OSI - Model APG-815-DS -All Precipitation Gauge

• Measurement of instantaneous precipitation rate; rainfall as light as 0.1 mm/hr. easily measured; no evaporation errors; can handle extremely high rain rates > 500mm/hr.; no overflow or mechanical limits to worry about
• No moving parts; operates 24/7 under harsh field conditions. No antifreeze chemicals
• Dust / dirt on lenses does not affect measurement; ultra-low maintenance
• Wind does not create sampling problems. Slant path rain errors are negligible.
• RS- 232 digital output allows instant/detailed analysis of event
• Functions in all weather; our sensors are operating on every continent year-round (including Antarctica)
• Intelligent sensor; automatic correction and continuous internal monitoring; operates unattended
• Pays for itself in maintenance and replacement costs alone; no on-site monitoring needed; lasts for years
• Flexible mounting, even on moving platforms (buoys / shipboard); nominal 12VDC power

OSi`s sensors have more than 600 million hours of proven field operation in all climates. MTBF (Mean Time Between Failure) for OSi instruments is greater than 80,000 hours. The APG® operates unattended 24 hours a day, 7 days a week. The instrument uses proprietary algorithms that eliminate the need for frequent calibration. Field calibration every two years is typical. The APG® has AGC (Automatic Gain Control) to compensate for signal loss. The sensor also employs a comprehensive self-test that updates once per minute and reports any potential problems in the output message.

• Additional Capability: Reports Present Weather Codes.
• Superior Technology: APG® uses Optical Scintillation which is superior to other methods; measures true rain rate
• Long-term reliability: operates unattended 24 hours/day, 7 days/week
• Low maintenance
• Adaptive Heater Technology (AHT): ideal for solar operation.
• Data access: Low cost cellular modem option
• Self-diagnostics & Testing: Continuously monitors performance and informs user of trouble

• Cellular modem option, consult factory
• Solar Power Optional, consult factory
• PSB-815 AC Power Supply & Junction Box
• QCS-815 QwikCollect Software: Collects, displays, archives data (compatible w/ all Windows systems)
• LDM Limited Distance Modem: for distances> 100 ft. (max = 7 miles).

Performance Specifications

• Rain Dynamic Range1: 0.001 to 500 mm/hr
• Rain Accumulation: 0.001 to 999.999 mm
• Rain Accuracy (Accumulation): 5 %
• Rain Resolution: 0.001 mm
• Output Format: RS-232 Serial I/O, simple polled protocol
• Snow Dynamic Range: 0.03 to 500 mm/hr
• Snow Accumulation: 0.001 to 999.999 mm
• Snow Accuracy (Accumulation): 5 %
• Snow Resolution: 0.001 mm
• NWS Present Weather Codes: Precipitation, Rain, Snow
• WMO Table 4680 Present Weather Codes: Precipitation, Drizzle/Freezing Drizzle, Rain/Freezing Rain, Snow
• Data Update Rate: Once per Minute

Electronic Specifications

• Measurement Technique: Optical Scintillation
• Direct Current (DC) Supply Voltage: 12 V
• Current2: 300 to 400 mA
• Signal Output: RS-232 ASCII
• Transient Protection: All power & signal cables protected

Environmental Specifications

• Temperature: -40 to 50 ºC-40 to 122 ºF
• Humidity: 0 to 100 %
• Precipitation/Dust: NEMA 4 Type Protection
• Physical Specifications
• Head Size: 730 x 102 x 254 mm29 x 4 x 10 in
• Head Weight: 6.6 lb3 kg
• Cable Length:  48 ft15 m

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