RM Young 81000VRE – Ultrasonic Anemometer – 3 Axis with Extended Mast and Volt Inputs and Serial Outputs

The Young Model 81000VRE measures three dimensional wind velocity and speed of sound based on the transit time of ultrasonic acoustic signals. Sonic temperature is derived from speed of sound which is corrected for crosswind effects. Four voltage input channels measure DC signals from external sensors concurrent with wind measurements Measurement data are available as serial output using RS-232 or RS-485 connections. A variety of serial output formats are available including a custom format which is easily set by the user. Operating parameters may be edited via simplified menus using an ordinary serial communication program like HyperTerm. All parameters are stored in non-volatile memory. Superior environmental resistance is achieved by using UV stabilized thermoplastic, stainless steel, and anodized aluminum components. Electrical connections are made via an easily accessible junction box. The unit mounts on standard 1 inch pipe, outside diameter 34mm (1.34″).

Specifications

WIND SPEED
Range: 0 to 40 m/s (0 to 90 mph)
Resolution: 0.01 m/s
Threshold: 0.01 m/s
Accuracy: ±1% rms ±0.05 m/s (0 to 30 m/s)
±3% rms (30 to 40 m/s)

WIND DIRECTION
Azimuth Range: 0.0 to 359.9 degrees
Elevation Range: ±60.0 degrees
Resolution: 0.1 degree
Accuracy: ±2° (1 to 30 m/s)
±5° (30 to 40 m/s)

SPEED OF SOUND
Range: 300 to 360 m/s
Resolution: 0.01 m/s
Accuracy: ±0.1% rms ±0.05 m/s (0 to 30 m/s wind)

SONIC TEMPERATURE
Range: -50 to +50 ºC
Resolution: 0.01 ºC
Accuracy: ± 2 ºC (0 to 30 m/s wind)

VOLTAGE INPUT (4 CHANNELS)
Range: 0 to 5000mV V1 and V2
0 to 1000mV V3 and V4
Resolution: 1 part in 4000
Accuracy: ± 0.1% of full scale

GENERAL
Air sample column: 10 cm high X 10 cm diameter
Air sample path: 15 cm
Output rate: 4 to 32 Hz (selectable)
Output formats: Serial data (selectable)
RS-232 and RS-485
Baud Rates: 1200 to 38400
Power Supply: 12 to 24 VDC, 110 mA
Dimensions: Overall height 70 cm
Support arm radius 17 cm
Mounting 34mm (1.34 in) diameter
(standard 1 inch pipe)
Weight: Sensor weight 1.7 kg (3.8 lb)