 6011 Series Tipping Bucket Rain Gauge
Tipping Bucket Rain Gauge
Tipping Bucket Rain Gauges, 6011-A and 6011-B, are standard, precision
weather instruments for measuring rainfall volume and/or rate. Rain enters the gauge
through a large funnel, the rim of which is protected by a metal ring to prevent
distortion. Collected water passes through a debris-filtering screen and is
funneled into one of two tipping buckets inside the gauge. The bucket tips
when a given amount of water has been collected; the amount is determined
by gauge calibration. As the bucket tips, it causes a 0.1-second switch closure.
The tip also brings a second bucket into position under the funnel, ready
to fill and repeat the cycle. After the rain water is measured, it drains
out through tubes in the base of the gauge. The drain holes are covered by
screens to prevent insect entry.
Two Available Models
The 6011-A gauge has an orifice diameter of approximately 8 inches
and a resolution of 0.01 inch.
The 6011-B gauge has an orifice diameter of approximately 8 inches and a resolution of 0.1 mm.
Both gauges utilize a mercury-wetted reed switch. The mercury wetting
prevents the arcing that is common with reed switches and provides a better
electrical contact.
Features
All Weather Inc. rain gauges are designed for many years of accurate, trouble-free
operation. They utilize all metal construction, including aluminum, nickel-plated
brass, and stainless steel. The built-in level and predrilled feet aid in
proper installation. Measurement accuracy is +/-0.5% at a precipitation rate
of 0.5 inch per hour.
Wind Screen
This Alter-Type Wind Screen minimizes the formation of strong updrafts which
can distort the trajectories of precipitation particles falling toward a gauge.
The screen also generates turbulent air motions over the gauge orifice to
break up streamlines and thus improve the catch. Use of a wind screen is recommended
with all precipitation gauges located in windy areas. The screen consists
of 32 free-swinging galvanized metal leaves, evenly spaced around a 4-foot
diameter ring. Each leaf is fabricated from 22-gauge sheet metal, 16"
long, 3" wide at the top and 2" wide at the bottom. One of the quadrants
is hinged and swings out to permit easy access to the gauge. Two lengths of
legs (two feet and three feet) are available due to variations in gauge height.
A mounting kit is available.
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