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פותח על ידי קלירמאש פתרונות בע"מ -
Design and numerical analysis of a button heat pulse probe for soil water content measurement
Year:
2009
Source of publication :
Vadose Zone Journal
Authors :
קמאי, תמיר
;
.
Volume :
8
Co-Authors:
Facilitators :
From page:
167
To page:
173
(
Total pages:
7
)
Abstract:
Evaluation of a newly designed button heat pulse probe (BHPP) demonstrated the potential for improved soil water content measurements. Compared with the conventional heat pulse probe (HPP), the BHPP does not use needles, but instead consists of a ring-shaped 6-mm-radius heating element and a central thermistor, both embedded in the face of a plastic disk (6 mm thick and 16 mm in diameter). After calibration of the effective heater-thermistor spacing from temperature response measurements in agar, a sensitivity analysis was conducted to demonstrate the potential advantages of the BHPP. Measurement accuracy and robustness of the BHPP were significantly improved compared with the conventional HPP. Errors associated with needle deflection were eliminated by the design, whereas the water content measurement sensitivity was increased by the central placement of the thermistor. We used inverse modeling with a finite-element heat transport model to illustrate the increased sensitivity of the BHPP to soil water content measurements. © Soil Science Society of America. All rights reserved.
Note:
Related Files :
accuracy assessment
agar
comparative study
Design
Error analysis
probe
Sensitivity analysis
Soil water
Water content
עוד תגיות
תוכן קשור
More details
DOI :
https://www.scopus.com/inward/record.uri?eid=2-s2.0-62149101417&doi=10.2136%2fvzj2008.0106&partnerID=40&md5=240a461fe83cd823390b375b0ca994cd
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26117
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:20
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Scientific Publication
Design and numerical analysis of a button heat pulse probe for soil water content measurement
8
Design and numerical analysis of a button heat pulse probe for soil water content measurement
Evaluation of a newly designed button heat pulse probe (BHPP) demonstrated the potential for improved soil water content measurements. Compared with the conventional heat pulse probe (HPP), the BHPP does not use needles, but instead consists of a ring-shaped 6-mm-radius heating element and a central thermistor, both embedded in the face of a plastic disk (6 mm thick and 16 mm in diameter). After calibration of the effective heater-thermistor spacing from temperature response measurements in agar, a sensitivity analysis was conducted to demonstrate the potential advantages of the BHPP. Measurement accuracy and robustness of the BHPP were significantly improved compared with the conventional HPP. Errors associated with needle deflection were eliminated by the design, whereas the water content measurement sensitivity was increased by the central placement of the thermistor. We used inverse modeling with a finite-element heat transport model to illustrate the increased sensitivity of the BHPP to soil water content measurements. © Soil Science Society of America. All rights reserved.
Scientific Publication
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