The precipitation element consists of two groups of three nozzles. The core element is a sand-filled, stainless steel experiment tank with inclination adjustment. Water can flow in (groundwater) or out (drainage) via two chambers on the side. Supply and water drain can be opened and closed, thus allowing a wide variety of experimental conditions. The experiment tank is separated from the chambers by fine mesh screens. To study the lowering of groundwater, two wells with open seam tubes are available. 

It can be used to study seepage and groundwater flows after precipitation. Variable precipitation density and areas and different groundwater supply and drain possibilities allow a wide variety of experiments.

At the bottom of the experiment tank there are measured connections to detect groundwater levels, which are displayed on 19 tube manometers. The water supply is controlled by a valve and read on a flow meter. The water drain is determined by a measuring weir.

Specification:

Inclinable stainless steel experiment tank contains 19 measuring connections to detect groundwater levels, transparent splash guard and screens for separating the chambers

Water supplies and drains can be selected individually

Transparent measuring tank (flow)

2 wells with open seam tubes in the experiment tank

Precipitation device with 8 nozzles, adjustable

Instruments: tube manometers (groundwater), flow meter (supply) and measuring weir in the measuring tank (drain)

Investigation of precipitation-discharge relationships, storage capacity of soils, seepage flows and groundwater flows

Closed water circuit.

Technical data:

Precipitation device

8 nozzles, switchable in 2 groups of 4 nozzles

Flow rate per nozzle: 1…4,7L/min, square spray pattern

Experiment tank

Area: 2x 1m2, depth: 0,2m

Max. sand filling: 0,3m3

Inclination adjustment: -2,5…5%

Pump

Power consumption: 0,55kW

Max. flow rate: 2000L/h

Storage tank, stainless steel: content 180L

Measuring ranges

Pressure: 19x 0…300mm

Flow rate:

1x 0…1700L/h (water drain)

1x 150…1700L/h (water supply)

230V, 50Hz, 1 phase

230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase.