TR-525USW Rain Gauge
TR-525USW Rain Gauge

: $597.00
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Product Code: TR-525USW


The TR-525USW Rainfall Sensor is a remote tipping bucket style rain gauge that measures the amount of liquid precipitation. This scientific rain gauge and sensor is specifically designed to meet the National Weather Service's requirements for rainfall measurement

The TR-525USW tipping 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. Collected water is funneled to a mechanical device (tipping bucket), which 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

  • Meets National Weather Service requirements for 8" collector
  • 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
  • Over 30 years in production
  • Lightweight spun Aluminum Exterior
  • Anodized aluminum collector for superior weather resistance
  • Integral Bubble Level

Installation & Maintenance

Installation of this tipping rain gauge consists of attaching the three sensor support legs to a firm platform (such as our MB-525 Mounting Base). Pole mounting on the mast of a weather station is available by securing to the included side bracket.

The sensor is dynamically calibrated at the factory and due to the nature of its operation should not require field calibration. For this scientific rain gauge, field maintenance should include occasional cleaning of the collector screen and inspection of the internal mechanism to make sure it is free from insects and debris. In some applications, users may need to occasionally verify and document sensor accuracy with our FC-525 Field Calibration Kit.


Resolution:0.01" English
Accuracy:1.0% up to 2"/hr (50 mm/hr)
Collector diameter:8.00" (203 mm) with knife-edge
Funnel depth:6.4" (163 mm)
Splash out protection:>2" (50 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:2.5 lbs. (1.2 kg)
6 lbs. (2.7 kg) shipping
Height:11" (280 mm)
>2" (50 mm) splash out protection
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

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 May 11, 2021
Reviewer: JARRETT SEBASTIAN from Gulf Breeze, FL United States  

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