biological activity index data can be read directly,stored and printed out.The precise calibration of the instrument was realized by the appropriate design of its hardware and software.

Key words: chemical surveying technology and instrument & meter, light absorption sensor, biological activity, instrument calibration, waste water activity determinator