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MODEL 85000
ULTRASONIC ANEMOMETER
1.0 SPECIFICATIONS
WIND SPEED
Range:
0-70 m/s (156 mph)
Resolution:
0.1 m/s
Accuracy:
0 to 30 m/s, ±2% or 0.1m/s
30 to 70 m/s, ±3%
WIND DIRECTION
Azimuth Range:
0-360 degrees
Resolution:
1 degree
Accuracy:
± 2 degrees
SERIAL OUTPUT
Type:
RS-232, RS-485, SDI-12
Formats:
ASCII Text (polled and continuous)
RMYT (Wind Tracker)
NMEA
SDI-12 (v1.3)
Baud Rates:
1200, 4800, 9600, and 38400 baud
ANALOG VOLTAGE OUTPUT
Polar
Wind Speed:
0 to 5000 mV (0 to 100 m/s)
Wind Direction:
0 to 5000 mV (0 to 360° or 0 to 540°)
Cartesian (UV)
U and V:
0 to 5000 mV (-100 m/s to +100 m/s)
GENERAL
Output rate:
1 Hz typical (selectable)
Power Supply:
9 to 16 VDC,
150 mA max
Dimensions:
34 cm high x 17 cm wide
Weight:
0.7 kg (1.5 lb)
Shipping Weight:
1.6 kg (3.5 lb)
2.0 INTRODUCTION
The YOUNG 85000 Ultrasonic Anemometer is a 2-axis, no-
moving-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.
The 85000 measures wind based on the transit time of ultrasonic
pulses between four transducers. Air flow alters the transit
time which is used to calculate flow velocity. Wind direction is
determined from relative velocities along each acoustic path.
Measurement results are available as calibrated voltage
output signals or serial data using RS-232, RS-485, or SDI-12
connections. Continuous output or polled operation may be used.
Serial formats may be selected for direct connection to YOUNG
Wind Tracker displays, marine NMEA systems, SDI-12 data
loggers, and ASCII serial communication programs.
Operating parameter options are selected using a simple setup
program provided. All 85000 settings are stored internally in non-
volatile memory.
The sensor is constructed using UV-stabilized thermoplastic,
stainless steel, and anodized aluminum for superior environmental
resistance.
It is easily mounted on standard 1 inch (IPS) pipe.
An orientation ring preserves mounting position when the sensor
is removed.
3.0 INITIAL CHECKOUT
Carefully unpack the unit and inspect for physical damage. Any
damage should be reported to the shipper. The 85000 arrives fully
calibrated and ready to use. As supplied, the sensor is configured
as follows:
FACTORY DEFAULT CONFIGURATION:
Serial Output:
- RMYT Format
- RS-232
- RS-485 Output Only
- 9600 baud
Analog Voltage Outputs:
- Channel V1: Wind Speed
0-5000 mV = 0-100 m/sec
- Channel V2: Wind Direction
0-5000mV = 0-360 Deg
These settings will permit direct serial connection to the Young
Model 06201 Wind Tracker and connection of the voltage outputs
to a voltage measuring device or datalogger. For other available
serial or voltage output configurations refer to the appropriate
sections of the manual.
A simple operational check of the sensor may be performed as
follows: (Requires Model 06201 Wind Tracker)
3.1
Remove junction box cover and connect power and
signal wires to terminals as indicated in WIRING
CONNECTIONS (APPENDIX A). Supply voltage must
be 9 to 16 VDC.
Page 1
85000-90
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