Construction and calibration of a bar weighing lysimeter
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4025/actasciagron.v37i3.19368 http://hdl.handle.net/11449/164894 |
Resumo: | Generally, standard lysimeters include a lever-load cell scale, which has become expensive compared to new electronic equipment available for experimental purposes. Currently, lysimeters containing weighing bars with up to 4 load cells are economically feasible. This goal of this study was to present the construction and calibration of four weighing lysimeters built using two rectangular tanks, with a surface area of 1.35 m(2) (1 m by 1.35 m) and a depth of 1.5 m, loaded on two weighing bars. Each bar had two high accuracy loading cells connected to a junction box and a datalogger by a coaxial cable. Calibration of each lysimeter was performed after field installation. The results showed a linear response (R-2 > 0.9999) of electric signal (mV) to mass increase or decrease (kg) with minimum hysteresis. The mean absolute error of the mass estimate (0.0245 to 0.2844 equivalent-mm) and a Willmott index between the observed and estimated data (d = 1.0000) indicate the high precision of the new equipment. The results allow concluding that the lysimeters in this study are appropriate for estimating evapotranspiration and other components of soil water balance. |
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Construction and calibration of a bar weighing lysimeterevapotranspirationwater balancesoil waterGenerally, standard lysimeters include a lever-load cell scale, which has become expensive compared to new electronic equipment available for experimental purposes. Currently, lysimeters containing weighing bars with up to 4 load cells are economically feasible. This goal of this study was to present the construction and calibration of four weighing lysimeters built using two rectangular tanks, with a surface area of 1.35 m(2) (1 m by 1.35 m) and a depth of 1.5 m, loaded on two weighing bars. Each bar had two high accuracy loading cells connected to a junction box and a datalogger by a coaxial cable. Calibration of each lysimeter was performed after field installation. The results showed a linear response (R-2 > 0.9999) of electric signal (mV) to mass increase or decrease (kg) with minimum hysteresis. The mean absolute error of the mass estimate (0.0245 to 0.2844 equivalent-mm) and a Willmott index between the observed and estimated data (d = 1.0000) indicate the high precision of the new equipment. The results allow concluding that the lysimeters in this study are appropriate for estimating evapotranspiration and other components of soil water balance.Univ Estado Mato Grosso, Dept Agron, Tangara Da Serra, Mato Grosso, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Engn Rural, Sao Paulo, BrazilUniv Estadual Maringa, Dept Agron, BR-87020900 Maringa, Parana, BrazilUniv Estadual Paulista, Escola Super Agr Luiz de Queiroz, Dept Engn Biossistemas, Sao Paulo, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Engn Rural, Sao Paulo, BrazilUniv Estadual Paulista, Escola Super Agr Luiz de Queiroz, Dept Engn Biossistemas, Sao Paulo, BrazilUniv Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacaoUniv Estado Mato GrossoUniversidade Estadual Paulista (Unesp)Universidade Estadual de Maringá (UEM)Mariano, Daiane de CinqueFaria, Rogerio Teixeira de [UNESP]Lourenco de Freitas, Paulo SergioLena, Bruno PatiasJohann, Andre Luiz [UNESP]2018-11-27T00:47:58Z2018-11-27T00:47:58Z2015-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article271-278application/pdfhttp://dx.doi.org/10.4025/actasciagron.v37i3.19368Acta Scientiarum-agronomy. Maringa: Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, v. 37, n. 3, p. 271-278, 2015.1807-8621http://hdl.handle.net/11449/16489410.4025/actasciagron.v37i3.19368S1807-86212015000300271WOS:000360379000001S1807-86212015000300271.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Scientiarum-agronomyinfo:eu-repo/semantics/openAccess2024-06-06T15:18:16Zoai:repositorio.unesp.br:11449/164894Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:35:28.993379Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Construction and calibration of a bar weighing lysimeter |
title |
Construction and calibration of a bar weighing lysimeter |
spellingShingle |
Construction and calibration of a bar weighing lysimeter Mariano, Daiane de Cinque evapotranspiration water balance soil water |
title_short |
Construction and calibration of a bar weighing lysimeter |
title_full |
Construction and calibration of a bar weighing lysimeter |
title_fullStr |
Construction and calibration of a bar weighing lysimeter |
title_full_unstemmed |
Construction and calibration of a bar weighing lysimeter |
title_sort |
Construction and calibration of a bar weighing lysimeter |
author |
Mariano, Daiane de Cinque |
author_facet |
Mariano, Daiane de Cinque Faria, Rogerio Teixeira de [UNESP] Lourenco de Freitas, Paulo Sergio Lena, Bruno Patias Johann, Andre Luiz [UNESP] |
author_role |
author |
author2 |
Faria, Rogerio Teixeira de [UNESP] Lourenco de Freitas, Paulo Sergio Lena, Bruno Patias Johann, Andre Luiz [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Univ Estado Mato Grosso Universidade Estadual Paulista (Unesp) Universidade Estadual de Maringá (UEM) |
dc.contributor.author.fl_str_mv |
Mariano, Daiane de Cinque Faria, Rogerio Teixeira de [UNESP] Lourenco de Freitas, Paulo Sergio Lena, Bruno Patias Johann, Andre Luiz [UNESP] |
dc.subject.por.fl_str_mv |
evapotranspiration water balance soil water |
topic |
evapotranspiration water balance soil water |
description |
Generally, standard lysimeters include a lever-load cell scale, which has become expensive compared to new electronic equipment available for experimental purposes. Currently, lysimeters containing weighing bars with up to 4 load cells are economically feasible. This goal of this study was to present the construction and calibration of four weighing lysimeters built using two rectangular tanks, with a surface area of 1.35 m(2) (1 m by 1.35 m) and a depth of 1.5 m, loaded on two weighing bars. Each bar had two high accuracy loading cells connected to a junction box and a datalogger by a coaxial cable. Calibration of each lysimeter was performed after field installation. The results showed a linear response (R-2 > 0.9999) of electric signal (mV) to mass increase or decrease (kg) with minimum hysteresis. The mean absolute error of the mass estimate (0.0245 to 0.2844 equivalent-mm) and a Willmott index between the observed and estimated data (d = 1.0000) indicate the high precision of the new equipment. The results allow concluding that the lysimeters in this study are appropriate for estimating evapotranspiration and other components of soil water balance. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-01 2018-11-27T00:47:58Z 2018-11-27T00:47:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4025/actasciagron.v37i3.19368 Acta Scientiarum-agronomy. Maringa: Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, v. 37, n. 3, p. 271-278, 2015. 1807-8621 http://hdl.handle.net/11449/164894 10.4025/actasciagron.v37i3.19368 S1807-86212015000300271 WOS:000360379000001 S1807-86212015000300271.pdf |
url |
http://dx.doi.org/10.4025/actasciagron.v37i3.19368 http://hdl.handle.net/11449/164894 |
identifier_str_mv |
Acta Scientiarum-agronomy. Maringa: Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, v. 37, n. 3, p. 271-278, 2015. 1807-8621 10.4025/actasciagron.v37i3.19368 S1807-86212015000300271 WOS:000360379000001 S1807-86212015000300271.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Scientiarum-agronomy |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
271-278 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao |
publisher.none.fl_str_mv |
Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128675872243712 |