Low-cost automatic station for compost temperature monitoring.

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Bibliographic Details
Title: Low-cost automatic station for compost temperature monitoring.
Alternate Title: Estação automática de baixo custo para monitoramento de temperatura da compostagem.
Authors: Jordão, Marcelo D. L.1 dilellocn@gmail.com, de Paiva, Kary2 kary.paiva@gmail.com, Firmo, Heloisa T.3 hfirmo@poli.ufrj.br, Inácio, Caio T.4 caio.teves@embrapa.br, Rotunno Filho, Otto C.2 otto@coc.ufrj.br, de A. e Lima, Tomé5 taltome@poli.ufrj.br
Source: Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi. 2017, Vol. 21 Issue 11, p809-813. 5p.
Subjects: Composting, Temperature measurements, Organic wastes as soil amendments, Automation, Temperature sensors
Abstract (English): Temperature monitoring is an important procedure to control the composting process. Due to cost limitation, temperature monitoring is manual and with daily sampling resolution. The objective of this study was to develop an automatic station with US$ 150 dollars, able to monitor air temperature at two different points in a compost pile, with a 5-min time resolution. In the calibration test, the sensors showed an estimated uncertainty from ± 1 to ± 1.9 °C. In the field validation test, the station guaranteed secure autonomy for seven days and endured high humidity and extreme temperature (> 70 °C). [ABSTRACT FROM AUTHOR]
Abstract (Portuguese): Em uma unidade de compostagem, o monitoramento da temperatura é fundamental para o controle do processo de compostagem. Devido à limitação de custo, o monitoramento da temperatura é manual e com resolução amostral diária. O objetivo do estudo foi desenvolver uma estação automática de US$ 150 dólares capaz de monitorar, a cada cinco minutos, a temperatura do ar em dois pontos diferentes de uma leira de compostagem. No teste de calibração, os sensores apresentaram uma incerteza estimada entre ± 1 a ± 1,9 °C. No teste de validação de campo, a estação garantiu autonomia segura por sete dias e suportou condições de temperatura extremas (> 70 °C). [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Temperature monitoring is an important procedure to control the composting process. Due to cost limitation, temperature monitoring is manual and with daily sampling resolution. The objective of this study was to develop an automatic station with US$ 150 dollars, able to monitor air temperature at two different points in a compost pile, with a 5-min time resolution. In the calibration test, the sensors showed an estimated uncertainty from ± 1 to ± 1.9 °C. In the field validation test, the station guaranteed secure autonomy for seven days and endured high humidity and extreme temperature (> 70 °C). [ABSTRACT FROM AUTHOR]
ISSN:18071929
DOI:10.1590/1807-1929/agriambi.v21n11p809-813