Groundwater level measurement in off-grid regions
Value for the Fachhochschule Westküste
Groundwater levels of different locations are measured in gauging tubes; often observers determine the water levels using a well depth finder or electric light plummet manually.
The measuring values are visualised using contour lines; this also allows conclusions about the flow direction of the groundwater.
Due to decreasing groundwater levels in the north reservoir polder in Nordermeldorf, State Agency for Agriculture, Environment and Rural Areas in Schleswig-Holstein has contracted a project with the following objectives:
A submersible pressure transmitter VEGAWELL52 records the water level. The evaluation unit VEGAMET391Eth lreads out via the 0…20 mA interface and HART protocol and dispatches via the GPRS router IMON-G100 from INSYS icom.
The energy-saving process control is assumed by the Monitoring App in the router by switching the power supply of the VEGA devices time-controlled on and off via a relay output at the router.
Monitoring App helps to save energy