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פותח על ידי קלירמאש פתרונות בע"מ -
Evaluation of MPS-1 soil water potential sensor
Year:
2011
Source of publication :
Journal of Hydrology
Authors :
קמאי, תמיר
;
.
Volume :
402
Co-Authors:
Soil water matric potential sensors are essential for understanding agricultural and natural ecosystems. However, accurate sensors that can be used for a wide range of soil moisture conditions have yet to be developed. The MPS-1 sensor by Decagon Devices, Inc. was tested and calibrated in a laboratory setting using pressure plate and suction apparatuses. This study evaluated the general performance of the MPS-1 sensor by: (1) testing for a wide range of varying soil conditions, including temperature and hysteresis
(2) determining measurement range, sensitivity, consistency, accuracy, and variation among sensors
and (3) developing a laboratory calibration procedure prior to field installation. Sensitivity of the MPS-1 sensor was found to be a highly nonlinear function of soil matric potential. Sensor-to-sensor variations were large, but were partly removed using the presented one-point calibration. Variation among sensors is largely eliminated by using a sensor-specific calibration. The MPS-1 sensitivity to temperature was relatively small and inconsistent, and hysteresis effects were relatively minor. Individual sensor output readings were consistent in time, remaining almost constant over a measurement period of 1.5. years. By comparing calibrated MPS-1 sensors with tensiometers in the field, we conclude that measurement uncertainty is less than 10. kPa (or 0.1. bar) in the range from 10 to 60 kPa. © 2011 Elsevier B.V.
Facilitators :
From page:
126
To page:
134
(
Total pages:
9
)
Abstract:
Calibration; Hysteresis; Soil moisture dynamics; Soil water monitoring; Temperature
Note:
Related Files :
accuracy assessment
Hysteresis
measurement method
monitoring
Natural ecosystem
sensors
עוד תגיות
תוכן קשור
More details
DOI :
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955043811&doi=10.1016%2fj.jhydrol.2011.03.006&partnerID=40&md5=b8d3cc2f5f93cdcc9ccb28d53b4f79e1
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23958
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:04
Scientific Publication
Evaluation of MPS-1 soil water potential sensor
402
Soil water matric potential sensors are essential for understanding agricultural and natural ecosystems. However, accurate sensors that can be used for a wide range of soil moisture conditions have yet to be developed. The MPS-1 sensor by Decagon Devices, Inc. was tested and calibrated in a laboratory setting using pressure plate and suction apparatuses. This study evaluated the general performance of the MPS-1 sensor by: (1) testing for a wide range of varying soil conditions, including temperature and hysteresis
(2) determining measurement range, sensitivity, consistency, accuracy, and variation among sensors
and (3) developing a laboratory calibration procedure prior to field installation. Sensitivity of the MPS-1 sensor was found to be a highly nonlinear function of soil matric potential. Sensor-to-sensor variations were large, but were partly removed using the presented one-point calibration. Variation among sensors is largely eliminated by using a sensor-specific calibration. The MPS-1 sensitivity to temperature was relatively small and inconsistent, and hysteresis effects were relatively minor. Individual sensor output readings were consistent in time, remaining almost constant over a measurement period of 1.5. years. By comparing calibrated MPS-1 sensors with tensiometers in the field, we conclude that measurement uncertainty is less than 10. kPa (or 0.1. bar) in the range from 10 to 60 kPa. © 2011 Elsevier B.V.
Evaluation of MPS-1 soil water potential sensor
Calibration; Hysteresis; Soil moisture dynamics; Soil water monitoring; Temperature
Scientific Publication
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