The Texas Electronics, Inc. TR-4 4'' Tipping Bucket Rain Gauge 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.
| Weight | 2.000 lbs |
|---|---|
| Dimensions | 9 × 6 × 6 in |
| Accuracy | 0-1 in. (25 mm) per hour; +/-2% |
| Bounce Setting Time | 0.75 ms |
| Bucket | Black ABS injection molded |
| Cable | 10', 22 Gauge 2 Conductor |
| Collector Diameter | 3.90" (100 mm) with knife edge |
| Splash out Protection | >1.5" (38 mm) |
| Funnel Depth | 3" (76 mm) |
| Height | 6" (152 mm) |
| Humidity Limits | 0 to 100% |
| Operating Temp | 32 to 125°F (0 to 70°C) |
| Pivot | Ground bronze pivots with hardened stainless steel shaft |
| Resolution | 0.01" English |
| Storage Temp | -40 to 160°F (-40 to 85°C) |
| Switch | Momentary potted reed switch |
| Switch Closure Time | 135 ms |
| Switch Rating | 30 VDC @ 2A, 115 VAC @ 1A |
| Weight | 2 lbs. (0.9 kg) 4 lbs. (1.8 kg) |