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Rain Gauge Tipping Bucket TR-525S Siphoning Rainfall Sensor
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Description
The Texas Electronics, Inc. TR-525S Siphoning Rainfall Sensor is a remote tipping bucket style rain gauge that measures the amount of liquid precipitation. It utilizes a unique siphoning mechanism that allows for a wide range of accuracy. Incorporating this siphoning system allows the rain gauge to control the "flow rate" of accumulated precipitation. This metering geometry assures higher levels in both accuracy and repeatability during periods of extremely heavy rainfall.
The TR-525S rain gauge is a freestanding receptacle for measuring precipitation. It contains an open top, which allows rainfall to fall into the upper portion, which is called the collector. The 4" deep collector is specially designed to prevent splash out and overflow, two possible causes for loss of accuracy during extremely heavy rainfall events. Collected water is siphoned by a regulated flow into a mechanical device (tipping bucket). The tipping bucket then incrementally measures the rainfall accumulation and causes a momentary closure of a switch. As water is collected, the tipping bucket fills to the point where it tips over. 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.
Features & Benefits
- Unique Siphoning technique allows an extended range of accuracy
- Interfaces to virtually all data acquisition systems
- Knife-edge collector optimizes rainfall catch
- Exceptional splash-out protection to compensate for wind errors
- Easy installation and maintenance
- All aluminum Exterior
- Integral Bubble Level
Installation & Maintenance
Installation consists of attaching the three sensor support legs to a firm platform (such as our MB-525 Mounting Base).
Maintenance consists of routine cleaning of debris from the filter screen, and occasional calibration verification with our FC-525 Field Calibration Kit.
Specifications
| Resolution: | 0.01" English 0.2 mm (optional) |
| Accuracy: | 1.0% up to 12"/hr (305 mm/hr) |
| Siphon starting threshhold: | <0.01" (<0.254 mm) |
| Collector diameter: | 8" (203 mm) with knife-edge |
| Funnel depth: | >7" (178 mm) |
| Splash out protection: | 4" (102 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: | 6 lbs. (2.7 kg) 8 lbs. (3.6 kg) shipping |
| Height: | 15" (381 mm) |
| Cable: | 25', 22 gauge 2 conductor |
| Switch: | Momentary potted reed switch |
| Switch rating: | 30 VDC @ 2 A, 115 VAC @ 1 A |
| Switch Closure Time: | 135 ms |
| Bounce Settling Time: | 0.75 ms |
| Pivot: | Hardened SS Jewel & Pivot |
| Bucket: | UV protected ABS |
| Level: | Integral Bubble Level |
| Warranty: | 3 years |
Ordering Information
| Model # | Description |
| TR-525S | Rain Gauge, 8" collector, Siphon (please specify for metric calibration) |
Optional Parts / Accessories
| HOBO | Event Datalogger and Software |
| MB-525 | Pole Mounting Base |
| FC-525 | Field Calibration Kit |
| BB-525 | Bird Repellant Apparatus |
| HT-525 | Heater, 120 VAC |
| Cable | Additional Cable |