
Alpha-Log
Alpha-Log is the most powerful data logger in the LSI Lastem family. With 400MB of internal memory and the removable memory up to 32GB it is suitable also in complex systems
Combined wind speed and wind direction sensor
Combined wind speed and wind direction sensor. This sensor range includes, in a single apparatus, transducers for both wind speed and wind direction measurement. Its use simplifies installation requirements, other than being smaller, lighter and cheaper than the general 2-sensors kit. Accuracy and thresholds are anyway near to be comparable with a 2-sensors cup and vane kit alternatives. Different data output signals are available.
• Alternative signal outputs: (Hz+0-1 V), 0-5 V, 4-20 mA, RS485 Modbus;
• Wide power supply: 9-30 Vac/dc;
• Simple to install on pole 5 cm diameter;
• High demage threshold up to 75 m/s;
• Optional cable up to L.100 m In house;
• ISO17025 accreditate calibration laboratory.
| Order numb. | DNA121 | DNA821 DNA821.1 DNA821.2 |
DNA827 | DNA921 |
| Wind speed output | 0…833 Hz | 4…20 mA | 0…5 Vdc | RS485 |
| Wind speed measuring range |
0…75 m/s (demage limit) |
DNA821: 0…60 m/s DNA821.1: 0…50 m/s DNA821.2: 0…75 m/s |
0…60 m/s | 0…60 m/s |
| Wind Direction output | 0…1 Vdc | 4…20 mA | 0…5 Vdc | RS485 |
| Protocol | – | – | – | Modbus RTU®, TTY-ASCII |
| Configuration | – | – | – | Hyperterminal |
| EMC | EN61326-1 2013 | EN61326-1 2013 | EN61326-1 2013 | EN61326-1 2013 |
| RS485 protection | – | – | – | Galvanic insulation (3 kV, UL1577) |
| RS485 speed | – | – | – | 1200…115 kbps |
| Power supply | 10…30 Vac/dc | 10…30 Vac/dc | 10…30 Vac/dc | 10…30 Vac/dc |
| Power consumption | 0.5 W | 0.5 W | 0.5 W | 0.5 W |
| Data logger compatibility |
M-Log (ELO008), E-Log, Alpha-Log using ALIEM module. |
M-Log (ELO008), E-Log, Alpha-Log using ALIEM module. |
– | E-Log using RS485- >232 converter, Alpha-Log. |

Alpha-Log is the most powerful data logger in the LSI Lastem family. With 400MB of internal memory and the removable memory up to 32GB it is suitable also in complex systems

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