RD01 Rain Detector
Detects the Start and End of a Rain Event
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported

Overview

The RD01 Rain Detector can be used to automatically monitor the start and end of either rain or snowfall. Read More

Benefits and Features

  • Integrated wind shield that protects capacitive element—no false indications
  • Integrated heater—able to detect liquid or solid precipitation and prevents false signals caused by fog or dew
  • Supplied with integrated mounting bracket for simple installation to horizontal or vertical poles
  • Bird spikes to deter perching and fouling of the sensing element

Technical Description

The RD01 Rain Detector can be used to automatically monitor the start and end of either rain or snowfall. An integral heater helps to keep the sensor element free of frost and condensation and dries the element when the rain has stopped. The heater is also used to melt snow so that snowfall events can also be recorded.

The external casing protects the element from wind, reducing the risk of damage, but also improving the sensors sensitivity for light rain. Whilst primarily used in road weather applications, when used with a data logger, the sensor can also be used to automatically control windows, shutters, or covers during rain events.

Images

Compatibility

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Dataloggers

Product Compatible Note
CR1000 (retired)
CR3000
CR5000 (retired)
CR6
CR800 (retired)
CR850 (retired)
CR9000X (retired)

Specifications

Sensor Type Capacitative with integrated heater
Sensor Sensing Area 6.6 cm2
Angle of Element 30°
Sensitivity Min. wet area 0.05 cm2 ON delay/Trip delay (OFF>>ON): <0.1 ms="" off="" delay="" shut-off="" on="">>OFF): < 5 min
Supply Voltage 12 Vdc ± 10%
Current Consumption
  • 130 mA (typical)
  • 230 mA (maximum
  • 10 mA (with heater disabled)
Sensor Power Consumption 0.1 to 2.3 W
Outputs Rain ON/OFF: Open by default, closed in case of rain
Maximum Voltage 15 V maximum, current 50 mA
Analogue Output 0 to 1 V (0 V = rain; 1 V = dry sensor)
Frequency Output 1,500 to 6,000 Hz (wet to dry)
Non-Calibrated Operating Temperature -15° to +55°C
Storage Temperature -40° to +65°C
Cable Length 5 m
Diameter 107 mm
Height 70 mm
Weight 450 g

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