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Decagon's Gee
deep drainage monitor is one way to monitor water and chemical
infiltration through soils to underlying groundwater. The Gee
passive capillary lysimeter (Drain Gauge) is much smaller than
comparable instruments, and its cost allows for more measurement
sites over a large range of locations for the monitoring of deep
drainage. The Drain Gauge is constructed of steel and plastic parts.
There are no moving parts in the instrument.
The unit can
be installed using an auger system, or using a shovel combined with
a post-hole digger.
It can be used
in a variety of applications, including:
- Water balance studies
- In farming operations to measure and control
irrigation during a cropping season.
- At recreational facilities, such as golf courses, to
measure and control excess water and nutrient losses.
- Waste landfill sites to advise operators when drainage
is occurring and where cover systems need to be improved.
Specifications
- Total
height:
147cm (58 in.)
- Divergence
Control Tube (DCT)length:
66cm
- DCT
diameter:
20cm
- DCT
Water Interception:
1.0mm of percolation per drain
- Resolution: ±0.03mm
- Volume per siphon event:
31 cm3, ±10%
- Sample Collection Reservoir volume:100ml
- Water level gauge resolution:
1ml or better
- Measurement time: 10ms
- Power requirements: < 3mA @ 2.5VDC, for 10ms
- Output: Proportional mV-to-water level
- Operating temperature:
0-50 °C
- Cable length: 7.6m (25ft)
- Wick tube length: 1m (3ft)
- Wick Material: 60cm inert fiberglass
- Construction Material:
Galvanized steel
- Weight:
10kg (22 lbs.)
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