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Main Title: Comparison of H2S Gas Sensors: A Sensor Management Procedure for Sewer Monitoring
Author(s): Pacheco Fernández, Micaela
Despot, Daneish
Barjenbruch, Matthias
Type: Article
Language Code: en
Abstract: Hydrogen sulphide (H2S) emissions are one of the major problems associated with sewer networks. This gas, with its characteristic smell of rotten eggs is highly toxic and leads to the corrosion of sewer infrastructures. To protect cities and ensure the safety of sewer workers, sewers are commonly monitored using H2S gas sensors. In this work, three commercial H2S gas sensors for air quality monitoring were compared at two different sites in Berlin, Germany. Two of the sensors provide online access to data, while the other one is a data logger. Moreover, based on statistical measures (RMSE, MAE, MB, and a graphical analysis), we evaluated whether a rotation/exchange between data logger (reference) and online sensors is possible without significant differences in the gas measurements. Experimental evaluation revealed that measurement differences are dependent on the H2S concentration range. The deviation between sensors increases as the H2S concentration rises. Therefore, the interchange between reference and online sensors depends on the application site and the H2S levels. At lower ranges (0–10 ppm) there were no observed problems. Finally, to support practitioners on-site, a management procedure in the form of a decision-making tool is proposed for assessing whether gas sensors should be exchanged/rotated.
Issue Date: 28-Sep-2021
Date Available: 11-Oct-2021
DDC Class: 570 Biowissenschaften; Biologie
Subject(s): air quality monitoring
decision making tool
gas sensors
hydrogen sulphide
sewer systems
Sponsor/Funder: DFG, 248198858, GRK 2032: Grenzzonen in urbanen Wassersystemen
Journal Title: Sustainability
Publisher: MDPI
Publisher Place: Basel
Volume: 13
Issue: 19
Article Number: 10779
Publisher DOI: 10.3390/su131910779
EISSN: 2071-1050
Appears in Collections:FG Siedlungswasserwirtschaft » Publications

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