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High accuracy
No external power required
Self-emptying tipping-bucket design
Forty foot (12 meter) cable
User-configurable for 0.01" or 0.2mm rainfall increments
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 0.01" or 0.2 mm (user selectable) the bucket tips, which causes a pulse output and moves the second bucket into position. Water exits the sensor through screened drains in the sensor’s base. The sensor’s output connects directly to one pulse input of an XR5-SE Data Logger.
Construction
The RS-100 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 leveling trough simplifies installation. When properly mounted, the RS-100 can withstand winds of up to 140 MPH (224 kph).
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RS-100 Specifications |
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| Sensor | |
| Type | Tipping bucket activates magnetic reed switch |
| Resolution (rainfall per pulse) | 0.01 inches or 0.2 mm (user configurable) |
| Accuracy | ±4%, ±1 rainfall count between 0.01" and 2.00" per hour (0.2 mm and 50.0 mm per hour); ±5%, ±1 rainfall count between 2.00" and 4.00" per hour (50.0 mm and 100.0 mm per hour) |
| Attached Cable | |
| Length | 40FT (12 meter) |
| Type | 2-conductor, 26 AWG, unshielded |
| Termination | Stripped and tinned leads |
| Maximum cable length (if user extended) | 1000 FT (See "Extending RS-100's cable" below) |
| Physical | |
| Housing material | UV-resistant ABS plastic |
| Collection area | 33.2 in2 (214 cm2) |
| Overall Dimensions |
8.75" diameter x 9.5" high (16.5 cm diameter x 24 cm high) |
| Weight | 2 lbs. 3 oz. (1 kg) |
| Pulse Output | |
| Minimum pulse width | 40ms |
| Pulse origin | Normally open contact closure (reed switch) |
Extending the RS-100'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 1000FT (30 meters).
IMPORTANT! In areas of lightning activity, if the rainfall sensor’s cable is more than 40FT in length, a Lightning Arrestor should be installed on the sensor’s cable to prevent damage to the XR5 from lightning induced surges. Contact Pace Scientific for details.
RS-100 Installation Guide [PDF File, 1.2Mbyte, posted September 15, 2008]
Tel: (704) 799-0688 / Fax: (704) 799-0177 / e-mail: sales@pace-sci.com
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