 6021 Series Electrically Heated Rain and Snow Gauge
Electrically Heated Rain and Snow Gauge
For areas where snow or freezing rain may occur, Electrically Heated Rain
and Snow Gauge Models 6021-A and 6021-B are available. Each gauge includes
4 separate heaters. A NiChrome wire heater wraps around the collection funnel
to melt the precipitation. A second NiChrome wire heater warms the internal
components and the gauge base to prevent refreezing of the water inside the
gauge. In addition, a cartridge heater is installed into each of the two gauge
drain tubes so that the measured precipitation passes out of the gauge freely
without freezing on contact with the cold outside air. The funnel and the
base heaters are controlled by thermostats; the drain tube heaters are continuous
duty. Rain gauge models may operate on either 115 VAC or 230 VAC power.
Three Available Models
The 6021-A gauge has an orifice diameter of approximately 8 inches
and a resolution of 0.01 inch.
The 6021-B gauge has an orifice diameter of approximately 8 inches and a resolution of 0.1 mm.
The 6021-D gauge operates from a supply voltage of 230 Vac. It has an orifice diameter of approximately 8 inches and a resolution of 0.1 mm.
All gauge types 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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