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The NOAH II All-Weather Precipitation Gauge

Each of the 12-inch, 20-inch and 30-inch capacity models has 12-inch diameter collection chambers. The base enclosure provides housing for a battery.

Periodic servicing involves manually draining the collection chamber and adding proper amounts of antifreeze and evaporation-suppressant oil.

Catch capacities are dependent on low temperature extremes and required antifreeze to maintain a liquid solution.

Advanced Features of the NOAH II:

Uses proven load cell technology

Advanced digital software filtering reduces errors due to wind, vibration and other noises sources

Environmentally friendly ethanol-glycerin antifreeze converts frozen precipitation to liquid

Low power requirement allows standalone operation from optional solar power system

Measurement unaffected by high precipitation rates

Delivered fully calibrated from the factory

Test interface to gauge electronics


Resolution 0.01 inch

Threshold 0.01 inch

Accuracy +/- 0.01 inch

Temperature Range -30 C to +50 C

Power Requirement +12 VDC (15 ma average drain)

Orifice (diameter) 12 inches

Capacities: 12, 20 and 30 inches

Overall Height (30-inch model) 54 inches

Overall Height (20-inch model) 44 inches

Overall Height (12-inch model) 34 inches


Windscreen - to reduce effects of wind on measurement. The windscreens are made of GE LEXANTM  a space-age material resistant to weather and solar radiation.

Solar Power System - consisting of a 20-watt, 12-volt solar panel, regulator, and a 12-volt, 12-amp battery.

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