Vaisala

RG13

Tipping-bucket rain gauge, with heated RG13H variant

RG13

A field-proven tipping-bucket rain gauge for measuring liquid precipitation in weather networks and unattended sites. A precision septum ring gives an exact 400 cm² aperture, a siphon regulates flow into the bucket for stable calibration, and the RG13H variant adds automatic heating below +4 °C.

Download datasheet (PDF)

Specifications

Technical specifications

Measurement principle
Cazoleta basculante con sifón regulador de caudal; salida por cierre de contacto
Resolution
0,2 mm estándar (0,1 mm o 0,5 mm opcionales)
Accuracy
2 % a 1 l/h
Aperture area
400 cm² (1.000 cm² con unidad expansora)
Operating temperature
RG13: +1 °C a +85 °C; RG13H: -20 °C a +85 °C (calefacción bajo +4 °C)
Output
Cierre de contacto (reed), borne a tornillo; vida 10⁸ conmutaciones

Features

Key features

  • Pivoted tipping-bucket mechanism with automatic discharge and unlimited capacity
  • Constant-flow siphon that simplifies calibration and improves accuracy
  • Aluminum-alloy body and funnel for harsh environments
  • Base with fixing slots, 3 leveling screws, and a built-in spirit level
  • Automatic heating on the RG13H variant for operation below +4 °C
  • Economical, robust, and field-proven in weather networks

Applications

Typical applications

  • Meteorological and hydrological networks
  • Remote sites and unattended stations
  • Measurement verification and redundancy at automatic weather stations
  • Tipping-bucket input for WXT530 transmitters (WXT536)

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