FTS SDI-AWP-200 User manual
EXTREME ENVIRONMENTS. EXTREMELY RELIABLE.
SDI-AWP-200/SDI-AWP-400
All Weather Precipitation Gauges
User’s Manual
1.800.548.4264 | www.ftsinc.com
700-AWP-Man Rev 318 Jul 2018
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Contents
1.1 GENERAL................................................................................................................................................................................1
1.1.1 KEY FEATURES: .........................................................................................................................................................1
1.2 PARTS......................................................................................................................................................................................2
1.3 MOUNTING HEIGHTS ........................................................................................................................................................3
1.4 WIND SHIELD .......................................................................................................................................................................4
2.1 SITE SELECTION...................................................................................................................................................................5
2.2 CONCRETE BASE .................................................................................................................................................................5
2.3 REQUIRED TOOLS...............................................................................................................................................................6
2.4 MOUNTING ...........................................................................................................................................................................6
2.5 CALIBRATION VERIFICATION..........................................................................................................................................9
2.6 MAINTENANCE..................................................................................................................................................................11
2.6.1 EMPTYING THE BUCKET......................................................................................................................................11
2.6.2 VISUAL INSPECTION .............................................................................................................................................11
2.6.3 ANTIFREEZE .............................................................................................................................................................12
2.7 TRANSPORTING THE AWP.............................................................................................................................................12
3.1 NOTATION FOR SDI COMMANDS ..............................................................................................................................13
3.1.1 BASIC COMMANDS...............................................................................................................................................13
3.1.2 MEASUREMENT AND SEND DATA COMMANDS .......................................................................................14
3.1.3 CONTINUOUS MEASUREMENT.........................................................................................................................15
3.2 X COMMANDS ...................................................................................................................................................................15
3.2.1 RAIN COUNTER RESET .........................................................................................................................................15
3.2.2 TIME SYNCHRONIZATION COMMAND..........................................................................................................16
Page 1/18
700-AWP-Man Rev 3 18 Jul 2018
GENERAL
1.1 GENERAL
The FTS All Weather Precipitation (AWP) Gauge is an SDI-12 sensor which measures all types of
precipitation within a wide temperature range. It is designed to withstand harsh wind and snow
conditions without sacrificing sensitivity and accuracy. It boasts a combination of simple mechanical
construction and sophisticated firmware, guaranteeing superior performance.
The AWP Gauge is available in two models which come with a mounting template for the installation
of the pedestal and optional wind shield:
SDI-AWP-200 SDI-AWP-400
Orifice area
200 cm2 400 cm2
Capacity
1500 mm 750 mm
The factory default address is 1. If your AWP will be used with a pre-set configuration, ensure it is set
to the address used in the configuration file.
CAUTION! When the bucket is at capacity it weighs 30 kg (66 lbs).
1.1.1 KEY FEATURES:
•Measurements of solid and liquid precipitation with one-minute rain intensity, total sum of
precipitation and rain duration
•Elimination of wind vibration, particles, false weight changes, evaporation and temperature
fluctuation
•Easy to maintain
•Evaluation and accuracy check “in situ”
•Bucket capacity alert function
•Orifice heating optional
•Output: SDI-12
•Wind Shield and Pedestal (in 1m or 1.5m {3.3 ft or 4.9 ft} sizes) are available as well
700-AWP-Man Rev 3 18 Jul 2018 Page 2/18
1.2 PARTS
The following exploded view shows the major components of an AWP.
Figure 1-1: Major components of an AWP
Orifice – collecting ring with heating
Housing (stainless steel or laminate)
Bucket (UV stabilized plastic)
Support plate (aluminum-base alloy)
Strain gauge bridge
Instrument Flange
Base Flange
Pedestal (stainless steel)
Base plate with internally sealed electronics
housing
This manual suits for next models
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