• Permeable catchment area fed with ‘rain’ from overhead spray nozzles and/or by groundwater flow
from ends of tank
• Spray nozzles to supply half or all of catchment area
• Piezometer tappings to measure water table profile
• Can measure ‘drawdown’ due to single or two interacting wells
• Adjustable inclination of catchment area angle
• Includes flow meter to measure flow to the catchment area
• Run-off and well flows measured by calibrated rectangular weir
• Self-contained – requires only an electrical supply
Essential Services
Electrical supply:
Single-phase 230 VAC, 5 A, or 110 VAC, 10 A. (specify on
order)
Floor space needed:
Approximately 3 m x 2 m
Operating Conditions
Operating environment:
Laboratory
Storage temperature range:
–25°C to +55°C (when packed for transport)
Operating temperature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at
40°C
Specifications
Nett dimensions and weights:
2400 x 1080 x 2050 mm and 450 kg
Packed dimensions and weights:
5.77 m3 and 600 kg (approx – packed for export)
Main parts:
• Catchment area: Stainless steel tank 2 m x 1 m
Normal depth of permeable medium 180 mm
• Spray nozzles: Eight, in two banks of four, with
adjustable spray direction
• Reservoir tank: Capacity approx 220 litres
• Recommended medium: Washed sand graded 0.5 mm
to 1.5 mm
