The 0.2mm TBRG is a reliable and extremely robust transducer, designed as a stand-alone
sensor for operation within an existing logging system, such as the Automatic
Weather Station. The body and funnel are made from aluminium alloy with an
accurately machined septum ring at the top giving an aperture of 400cm2. The
tipping bucket
mechanism is mounted inside the body on a cast aluminium-alloy base, incorporating
a built-in spirit level to ease correct positioning.
The rain gauge comprises
a divided bucket assembly, which is pivoted at the centre. Rain collects
in one side of the bucket, which then tips when a predetermined
volume of water has been collected. The tipping action discharges the collected
water and repositions the opposite side of the bucket under the discharge
nozzle ready for filling. The bucket tips are monitored by means of a sealed
reed
switch,
capable of indefinite operation, thus ensuring that this instrument has a
long working life.
Applicable Standards
- BS 7843 Guide to acquisition and management of MET precipitation
data recorders
part 1 and 2
