TB4-LC Rain Gage for CS110 or MetData1

Overview

The TB4-LC, manufactured by Hydrological Services, has an 8" orifice and measures rainfall in 0.01" increments. It contains an internal siphon mechanism that causes rain to flow at a steady rate to the tipping bucket mechanism (regardless of intensity).


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Benefits and Features

  • Accuracy is ±3 percent at high precipitation rates of 500 mm/hr

The "-LC" version of this product terminates in a connector (instead of pigtails) for use with a CS110 Electric Field Meter or MetData1 Weather Station.  The length of the cable is specified at the time of order.


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Detailed Description

The TB4 funnels precipitation into a bucket mechanism that tips when filled to its calibrated level. Each tip is marked by a dual reed switch closure that is recorded by a data logger 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 TB4 contains an internal siphon mechanism that causes rain to flow at a steady rate to the tipping bucket mechanism (regardless of intensity). The siphon allows the sensor to make accurate measurements over a range of 0 to 700 mm per hour.

 


Specifications

Sensor Type Tipping bucket with siphon
Accuracy
  • ±2% @ < 250 mm/hr (9.8 in./hr)
  • ±3% @ 250 to 500 mm/hr (9.8 to 19.7 in./hr)
Resolution 0.01 in. (0.254 mm)
Measurement Range 0 to 700 mm/hr (0 to 27.6 in./hr)
Temperature Range 0° to 70°C
Humidity 0 to 100%
Cable Two-conductor shielded
Orifice Diameter 20 cm (7.9 in.)
Drain Tube Size Both filters accept 12 mm (0.47 in.) inner diameter tubing.
Height 33 cm (13 in.)
Weight 2 kg (4.4 lb) with 7.62-m (25-ft) cable

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