Hydrographs after Precipitation HM 141
Hydrographs after Precipitation
|Name:||Hydrographs after Precipitation|
Hydrographs are an important tool for the representation of hydrological data such as precipitation, groundwater levels or discharges.
HM 141 produces precipitation of varying duration and intensity. The storage capacity of soils with different saturation is also examined. Using various dewatering is examined it is possible to demonstrate the relationships between precipitation and seepage.
The trainer includes a tank with a sand filling, which is flowed through by water. The water is supplied to the tank via a precipitation device with two nozzles that can be adjusted separately via valves. To study different drainages, the water is drained either via a drainage pipe or a drain chamber, which is separated from the experimental section by a screen.
The draining water is distributed over 17 transparent chambers. This creates a profile over time of the water drain. The water levels are measured and plotted in a hydrograph.
Drip pans can be used to demonstrate the lag of the drainage through rainwater retention basins.
The water supply is controlled by a valve and read on a flow meter. The timed discharges are adjusted via electronic timers.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
- effect of precipitation of varying duration or intensity
on soils with different saturation
- record hydrographs after precipitation
- storage capacity of soils with different saturation
- compare natural dewatering with dewatering via
- influence of rainwater retention basin on the
* Effect of precipitation on soils1
* Drainage of the soil either through drainage pipe
or drain chamber with screen1
* Recording of hydrographs1
* Influence of rainwater retention basin on the
* Precipitation time, lag time and measurement time
can be adjusted via separate timers
HM 165 -- Studies in Hydrology
HM 167 -- Ground Water Flow
 investigation of the effect of precipitation on soils
 stainless steel experimental tank with transparent splash guard
 precipitation device with two nozzles, adjustable precipitation area and quantity
 precipitation time can be adjusted via solenoid valve with timer
 distribution to 17 chambers by timer
 mobile sled carriage distributes draining water to 17 chambers in the measuring tank
 water drain either via removable drain chamber with fine-mesh screen or via drainage pipe
 separate flushing connection for pipelines
 drip pans as rainwater retention basins
 rotameter (inlet), indicator of precipitation time, lag time and measurement time
- volume: 1300x600x200mm
- max. sand height: 185mm
- 2 nozzles, individually adjustable
- flow rate: 1...6,7L/min, square spray pattern
- precipitation: max. 320L/h
Measuring tank with 17 chambers
- volume: 17x0,9L
- precipitation: max. 99min59s
- lag time until start of measurements: max. 99min59s
- measurement time per chamber: max. 99min59s
4 drip pans: 305x215x55mm
Steel scale: 200mm
- flow rate: 30...320L/h
Dimensions and Weight LxWxH: 1600x1000x1475mm
Weight: approx. 195kg Required for Operation 230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase; sand (1...2mm grain size)
Water connection, water drain Scope of Delivery 1 trainer, 4 drip pans, 1 set of hoses, 1 set of instructional material Order Details
070.14100 HM 141 Hydrographs after