The open standpipe is used for measuring ground water level and its variation with time. It consists of a pipe that is sealed along its entire length and installed in a borehole such that it is open to water flow at bottom and open to atmosphere at the top. The intake is a slotted pipe covered with geo-textile material, to prevent soil particles from clogging the borehole.
The PVC pipe can be designed to any length. standard PVC lengths come in 6m. standard 32 mm diameter standpipes can be installed using our CPT Rig, this makes for a fast and easy install for both standpipe and no drilling mess as a result.
The depth to the water level in the standpipe is measured by lowering model EPP-10/6 water level sounder (also called dipmeter) into the pipe. The water level sounder probe is lowered from the surface with the help of flat cable,with precise markings, for taking observations.The level of water in such a borehole or well corresponds to the water table at that location.The level of water in such a borehole or well corresponds to the water table at that location.
| Porous tip (L) | PVC slotted pipe, 50 mm o.d., covered with geo-textile |
| Standpipe (Y) | 50 mm o.d., 44.5 i.d., 3 m length PVC pipe with an inbuilt socket for jointing |
GDS has a variety of instruments for hire, these Instruments, Readouts and Dataloggers are available for product hire on a short-term (fortnightly) or long-term (monthly) basis including, but not limited to, the following:
