METEOROLOGICAL INSTRUMENTS INSTRUCTIONS ULTRASONIC ANEMOMETER (HEATED) MODEL 85004 R.M. YOUNG COMPANY 2801 AERO PARK DRIVE, TRAVERSE CITY, MICHIGAN 49686, USA TEL: (231) 946-3980 FAX: (231) 946-4772 WEB: www.youngusa.
OPERATING INSTRUCTIONS Model 85004 Ultrasonic Anemometer Contents SECTION DESCRIPTION 1.0 SPECIFICATIONS 1 2.0 INTRODUCTION 1 3.0 INITIAL CHECKOUT 1 4.0 4.1 4.2 4.3 INSTALLATION Placement Mounting and Alignment Wiring and Power Requirements 2 2 2 2 5.0 5.1 5.2 5.3 5.
MODEL 85004 ULTRASONIC ANEMOMETER HEATED 2.0 INTRODUCTION The YOUNG 85004 Ultrasonic Anemometer is a 2-axis, nomoving-parts wind sensor. It is ideal for general meteorological applications requiring accurate and reliable measurement. The sensor features wide operating range, compact size, easy installation and low power operation. Analog and digital signal outputs are available in several popular formats. Heaters integrated into the transducers and housing enhance performance in cold conditions.
IMPORTANT: The Wind Tracker input option must be set to "INP 09". See the Wind Tracker manual for setting this option. 3.2 Apply power to the Wind Tracker and sensor. There will be a 5 second delay for initialization after which the unit will begin to send data. Wind speed and wind direction values will appear on the Wind Tracker. The sensor wind speed threshold is preset to 0.25 m/s (0.6 mph). Wind below this level is displayed as zero.
5.3.2 ASCII ASCII output provides continuous wind measurement data in text format. Between each measurement cycle, the sensor goes into a low power mode. There are a number of parameters related to the ASCII serial output format which may be altered. Please note that the default values are recommended for most applications. Careful analysis of the sensor's application should be done prior to making changes due to the interaction of parameters such as OUTPUT DELAY and SAMPLE COUNT. See section 6.0.
aC! aC1! aCC! aCC1! aD0! where: a ddd www.w ±uu.uu ±vv.vv a00102 a00102 a00102 a00102 a+www.w_ddd a±uu.uu±vv.vv However, this requires use with an SDI-12 compatible data logger. With SDI-12, the average current consumption may easily be reduced to less than 12 mA during measurements and 320 uA in standby. 6.
parameters are automatically changed. This may change the baud rate from its current setting. See section 6.4.2 for details on which parameters are altered. Although new parameter values are stored immediately when the command is issued, they do not take effect until the sensor enters OPERATE MODE.
6.4.9 SET09nn SET DAMPING FACTOR 6.4.14 SET14n SET VOLTAGE OUTPUT STATUS Wind measurement outputs are damped using the following formula: Sdamped = [(d-1) * Sdamped + Ssample] / d Serial ASCII and ASCII POLLED formats report a STATUS CODE where non-zero values indicate insufficient samples or measurement error. SET14n determines how the STATUS CODE is handled in the voltage output.
Voltage Output: Sample Count: Disabled Set to 0 if polling frequently. Set to highest anticipated wind speed (m/s) up to 31 if polling infrequently. Average current consumption is a function of polling rate and sample count. 7.5 SDI-12 CONTINUOUS R. M. Young Company 2801 Aero Park Drive Traverse City, MI 49686 USA Model 85004 Serial Output Format: SDI-12 CONT Output Delay: 0 Sample Count: 0 The undersigned hereby declares on behalf of R. M.
APPENDIX A: WIRING CONNECTIONS 85004-90 Page 8
APPENDIX A: WIRING CONNECTIONS 85004-90 Page 9
APPENDIX A: WIRING CONNECTIONS 85004-90 Page 10
APPENDIX A: WIRING CONNECTIONS 85004-90 Page 11
APPENDIX A: WIRING CONNECTIONS 85004-90 Page 12
APPENDIX B: SENSOR ORIENTATION AND DIMENSIONS MODEL 85004 ULTRASONIC ANEMOMETER +V (WIND FROM NORTH) NORTH 0° EXAMPLE: WIND AT 45° 90° 270° +U (WIND FROM EAST) TOP VIEW 180° CARTESIAN POLAR (U-V) (WIND SPEED, WIND DIRECTION) 170 [6.7] OPTIONAL: 85052 BIRD WIRE ASSY 347 [13.7] WHEN PROPERLY ALIGNED, JUNCTION BOX FACES SOUTH MOUNTING DEPTH 114 [4.5] MOUNTING: STANDARD 1" NPT PIPE Ø34.0 [1.32] ORIENTATION RING FRONT VIEW INSTALL VERTICALLY AS SHOWN TO AVOID MOISTURE DAMAGE TO CIRCUITRY.
