Related Manuals for FTS SDI-AWP-200
Summary of Contents for FTS SDI-AWP-200
- Page 1 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 3 18 Jul 2018...
- Page 2 Contact Information Canadian Headquarters: 1065 Henry Eng Place Victoria, BC | V9B 6B2 | Canada www.ftsinc.com Toll-free: 1.800.548.4264 Local: 250.478.5561 Technical support portal: http://support.ftsinc.com Email: service@ftsinc.com...
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Page 3: Table Of Contents
Contents GENERAL ....................................1 1.1.1 KEY FEATURES: ................................. 1 PARTS ...................................... 2 MOUNTING HEIGHTS ................................ 3 WIND SHIELD ..................................4 SITE SELECTION ................................... 5 CONCRETE BASE ................................. 5 REQUIRED TOOLS ................................6 MOUNTING ................................... 6 CALIBRATION VERIFICATION............................9 MAINTENANCE ..................................11 2.6.1 EMPTYING THE BUCKET ............................11 2.6.2... -
Page 4: General
GENERAL 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. -
Page 5: Parts
PARTS The following exploded view shows the 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 Base plate with internally sealed electronics housing Instrument Flange Pedestal (stainless steel) -
Page 6: Mounting Heights
MOUNTING HEIGHTS Each model of AWP is mounted on a pedestal. There are two heights of pedestals for each model of AWP so that the resultant height of the orifice will be either 1m or 1.5 m. The pedestal sizes are identified by the resultant height of the AWP orifice not the pedestal height itself. -
Page 7: Wind Shield
WIND SHIELD An optional wind shield can be ordered for the AWP. 1m wind shield 1.5m wind shield Figure 1-3: AWP with Wind Shield ITEM Description AWP-WS-1M Wind Shield, 1m (3.3 ft) AWP-WS-1.5M Wind Shield, 1.5m (4.9 ft) 700-AWP-Man Rev 3 18 Jul 2018 Page 4/18... -
Page 8: Site Selection
INSTALLATION AND MAINTENANCE SITE SELECTION • The installation site should be open but protected from winds. • The distance from the gauge to any obstruction should be at least twice the height of the obstruction. • The orifice should be 1 meter above the surrounding terrain NOTE: If required by local conditions, the orifice may be positioned at a height of 1.5 meters above the surrounding terrain using the 1.5m pedestal... -
Page 9: Required Tools
REQUIRED TOOLS In order to install the AWP, the following tools are required: • Philips #2 screwdriver • M8 or 5/16” open end or combination wrench (in accordance with bolts in concrete base) • 6 x M8 or 5/16” nuts (to match bolts in concrete base) •... - Page 10 5) Remove the packing supports and packing material from the interior of the housing. Remove packing material 6) Lift the bucket from the support plate. 7) Attach the base plate to the stand using the three bolts with a locking washer. 8) Check the horizontal position of the support plate with a level and adjust the position using the lower flange nuts if necessary.
- Page 11 The other uses three transport bolts and with ½” nuts. Unscrew each nut enough to expose the top of the bolt. Support plate Nuts positioned for transport Nuts positioned for use Figure 2-4: Transport restraints - bolts 10) Replace the bucket ensuring it is correctly centred. 11) Replace the housing, aligning the male part of the heat connector with the female connector located on the base plate and the outer slots with the bolt holes on the base.
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Page 12: Calibration Verification
CALIBRATION VERIFICATION Once the AWP is in place, powered, and configured with the Datalogger, you can conduct an optional calibration verification to ensure its operation and accurate conversion of weight to amount of precipitation. 1) Remove the housing and bucket. Empty the bucket and ensure it is dry and clean. 2) Replace the bucket and housing. - Page 13 TABLE 2-1: REFERENCE TABLE FOR VERIFICATION PROCEDURE. RELATIVE ACCURACY 1% AWP-200 AWP-400 Weight Nom. 1.000 0.500 0.990 1. 01 0.495 0.505 1.250 0.625 1.238 1.263 0.619 0.631 1.500 1.250 2.475 02.525 1.238 1.263 4.950 5.000 5. 050 2.475 2.500 2.525 In the example response in (8), we see the PrTotal of 4.987 for an AWP-200 using a 100g weight falls within the verification range.
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Page 14: Maintenance
MAINTENANCE The AWP requires minimal maintenance. Refer to the following table for the recommended maintenance routine: Table 2-2: Recommended maintenance schedule Empty bucket At every site visit or when bucket nears 80% of its full capacity Visual Inspection Annually (minimum); at every site visit Add Antifreeze If operating in freezing conditions 2.6.1 EMPTYING THE BUCKET... -
Page 15: Antifreeze
2.6.3 ANTIFREEZE The collection bucket is very sturdy and will maintain its shape even if its contents freeze. If the AWP will be operating in temperatures below freezing, it is recommended to add 500 ml of environmentally friendly antifreeze to the bucket to prevent the collected precipitation from solidifying. -
Page 16: Notation For Sdi Commands
SDI-12 COMMANDS NOTATION FOR SDI COMMANDS SDI commands are strings of characters sent to the SDI device. The format of the strings is important, and to specify the format of SDI commands different typefaces are used. All commands (and the replies from the device) are represented in a mono-spaced font. -
Page 17: Measurement And Send Data Commands
3.1.2 MEASUREMENT AND SEND DATA COMMANDS Even though the M and D commands are implemented, it is highly recommended to use the R command (section 3.1.3) to get data from the AWP. Command Name Command Response and Explanation Code Start Measurement atttn a = sensor address ttt = the time in seconds until the sensor will have the... -
Page 18: Continuous Measurement
3.1.3 CONTINUOUS MEASUREMENT Because the AWP is able to continuously measure, a start measurement command is not required. The R command can be used to read directly and return the data. The response is formatted like the D command. Command Name Command Response and Explanation Code... -
Page 19: Time Synchronization Command
3.2.2 TIME SYNCHRONIZATION COMMAND This command synchronizes the internal measurements with the data logger’s time. The time base of the AWP measurement is one minute. Therefore, the minimum interval between time synchronization commands must be an integer multiple of this base (60 seconds). Command Name Command Response and Explanation... - Page 20 SPECIFICATIONS AWP 200 AWP 400 MEASUREMENT Orifice area 200 cm 400 cm Capacity 1500 mm 750 mm Accuracy 0.1% Maximum Rain Intensity 120 mm/min Resolution 0.001mm Measuring Element Strain-gauge bridge Air Temperature Measurement Optional, -40 to +70 (± 0.5C) Wind Correction Wind Shield Optional ELECTRICAL &...
- Page 21 DOCUMENT REVISION HISTORY Revision Date Description 04 Apr 2017 Original Added information on restraining bolts (Section 2.4) and 18 Dec 2018 preparation for transportation (Section 2.6.4) 18 Jul 2019 Corrected formatting in Table 2-1. 700-AWP-Man Rev 3 18 Jul 2018 Page 18/18...
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