%0 Journal Article
%T AMMONIA CONCENTRATION MONITORING USING ARDUINO PLATFORM
%A Dodigovi£¿
%A Filip
%A Gr£¿i£¿
%A Ivana
%A Marku£¿i£¿
%A Petar
%A Petric
%A Marko
%A Radeti£¿
%A Lucija
%A Topi£¿
%A Mateo
%J -
%D 2019
%R 10.37023/ee.6.1.4
%X Sa£¿etak In order to evaluate the efficacy of ammonia photocatalysis, it is necessary to continuously monitor its concentration during the process. This paper presents ammonia concentration monitoring using a low cost (non-professional) electronic device. The device is based on an open source electronic platform, and it is composed of the MQ-137 ammonia detection sensor, connected to the Croduino Basic 2 board. Sensitive material of the sensor is a metal oxide (SnO2). The change in the ammonia concentration causes a change in the electrical resistance, which is measured and used for the ammonia concentration estimation. Four measurements, with ammonia concentration ranging from 0-500 ppm were performed in the controlled environment. With the purpose of the device calibration and repeatability test, along with a low-cost device, the monitoring was carried out also with a professional device, Geotech GA5000 gas analyser. Using the information provided in the sensor datasheet, together with the measured data, the measurement error of the low-cost device was assessed. After calibration, ammonia concentrations measured using a low-cost device, are consistent with those obtained from the professional device
%K MQ-137 sensor
%K Arduino
%K ammonia concentration
%K photocatalyst
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=325243