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3-axis ultrasonic anemometer 

 User manual 

 

INSTUM_ 04861

 

Page 

5/15 

2

 

Installation 

For the installation choose a well-exposed spot for the anemometer. The WMO (World Meteorological Or-
ganization)  suggests that the  sensor  should be assembled 10 m off the ground; in a place where the  dis-
tance  between  the  anemometer  and  surrounding  obstacles  which  might  disturb  the  measurements  is  at 
least 10 times the height of those objects from the ground. As such a position is difficult to find, the WMO 
suggests that the sensor should be assembled in a spot which is reasonably uninfluenced by local obstruc-
tions. 
 

2.1

 

General safety rules 

Please read the following general safety rules to avoid injuries to people and prevent damages to the prod-
uct or to possible other products connected with it. To avoid any damages, use this product exclusively ac-
cording to the instructions herein contained. 

The  installation  and  maintenance  procedures  must  be  carried-out  only  by  authorized  and  skilled  service 
personnel. 

Power the instrument in a suitable manner. Pay attention and observe the power supplies like indicated for 
the model in your possession. 

Carry-out  all  connections  in  a  suitable  manner.  Pay  strict  attention  to  the  connection  diagrams  supplied 
with the instrument. 

Do not use the product in case of suspected malfunctions. In case of suspected malfunction, do not power 
the instrument and contact authorized technical support immediately. 

Before you carry-out any operation on electrical connections, power supply system, sensors and communi-
cation apparatus: 

 

Disconnect the power supply. 

 

Discharge the accumulated electrostatic discharges touching an earthed conductor or apparatus. 

 

 

 

Summary of Contents for DNB146

Page 1: ...INSTUM_ 04861 Page 1 15 Environmental monitoring solutions 3 axis ultrasonic anemometer DNB146 User manual Updated 07 03 2022...

Page 2: ...3 2 Analog Output connection 8 2 3 3 Connection to LSI LASTEM data logger 8 3 Configuration 9 3 1 Connecting PC to the sensor 9 3 2 Accessing the configuration 10 3 3 Disabling compass 10 4 LSI Lastem...

Page 3: ...dbus RTU protocol The anemometer can be connected to LSI LASTEM acquisition systems or any other device using such kind of input 1 2 Technical specifications DNB146 Wind speed Principle Ultrasounds Me...

Page 4: ...ure 40 60 C Protection degree IP 66 Weight 1500 g Housing Luran aluminum Mounting On mast 33 mm On mast 55 mm using DNB192 adapter not included Data logger compatibility Analog outputs M Log code ELO0...

Page 5: ...t or to possible other products connected with it To avoid any damages use this product exclusively ac cording to the instructions herein contained The installation and maintenance procedures must be...

Page 6: ...etallic objects it must be positioned with the metal sup port opposite the connector facing Nord 4 Once the align ment is complete fix it on the sup port mast by tight ening the cable tie at the bot t...

Page 7: ...RX Pole B RS 485 Rx B RS 422 White Green W DATA RX Pole A RS 485 Rx A RS 422 Grey X SG Ground RS 232 Yellow Y TXD Tx data RS 232 White Yellow L RXD Rx data RS 232 Yellow Brown E OUTV1 Analog Out volta...

Page 8: ...rial connection For more information regarding RS 485 consult the EIA Electronic Industries Association 2 3 2 Analog Output connection 2 3 3 Connection to LSI LASTEM data logger For the wiring connect...

Page 9: ...ID Modbus address 1 3 1 Connecting PC to the sensor By means of a terminal emulation program such as Windows Hyper terminal it is possible to modify the sensor configuration parameters from the PC by...

Page 10: ...ssigned to each item Upon selection a submenu is opened or the selected parameter is displayed with its value Changes to values are confirmed with Enter or discarded with Esc If no key is pressed on t...

Page 11: ...of the measures to distinguish them from each other o In the Elaborations tab choose the desired elaborations Save the configuration and send it to the data logger 4 2 Use of digital output To use the...

Page 12: ...ded by the relative multiplication fac tor Error codes table Error code Description Anomaly 1x First pair lower transducer error 2x First pair upper transducer error 3x Second pair lower transducer er...

Page 13: ...ultimeter to the second output wind direction 6 Subject the sensor to the air flows with the angles 0 90 180 and 270 checking the correspond ing current values as indicated in the following table Air...

Page 14: ...drate 9600 bps Parity None and that the PC serial port used is COM1 modpoll a 1 r 1 c 8 t 3 COM1 Enter The program displays the measurement values in the following order Wind Speed Wind Direction Elev...

Page 15: ...onmental protection and collection LSI LASTEM recommends handling the product as waste of electrical and elec tronic equipment RAEE For this reason at the end of its life the instrument must be kept a...

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