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| The Calibration Method and Uncertainty Evaluation for Cooking Fumes Monitor |
| SHEN Shang-yi1,ZHANG Guo-cheng1,SI Chuan-hai2,ZHANG Chun2,Lü Chao1,WU Dan1 |
1. Beijing Institute of Metrology,Beijing 100029,China
2. Certification Center(Beijing) of CAEPI,Beijing 100037,China |
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Abstract Due to the efficiency and convenience,cooking fumes monitors has been widely used in environmental monitoring. However,it is urgent to establish a method of traceability for the instrument to ensure the accuracy of monitoring. The calibration method of cooking fumes monitors is established by using the self-built calibration device,and the measurement uncertainty is evaluated. The deviation of stability and uniformity of the concentration of cooking fumes monitors in the self-built calibration device is less than 5%,which provides a reliable detection condition for the instrument and its standard method. In addition,two typical operating conditions (flue gas flow rate: 4.6m/s,6.2m/s) of small and medium-sized dining lampblack treatment facilities are selected as test conditions. Two equipments are calibrated and tested using cooking oil fume concentration calibration device. After calibration, the relative error between the instrument measurement value and the standard method measurement value is less than 20%, meeting the requirements for online monitoring of cooking oil fume.
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Received: 15 November 2021
Published: 18 April 2023
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2023, Vol. 44 
