Campbell-scientific CSAT3 3-D Sonic Anemometer Manual do Utilizador

INSTRUCTION MANUAL CSAT3 Three Dimensional Sonic Anemometer Revision: 9/14 Copyright © 1998- 2014 Campbell Scientific, Inc

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CSAT3 Three Dimensional Sonic Anemometer 1. General The CSAT3 is an ultrasonic anemometer for measuring wind speed in three dimensions. It uses thr

CSAT3 Three Dimensional Sonic Anemometer CSAT3 can be configured to make a single measurement per trigger or multiple measurements that are centered a

CSAT3 Three Dimensional Sonic Anemometer REPORTING RANGE: SDM and RS-232 digital Outputs: Full scale wind: ±65.535 m s–1 autoranging between four ran

CSAT3 Three Dimensional Sonic Anemometer 2.4 Power Requirements VOLTAGE SUPPLY: 10 to 16 Vdc POWER: 2.4 W @ 60 Hz measurement frequency 1.2 W @ 20

CSAT3 Three Dimensional Sonic Anemometer 3.2 SDM Address Each CSAT3 on the SDM bus must have a unique address. A hex thumb switch within the electro

CSAT3 Three Dimensional Sonic Anemometer 4.2 Mounting The current mounting configuration for the CSAT3 includes a CM250 Leveling Mount, which should

CSAT3 Three Dimensional Sonic Anemometer FIGURE 4-2. CSAT3 coordinate system and captive mounting hardware (s/n 0631 to current) FIGURE 4-3. CSAT3

CSAT3 Three Dimensional Sonic Anemometer FIGURE 4-4. CSAT3 coordinate system and original noncaptive mounting hardware (s/n 0107 to 0630) 4.3 Level

CSAT3 Three Dimensional Sonic Anemometer The CSAT3 electronics box contains unique calibration information for its respective sensor head. Do not mis

CSAT3 Three Dimensional Sonic Anemometer TABLE 5-4. CSAT3 SDM Output to a 21X Datalogger Channel Description Color Pin 1H SDM Data Green D C1 10 K re

CSAT3 Three Dimensional Sonic Anemometer TABLE 5-8. FW05/FWC-L35 Fine Wire Thermocouple Description Color Signal High Purple Signal Low Red 6. CSAT

CSAT3 Three Dimensional Sonic Anemometer TABLE 6-2. SDM Compatible Dataloggers Datalogger Model Datalogger PROMs or Operating System (OS) Requires CS

CSAT3 Three Dimensional Sonic Anemometer 6.2 RS-232 Output The Windows PC support software (CSAT32.EXE) can be used to graph the CSAT3 data in real t

CSAT3 Three Dimensional Sonic Anemometer Unlike CSAT3s running embedded code version 3, embedded code version 4 does not use a library of calibration

CSAT3 Three Dimensional Sonic Anemometer After power-up or loss of signal, the CSAT3 enters a mode where it tests the forward and return paths for eac

CSAT3 Three Dimensional Sonic Anemometer 8. CSAT3 Trigger The CSAT3 takes a measurement of wind speed and the speed of sound when triggered from one

CSAT3 Three Dimensional Sonic Anemometer FIGURE 8-1. Typical average CSAT3 current drain at +12 VDC FIGURE 8-2. CSAT3 pipeline delay 8.1 Sampling

CSAT3 Three Dimensional Sonic Anemometer 8.1.1 Single-Measurement Mode In the single-measurement mode, the anemometer makes one measurement per trigg

CSAT3 Three Dimensional Sonic Anemometer 10. Datalogger Programming using SDM The CRBasic CSAT3 () and EDLOG SDM-CSAT3 (P107) instructions are Input/

Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service

CSAT3 Three Dimensional Sonic Anemometer SDMAddress/SDM Address: The unique SDM Address of the CSAT3 connected to the datalogger. In CRBasic datalog

CSAT3 Three Dimensional Sonic Anemometer Command/Option 90, 91, 98, or 99 must not be used to collect data from a CSAT3 running a cold shifted calibra

CSAT3 Three Dimensional Sonic Anemometer Ux Input Location: The Input Location to store the first of five data values to an EDLOG datalogger. The CS

CSAT3 Three Dimensional Sonic Anemometer data condition also occurs when the datalogger’s execution frequency (inverse of the execution interval) is m

CSAT3 Three Dimensional Sonic Anemometer TABLE 10-7. Wiring for Program Example 1 Description Color CR3000 SDM Data Green SDM-C1 SDM Clock White

CSAT3 Three Dimensional Sonic Anemometer ' ' ' (N) ' {-y} '

CSAT3 Three Dimensional Sonic Anemometer 'Wind directions and speed. Dim wnd_out(8) 'Alias wnd_out(1) = wnd_spd - in compass coordinate syst

CSAT3 Three Dimensional Sonic Anemometer Totalize (1,n,IEEE4,NOT (del_T_f) OR NOT (disable_flag_on(2))) FieldNames ("del_T_f_Tot") Tot

CSAT3 Three Dimensional Sonic Anemometer 'Break up the four CSAT3 warning flags into four separate bits. diag_csat_work = diag_csat d

CSAT3 Three Dimensional Sonic Anemometer TABLE 10-8. Wiring for Program Example 2 Description Color CR3000 SDM Data Green SDM-C1 SDM Clock White

Assistance Products may not be returned without prior authorization. The following contact information is for US and international customers residing

CSAT3 Three Dimensional Sonic Anemometer ;If the CSAT3 head is pointing West of North (above figure), ;theta is negative. If the CSAT3 head is pointin

CSAT3 Three Dimensional Sonic Anemometer ;Disable Intermediate Processing if any of the diagnostic flags are ;on,vi.e. diag >= 4096 or any of the s

CSAT3 Three Dimensional Sonic Anemometer 17: Real Time (P77) 1: 110 Day,Hour/Minute (midnight = 0000) 18: Resolution (P78) 1: 1 High Re

CSAT3 Three Dimensional Sonic Anemometer ;Load the angle between North and the CSAT3 head. ;The station operator must enter the angle theta. ; 4: Z=F

CSAT3 Three Dimensional Sonic Anemometer ;Configure CSAT3 with 10 Hz parameters. ; 12: SDM-CSAT3 (P107) 1: 1 Reps 2: 3 SDM Address 3:

CSAT3 Three Dimensional Sonic Anemometer 24: Z=X (P31) 1: 5 X Loc [ diag ] 2: 30 Z Loc [ diag_work ] 25: If (X<=>F) (P89)

CSAT3 Three Dimensional Sonic Anemometer 36: End (P95) 37: End (P95) ;Process CSAT3 Output data. ; 38: Beginning of Subroutine (P85) 1: 3 S

CSAT3 Three Dimensional Sonic Anemometer 46: End (P95) 47: End (P95) End Program -Input Locations- 1 Ux 2 Uy 3 Uz 4 Ts 5 diag 6 _________ 7 _____

CSAT3 Three Dimensional Sonic Anemometer Lightly dab the face of the transducers to remove water droplets. Applying excessive force on the face of the

CSAT3 Three Dimensional Sonic Anemometer FIGURE 11-2. P/N 28902 CSAT3 Sonic Wick Spares Kit contents 11.2 Calibration The CSAT3 is calibrated over

Precautions DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND TRIPODS, TOWERS, AND ANY ATTACHMENTS TO

CSAT3 Three Dimensional Sonic Anemometer The standard datalogger instruction reports either the speed of sound (c), option 90 or 99, or the sonic temp

CSAT3 Three Dimensional Sonic Anemometer FIGURE 11-4. Recommended settings for the wind vertical axis FIGURE 11-5. Recommended settings for the wi

CSAT3 Three Dimensional Sonic Anemometer FIGURE 11-6. Wind data from CSAT3 s/n 315; wind offsets within specifications at 19 °C 12. Select Backdoor

CSAT3 Three Dimensional Sonic Anemometer After receiving the “??” command, the CSAT3 will respond with text similar to that below for CSAT3s running e

CSAT3 Three Dimensional Sonic Anemometer deasserted, e.g. RS-232 communicates have terminated. The baud rate cannot be changed if RI=1 (always power

Appendix A. CSAT3 Orientation A.1 Determining True North and Sensor Orientation The orientation of the CSAT3 negative x-axis is found by reading a

Appendix A. CSAT3 Orientation Declination angles are always subtracted from the compass reading to find True North. A declination angle East of True

Appendix A. CSAT3 Orientation A.2 Online Magnetic Declination Calculator The magnetic declination calculator web calculator published by NOAA’s Geop

Appendix A. CSAT3 Orientation A-4

Appendix B. Serial Communications with the CSAT3 B.1 CSAT3 RS-232 Commands The CSAT3 powers up its RS-232 drivers when it detects that the RTS (req

Appendix B. Serial Communications with the CSAT3 TABLE B-1. RS-232 Command Codes Command Trigger before Command Description Trigger after Command &

Appendix B. Serial Communications with the CSAT3 Nassi-Shneiderman diagrams are given in FIGURE B-1and FIGURE B-2 for collecting data using a PC and

Appendix B. Serial Communications with the CSAT3 TABLE B-2. RS-232 Output Word 0 Word 1 Word 2 Word 3 Word 4 b15 - b0 b15 - b0 b15 - b0 b15 - b0 b15

Appendix B. Serial Communications with the CSAT3 TABLE B-6. Converting Speed of Sound from Word 3 Conversion Output Resolution (mm s–1) (°C @ 25 °C

Appendix B. Serial Communications with the CSAT3 TABLE B-9. RS-232 Status, Response to the S or P Command Byte Description Value 0 Trigger Source 0

Appendix C. CSAT3 Measurement Theory C.1 Theory of Operation C.1.1 Wind Speed Each axis of the CSAT3 pulses two ultrasonic signals in opposite dir

Appendix C. CSAT3 Measurement Theory The speed of sound in moist air is a function of temperature and humidity and is given by: C= P = RT= 

Appendix C. CSAT3 Measurement Theory Liu, H., Peters, G., and Foken, T.: 2001, “New Equations for Sonic Temperature Variance and Buoyancy Heat Flux

Appendix C. CSAT3 Measurement Theory C-4

Appendix D. SDM Communications and Long Signal Cables D.1 Brief Description of SDM Clock Rates The fastest rate that a datalogger and SDM sensors c

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Appendix D. SDM Communications and Long Signal Cables D.2 CR3000 Example Connect all the SDM devices to the datalogger with the cable in question.

Appendix D. SDM Communications and Long Signal Cables Take the following case, a 575 foot SDM signal and power cable is used to connect a CR23X datal

Appendix D. SDM Communications and Long Signal Cables D-4

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbe

Table of Contents 10.1 CRBasic CSAT3 () Instruction ..... 19 10.2 EDLOG SDM-CSAT3 (P107) Instru

Table of Contents 8-2. CSAT3 pipeline delay .................. 17 11-1. Proper location of the