Development of a recording water flow meter using ultrasonic measurement of water levels in a slotted U-pipe

Enamorado, Santiago M.; Hurtado, María del Pilar; Andreu, L.; Martínez, Francisco García; Sánchez, José Morales; Delgado, Antonio; Abril, J.M.

doi:10.1016/j.agwat.2006.10.003

Cited by 5 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 2005, six recording drainage meters of original design based on the ultrasonic measurement of water levels in a grooved U-pipe were installed to measure drain flow. The design, with three grooves of different width in a U-pipe, allowed precise flow measurements in the range 0-4 L s −1 , and the ultrasonic probe produced high temporal resolution records (Enamorado et al, 2007). The records of discharges enabled the construction of the drainage hydrograph for each drainage event and for the whole season.…”

Section: Soil and Water Analysismentioning

confidence: 99%

Drain flow and related salt losses as affected by phosphogypsum amendment in reclaimed marsh soils from SW Spain

Hurtado¹,

Enamorado²,

Andreu³

et al. 2011

Geoderma

Self Cite

View full text Add to dashboard Cite

Section: Soil and Water Analysismentioning

confidence: 99%

Drain flow and related salt losses as affected by phosphogypsum amendment in reclaimed marsh soils from SW Spain

Hurtado¹,

Enamorado²,

Andreu³

et al. 2011

Geoderma

Self Cite

View full text Add to dashboard Cite

“…In this study, a small-sized pan-evaporimeter for dynamic analysis of evaporative demand in a greenhouse was developed by applying a supersonic sensor, which has often been used to measure the water level exactly (e.g., Enamorado et al, 2007). Furthermore, its performance and validity were examined by analyzing the characteristics of the pan evaporation rate on an hourly basis and its relation with the environmental elements, in addition, leaf transpiration rate in a greenhouse.…”

Section: Introductionmentioning

confidence: 99%

Development of a supersonic pan-evaporimeter for dynamic analysis of evaporative demand in a greenhouse

Yasutake

Ishikawa

Mori

et al. 2011

J. Agric. Meteorol.

View full text Add to dashboard Cite

A supersonic pan-evaporimeter was developed for performing dynamic analysis of evaporative demand in a greenhouse. The pan-evaporimeter comprises two parts: a small-sized cylindrical container (a diameter of 27 cm, a height of 15 cm) filled with water and a supersonic water-level detector. The pan evaporation rate (Epan) can be evaluated for an arbitrary time interval on the basis of the decrease in the water level due to evaporation from the pan-evaporimeter. The performance and validity of the panevaporimeter were examined by analyzing the characteristics of Epan on an hourly basis and its relation with the solar radiation, air temperature and humidity, wind speed, in addition, the transpiration rate of a tomato plant (Tr) in a greenhouse. A positive linear relationship was clearly obtained between the hourly Epan and the environmental elements, and then sensitivity of Epan to the environmental elements was revealed. Furthermore, a good correlation was found between the Epan and the Tr on hourly basis for one day. These results suggest that the developed pan-evaporimeter is a useful tool for analyzing the dynamics of evaporative demand and for estimating the transpiration rate in a greenhouse.

show abstract

“…Such devices are known as ultrasonic flow meters. Enamorado et al [16] used an ultrasonic measurement of water levels in a slotted U-pipe for the measurement of drainage water flow. However, only water levels and not the flow velocity were measured by an ultrasonic sensor.…”

Section: Introductionmentioning

confidence: 99%

Determination of Tile Drain Discharge under Variable Hydraulic Conditions

Szejba

Bajkowski

2019

Water

View full text Add to dashboard Cite

The aim of this study was an investigation of tile drain flow velocity under variable hydraulic conditions and of tile drain discharge using an ultrasonic flow meter. There is an essential variance between velocity values measured by an ultrasonic flow meter and reference values determined by a laboratory method. Differences result from specific measurement conditions, which appear in drainage pipe systems. The values of velocity measured by ultrasonic flow meters were higher than the reference values for three examined flow phases: Free, transient, and pressured flow. The discharge from a tile drain working on a partially filled up pipe in no-pressure conditions should be calculated by an adapted equation based on the California pipe method, whereas the discharge from a completely filled up drain pipe working over pressure should be calculated as a ratio between 0.428 times the measured velocity and the pipe cross-section area.

show abstract

Development of a recording water flow meter using ultrasonic measurement of water levels in a slotted U-pipe

Cited by 5 publications

References 11 publications

Drain flow and related salt losses as affected by phosphogypsum amendment in reclaimed marsh soils from SW Spain

Drain flow and related salt losses as affected by phosphogypsum amendment in reclaimed marsh soils from SW Spain

Development of a supersonic pan-evaporimeter for dynamic analysis of evaporative demand in a greenhouse

Determination of Tile Drain Discharge under Variable Hydraulic Conditions

Contact Info

Product

Resources

About