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NovaLynx Corporation
Model 110-WS-16RC Tipping Bucket Rain Gauge
Instruction Manual
1.0 INTRODUCTION
The 110-WS-16RC Rain Gauge is a tipping bucket rain gauge designed to meet the
guidelines of the World Meteorological Organization. Rain enters the collector cone,
passes through a debris-filtering screen, and collects in one chamber of the tipping
bucket. The bucket tips when it has collected an amount of water equal to 0.01"
(0.254 mm) of rainfall. As the bucket tips, it causes a switch closure and brings the
second tipping bucket chamber into position. The rain water drains out through the
screened drains in the base of the collector.
The body and base of the collector are constructed of tough, UV resistant plastic. The
tipping bucket pivots on bearings that minimize friction and wear. Stainless steel
adjustment screws under each chamber of the tipping bucket allow you to fine-tune the
calibration. Mounting holes are pre-drilled in the base and a built-in leveling trough aids
in installation.
2.0 TESTING THE RAIN GAUGE
Before installing the rain gauge:
1. Turn the rain gauge upside down and remove the
cone from the base by rotating the base until the
latches on the cone line up with the latch opening in
the base then lifting the base away from the cone.
2. Remove the foam or rubber band which holds the
bucket in place during shipping.
3. Attach the two leads of the rain gauge cable to the
appropriate connectors on the data acquisition module:
red wire to P3, black wire to GND.
4. While watching the WS-16 observation display, tip
the bucket until it drops to the opposite side. If the
rainfall amount displayed on the console increases by
the expected increment (usually 0.01" or 0.254 mm) each time you tip the bucket, your
rain gauge is working properly.
