TR-4, Rain Gauge

The Texas Electronics, Inc. TR-4 low-cost rainfall sensor is a remote tipping bucket style rain gauge that measures liquid precipitation.

The Rain Gauge is a freestanding receptacle for measuring precipitation. Through an opening at the top of the device, rain is collected and then funneled to a mechanical device, called a tipping bucket. As water is collected, the tipping bucket fills to the point that it tips over, causing a momentary closure of a switch to incrementally measure rainfall accumulation. This action empties the bucket in preparation for additional measurement. Water discharged by the tipping bucket passes out of the rain gauge with no need for emptying.

The TR-4 was designed to meet the need for a rugged and reliable rain gauge tipping bucket without the high accuracy of a research grade sensor, or the associated cost.

Availability: In stock

Bulk Discounts Available
  • Buy 5 for $279.30 each and save 5%
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TR-4, Rain Gauge

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Additional Information

Resolution 0.01" English
Accuracy 0-1 in. (25 mm) per hour; +/-2%
Collector Diameter 3.90" (100 mm) with knife edge
Funnel Depth 3" (76 mm)
Splash out Protection >1.5" (38 mm)
Operating Temp 32 to 125°F (0 to 50°C)
Storage Temp -40 to 160°F (-40 to 70°C)
Humidity Limits 0 to 100%
Weight 2 lbs. (0.9 kg) 4 lbs. (1.8 kg)
Height 6" (152 mm)
Cable 50', 22 Gauge 2 Conductor
Switch Momentary potted reed switch
Switch Rating 30 VDC @ 2A, 115 VAC @ 1A
Switch Closure Time 135 ms
Bounce Setting Time 0.75 ms
Pivot Ground bronze pivots with hardened stainless steel shaft
Bucket Black ABS injection molded
Level Integral Bubble Level
Warranty 3 years

Product File Documentation