Universal Rain Gauge
The Universal recording & transmitting precipitation gauge converts the weight of collected precipitation into the equivalent depth of accumulated water in conventional units of inches or millimeters.
- Recording and Transmitting
- Built-in Recorder
- Rugged, All Weather Design
- High Accuracy
- Overflow Protection
- Corrosion Resistant Construction
- Unattended Recording up to 35 Days
- Potentiometric Output for Data Logging or Remote Recording
An 8-inch (20.3cm) diameter, knife-edge orifice collects all forms of precipitation. Rain travels through a funnel into the galvanized weighing bucket. The funnel is removed during the winter season to collect snow. When sub-freezing temperatures are expected, anti-freeze is added to the bucket.
A dual traverse system is used to record the accumulated precipitation on a rotating chart. Half of the gauge capacity is recorded by the upward traverse of the pen, which is dampened by a dash pot, and the other half is recorded by the downward traverse. This dual traverse system permits extended gauge capacity without sacrificing chart resolution. Gauge capacity of 12 inches (300 mm) is standard, but other gauge capacities also available.
Potentiometric output is available for the purpose of transmitting data. A precision gear train produces a resistance change proportional to the amount of rainfall received.