The TB4 rain gage is manufactured by Hydrological Services Pty. Ltd. Rain funnels into a tipping bucket mechanism that tips when 0.01 inches (0.25 mm) of rain has been collected. Each tip is marked by a dual reed switch closure that is recorded by a Campbell Scientific datalogger pulse count channel. After measurement, the water drains through two orifices (accepts 12 mm tubing) in the base, allowing the measured water to be collected in a separate container.

The rain gage includes a siphoning mechanism that allows the rain to flow at a steady rate to the tipping bucket mechanism regardless of rainfall intensity. This reduces typical rain bucket errors and produces accurate measurements, enabling the TB4 to record intense rainfall events.

Features

Tips at 0.01" increments
Siphoning mechanism included that minimizes typical rain bucket errors
Accuracy of ±2 percent at 1" to 19.7"/hr
Resolution of 0.01"
CM240 Mounting/Leveling Base recommended
Manufactured by Hydrological Services Ltd.

Specifications

Sensor Type: Tipping bucket with siphon
Accuracy: better than ±2% @ 19.7”/hr (500 mm/hr)
Resolution: 0.01" (0.254 mm)
Measurement Range: 0 to 19.7"/hr (0 to 500 mm/hr)
Humidity: 0 to 100%

Producing Area:USA