CSC Product Information

Product Information - TB4

Hydrological Services Tipping Bucket Rain Gauge (0.2 mm)

Model	Cable Length
TB4	25 Ft
TB4-L	Custom

Brochure

Manual

Ask about our armoured cable for rain gauges

Features

Tips at 0.2 mm increments
Siphoning mechanism minimizes typical rain bucket errors
Orifice diameter is 200 mm (7.9 in)
Accuracy is ±3% at 25 - 500 mm/hr (1 in to 19.7 in/hr)
Resolution is 0.2 mm
Measurement range 0 to 700 mm/hr
CM240 Mounting/Leveling Base recommended
Manufactured by Hydrological Services Ltd.

General Description

The TB4 rain gauge is manufactured by Hydrological Services Pty. Ltd. Rain funnels into a tipping bucket mechanism that tips when 0.2 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 gauge 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.

The major difference between the TB4 and CS700 is their base. The TB4 has a UV stabilized plastic base whereas the CS700 has a powder-coated aluminum base.

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