Array of pluvio meters. Meaning of data unclear (?)@en

Type: Pressure Sensor Keller DCX-4.0, SN 1467 This instrument is based on differential pressure measurement of two absolute sensors. The sensors measure pressure and temperature. Height of V-notch above sensor: -0.0015m. Datasets with correction contain the corrected discharge observed at the Vnotch. The discharge is calculated as Q=Cd*h^2.5 After correcting the logger measurements with hand measured depths we interpolated the difference (dH) Then we determined the factor Cd with discharge measurements which we also interpolated The timing of hand measurements can be corrected to better represent the logged values The last corrections (variable "clean_corr") were made for blocking of the V-notch weir as folows: z1 represents the last good discharge value after which sedimentation slowly starts blocking the weir z2 represents the moment when the blocking is max z3 represents the moment just before cleaning of the weir z4 represents the moment after cleaning of the weir The max difference in discharge is Q(z3)-Q(z4)@en

Code: GRW 21 Type: Temperature and Pressure sensor Make: Keller DCX-22 AA This instrument is based on differential pressure measurement of two absolute sensors. The sensors measure pressure and temperature. Height of piezometer above sensor: 1.18m.@en

Type: Pressure Sensor Keller DCX-4.0, SN 1454 This instrument is based on differential pressure measurement of two absolute sensors. The sensors measure pressure and temperature. Height of V-notch above sensor: hV=0.145m. The discharge is calculated with the rating curve Q=C*(h-hV)^2.5 where C is a calibration constant and h results from the pressure difference (Willem Luxemburg, Martijn Westhoff).@en

Type: Pressure Sensor Keller DCX-4.0, SN 1454 This instrument is based on differential pressure measurement of two absolute sensors. The sensors measure pressure and temperature. Height of V-notch above sensor: hV=0.145m. The discharge is calculated with the rating curve Q=C*(h-hV)^2.5 where C is a calibration constant and h results from the pressure difference (Willem Luxemburg, Martijn Westhoff).@en

Type: Casella Tipping Bucket 100000 E This instrument measures rainfall by counting the times a bucket tips over due to filling with rainfall. Aperture 400 cm3 (?) Bucket size 0.2mm (?)@en

Type: Pressure Sensor Keller DCX-4.0, SN 1466 This instrument is based on differential pressure measurement of two absolute sensors. The sensors measure pressure and temperature. Height of V-notch above sensor: -0.017m.@en

In 2004 Delft University of Technology has developed a forest floor interception measuring device. It measures the evaporation from interception of the forest floor. The device consists of a permeable upper basin filled with forest floor and a watertight lower basin that are weighed continuously with strain gauges. Rainfall is measured with a tipping bucket near the interception device. Evaporation measurement. Area basin 0.36 m2, 2x3 strain gauges: type FLA-6, resistance 120 Ohm. Valve (<18 jan 2006): electronic magnetic valve Type: MBMG2Z-1263008-12V. (KOBOLD Instrumentatie BV, Arnhem) Valve (> 18 jan 2006): electronic magnetic valve (12VDC) Type: MBMG2Z-1264020. Messing 3/4 "(?) (KOBOLD Instrumentatie BV, Arnhem) Temperature sensor: LM335, output 10 mV/K (Farnell). IMD descriptions of Huewelerbach and Westerbork are almost equal, including date of valve change. Is this correct? Meaning of data is unclear (?)@en

According to original data the location is Westerbork NL but this is probably wrong Evaporation measument. Area basin 1.00 m2, 2x3 strain gauges: type FLA-6, resistance 120 Ohm. Valve (<18 jan 2006): electronic magnetic valve Type: MBMG2Z-1263008-12V. (KOBOLD Instrumentatie BV, Arnhem) Valve (>=18 jan 2006): electronic magnetic valve (12VDC) Type: MBMG2Z-1264020. Messing 3/4 " (KOBOLD Instrumentatie BV, Arnhem) Temperature sensor: LM335, output 10 mV/K (Farnell). Throughfall: tipping bucket (?) & pluvio meters (?). Meaning of data is unclear (?)@en

Surface area of the Attert basin at measurement station Useldange is 245 km2 The measurement station of Useldange in the Attert river (LU) is part of a wider hydro-climatological measurement network, encompassing the whole of the Grand Duchy of Luxembourg. Discharge data obtained by the measurment stations are used for hydrological modeling, floodforcasting, climate change analysis and analytical hydrology.@en