Description
Open Standpipe Piezometer – Model EPP-10SP
The EPP-10SP Open Standpipe is a mechanical groundwater monitoring system designed to measure groundwater levels and their variations over time.
It consists of a PVC pipe sealed along its entire length, installed in a drilled borehole so that it is open to water flow at the bottom and open to the atmosphere at the top.
The lower intake section is made of a PVC slotted pipe wrapped in geotextile material, which prevents fine soil particles from entering and clogging the borehole. The riser pipes above are joined with integrated sockets and end caps, providing a watertight, corrosion-resistant connection.
Groundwater levels are measured using the EPP-10/6 Water Level Sounder (Dipmeter) — a probe lowered through a flat, precisely marked cable that allows accurate and repeatable readings of the water table elevation at the observation point.
Specifications
| Parameter | Details |
|---|---|
| Instrument Name | Open Standpipe Piezometer |
| Model | EPP-10SP |
| Sensor Type | Mechanical |
| Construction | PVC slotted pipe with geotextile cover and riser pipes (50 mm OD) |
| Applications | Monitoring groundwater level and temporal variation in soil or rockfill formations |
| Measured Parameter | Groundwater level |
| Range | Depends on EPP-10/6 water level sounder (dipmeter) used |
| Key Features / Advantages | Simple, durable, and low-maintenance system suitable for long-term hydrogeological monitoring |
| Protection / Material | Corrosion-resistant PVC, geotextile filtration wrap |
| Typical Borehole Diameter | 60–100 mm depending on installation design |
