Rainfall Sensor

RS-110 Rainfall Sensor - Pace Scientific

RS110 Rainfall Sensor

  • High accuracy rain gage

  • No external power required

  • Self-emptying tipping-bucket design

  • Forty foot (12 meter) cable

  • Easily mounts to pole, post or flat surface

  • Reads rainfall in inches or millimeters

Operation

Rain enters the top of the sensor and passes through a debris-filtering screen.  It then collects in one of two tipping buckets.  When accumulated rainfall equals 0.2 mm (0.00787 inches) the bucket tips, a pulse is output and the second bucket moves into position.  Water exits the sensor through screened drains in the sensor’s base.  The sensor’s signal cable connects directly to a pulse input on the XR5-SE Data Logger, or to a Pulse Module connected to the XR440 Data Logger.

Construction

The RS-110 is designed for years of accurate, trouble-free service. Body and base are constructed of tough, UV resistant plastic; the tipping buckets pivot on bearings, minimizing friction and wear.  Stainless steel adjustment screws under each tipping bucket allow fine-tuning the sensor’s calibration.  A built-in bubble level simplifies installation.

 

RS-110 Specifications

Sensor
Type Tipping bucket activates magnetic reed switch
Resolution (rainfall per pulse) 0.2 mm (0.00787 inches)
Accuracy

For rates up to 2"/hr (50.0 mm/hr): ±4% or ±0.008" (0.2 mm) whichever is greater.

For rates from 2"/hr (50.0 mm/hr) to 4"/hr (100.0 mm/hr): ±5%.

Attached Cable
Length 40 ft (12 meter)
Type 2-conductor, 26 AWG, unshielded
Termination Stripped and tinned leads
Maximum cable length (if user extended) 500 ft (See "Extending RS-110's cable" below)
Physical
Housing material UV-resistant ABS plastic
Collection area 33.2 square inches (214 square cm)
Overall Dimensions 9.25" wide x 10.25" high x 11" deep (23.5 x 26 x 28 cm)
Weight

3 lbs. 3 oz. (1.45 kg)

(includes hardware and cable)

Pulse Output
Minimum pulse width 30 ms
Pulse origin Normally open contact closure (reed switch)

Extending the RS-110's cable

If the cable supplied with the Rainfall Sensor is not long enough for your application, it may be extended with 22 gage, two conductor copper cable.  Maximum length is 500 ft (150 meters).

RS-110 Installation Guide [PDF File, posted September 2015]

Part No: RS-110    Domestic (USA) Price: $100.


XR440 Data Logger

pdf icon  XR440 Catalog

XR5-SE Data Logger

pdf icon  XR5-SE User's Guide

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