The body and funnel of the new gauge are manufactured from an aluminium alloy with an accurately machined septum ring at the top, giving an aperture of 400 cm2.
The tipping bucket mechanism is mounted inside the body on a cast aluminium alloy base, incorporating a built-in spirit level to ensure correct positioning.
Heater unit is operated via an adjustable thermostat, which controls the supply to two power resistors. The thermostat is factory-set to switch the heater on at 3oC to ensure that the mechanism is kept above freezing point.
The heater requires a 24 V AC supply, which is obtained from the isolated and fully protected mains transformer supplied.
Casella Tipping Bucket Rain Gauges are reliable and extremely robust devices intended for use as stand-alone sensors operating within an existing logging or data acquisition system.
This latest 200cm2 version of Tipping Bucket Rain Gauge is based on the best selling 400cm2 gauge supplied by Casella CEL worldwide and has been specially designed for many applications that now require a gauge with smaller diameter for hydrometric applications.
The measuring principle complies with ‘Guide to Meteorological Instruments No. 8 of the WMO’.
- Proven tipping bucket mechanism
- Catchment area of 200cm2
- Resolution of 0.2 mm
- Accuracy 1% (@26mm/hr)
- Integral Levelling screws and bulls eye level
- 0.2 & 0.5 mm bucket size
- Double output relay contacts
- 5 mm diameter drop tube
- Bucket adjusting studs increased to M6
- Retained hexagonal headed long base-mounting screws for additional security
- Bucket painted BS 14C39 green
- Quick-release terminal blocks and mil spec external connectors rated to IP67 fitted to underside for rapid exchange in the field
- Heater can be retro-fitted to pre-drilled base
A new version of the Casella Tipping Bucket Rain Gauge is available. It has been specifically adapted to meet the requirements of the UK Environment Agency.
The casing and funnel of the new gauge are manufactured from an aluminium alloy with an accurately machined septum ring at the top, giving an aperture of 400 cm2 Connection to logging equipment is via IP67 rated quick-release connectors under the base plate.
Extended mounting screws are fitted to raise the base plate above ground level.
The rain gauge calibration complies with Method 1 of BS 7483.