52202-L Electrically Heated Rain and Snow Gage
Measure Rain, Snow, and Other Frozen Precipitation
Thermostat-controlled gage
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The 52202, manufactured by R. M. Young, is an electrically heated tipping bucket rain gage that measures rain, snow, and other frozen precipitation. Its catchment area of 200 cm2 and measurement resolution of 0.1 mm meet the recommendations of the WMO. This heated rain gage is compatible with all Campbell Scientific dataloggers, and it is used in environmental monitoring applications.

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Benefits and Features

  • High precision—tips at 0.1-mm increments
  • Heating element melts snow and ice for year-round measurements
  • Compatible with many Campbell Scientific data loggers


Detailed Description

The 52202 funnels precipitation into a bucket mechanism that tips when filled to the calibrated level. Each tip is marked by a magnetic reed switch closure that is recorded by a Campbell Scientific datalogger pulse count channel.

The 52202 has an internal heater that melts snow or other frozen precipitation. This heater is thermostat controlled and requires a reliable source of 24 Vac power. A wall transformer is shipped with the 52202 that plugs into a wall socket to provide the required 24 Vac power.


Sensor Type Tipping bucket with magnetic reed switch (normally open)
Measurement Uncertainty
  • 2% for up to 25 mm/h (1 in./h)
  • 3% for up to 50 mm/h (2 in./h)
Rainfall per Tip 0.1 mm (0.004 in.)
Operating Temperature Range -20° to +50°C (heated)
Humidity Range 0 to 100%
Power 18 W @ 24 Vac (for heater only)
Heater Thermostat Set Point 10°C ±3°C
Contact Rating 24 Vac/dc (400 mA maximum)
Compliance with Standards
  • 2011/65/EU RoHS Directive
  • 2015/863/EU RoHS Phthalates Amendment
Mounting Pipe 30.5 cm (12 in.) length; 1 inch IPS, aluminum, unthreaded
Catchment Area 200 cm2 (31 in.2)
Orifice Diameter 16 cm (6.3 in.)
Diameter 18.5 cm (7.3 in.)
Height 30 cm (11.8 in.)
Power Plug Weight 0.43 kg (0.95 lb)
Weight 1.16 kg (2.55 lb)


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


Product Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information


The 52202 is shipped with a mounting pipe. The rain gage clamps onto this pipe, which is then fastened to a crossarm using the CM220 Right-Angle Mounting Kit, or mounted onto the top of a tripod using the CM216 Sensor Mounting Kit.

Wind Screen

Campbell Scientific offers the 260-953 Wind Screen to help minimize the affect of wind on the rain measurements. This wind screen consists of 32 leaves that hang freely and swing as the wind moves past them.