Related Manuals for LSI LASTEM DNB146
Summary of Contents for LSI LASTEM DNB146
- Page 1 Environmental monitoring solutions 3-axis ultrasonic anemometer DNB146 User manual Updated 07/03/2022 INSTUM_ 04861 Page 1/15...
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Page 2: Table Of Contents
2.3.1 RS-485 serial connection ......................8 2.3.2 Analog Output connection ......................8 2.3.3 Connection to LSI LASTEM data logger ..................8 Configuration ............................. 9 Connecting PC to the sensor ......................9 Accessing the configuration ......................10 Disabling compass ........................... 10 LSI Lastem data logger configuration ...................... -
Page 3: Description
The sensor is equipped with a magnetic compass for automatic alignment to the Magnetic North. It has 5 4÷20 mA analog outputs and a digital output on RS-485 serial with Modbus-RTU protocol. The anemometer can be connected to LSI LASTEM acquisition systems, or any other device using such kind of input. - Page 4 3-axis ultrasonic anemometer – User manual General features Electrical connection 26-pole male connector Operating temperature -40÷60 °C Protection degree IP 66 Weight 1500 g Housing Luran/aluminum On mast ∅ 33 mm Mounting On mast ∅ 55 mm (using DNB192 adapter – not included) Data logger compatibility Analog outputs: •...
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Page 5: Installation
3-axis ultrasonic anemometer – User manual 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. -
Page 6: Mechanical Installation
3-axis ultrasonic anemometer – User manual 2.2 Mechanical installation 1. Mount the anemometer on the 2. Screw the 26-pole fe- mast ∅ 33 mm. In case of mast male connector of the ∅ 50 mm, use the DNB192 cable to the anemome- adapter. -
Page 7: Electrical Connections
3-axis ultrasonic anemometer – User manual 2.3 Electrical connections All connections are performed through a 26-pole male connector situated at the bottom of the anemome- ter. The figure and the table below show numbers and function of the connector contacts: Pin connector Signal Description... -
Page 8: Rs-485 Serial 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 connection to LSI LASTEM data logger see the DISACC200074 supplied with the anemometer. INSTUM_ 04861 Page 8/15... -
Page 9: Configuration
3-axis ultrasonic anemometer – User manual 3 Configuration The DNB146 anemometer is ready for working with LSI LASTEM data loggers. The table below shows its configuration. Path\Parameter Description Value Baud Communication speed of the serial ports 9600 bps Threshold Minimum wind speed threshold 0.02 m/s... -
Page 10: Accessing The Configuration
3-axis ultrasonic anemometer – User manual 3.2 Accessing the configuration Once the anemometer has been connected to the PC (§3.1), turn on the sensor and check the reception of the values on the terminal. Press the key ? to access the main menu. The menu items can be selected by entering the let- ter assigned to each item. -
Page 11: Lsi Lastem Data Logger Configuration
➢ Open the current configuration of the data logger. ➢ Add the DNB146 Dig sensor from the sensor library. If the data logger in use is Alpha-Log, you will be asked to set the Modbus as input type and the communication parameters of the serial port where the sensor will be connected. -
Page 12: Modbus-Rtu
3-axis ultrasonic anemometer – User manual 5 Modbus-RTU The DNB146 ultrasonic anemometer implements the Modbus protocol in RTU slave mode. 5.1 Supported commands The sensor supports the Read input registers (0x04) command for accessing the acquired data. If the data request refers to an incorrect command or register, the sensor does not generate any response message. -
Page 13: Maintenance
3-axis ultrasonic anemometer – User manual 6 Maintenance 6.1 Testing This type of testing is only required if the user wishes to verify the well functioning of each part of the anemometer. Please note that these tests are not intended to establish the operational limitations of the sensor. - Page 14 3-axis ultrasonic anemometer – User manual ° ° ° ° ° ° 0 (o 360) 4 (o 20) 6.67 9.33 12.00 14.67 17.33 4.44 7.11 9.78 12.44 15.11 17.78 4.89 7.56 10.22 12.89 15.56 18.22 5.33 8.00 10.67 13.33 16.00 18.67 5.78 8.44...
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Page 15: Periodic Maintenance
(RAEE). For this reason, at the end of its life, the instrument must be kept apart from oth- er wastes. LSI LASTEM is liable for the compliance of the production, sales and disposal lines of this product, safeguarding the rights of the consumer. Unauthorized disposal of this product will be punished by the law.
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