LSI LASTEM DNA310.1 User manual

INSTUM_00222 Page 1/12
Environmental monitoring solutions
Cod. MW6020
Wind direction sensors
User’s manual
Updated 02/10/2020

Wind direction sensors –User’s manual
INSTUM_00222 Page 2/12

Wind direction sensors –User’s manual
INSTUM_00222 Page 3/12
Index
1 Description................................................................................................................................................. 4
1.1 Main features .................................................................................................................................... 4
1.2 Models and technical specifications.................................................................................................. 4
1.2.1 Standard sensor......................................................................................................................... 4
1.2.2 Compact sensor......................................................................................................................... 5
2 Assembly instructions................................................................................................................................ 5
2.1 Mounting standard sensor (DNA31x, DNA81x)................................................................................. 6
2.2 Mounting compact sensor (DNA212.1)............................................................................................. 7
3 Connections............................................................................................................................................... 8
4 Maintenance.............................................................................................................................................. 9
4.1 Testing ............................................................................................................................................... 9
4.2 Periodic maintenance........................................................................................................................ 9
5 Accessories / Spare parts......................................................................................................................... 10
5.1 Sensore DNA212.1........................................................................................................................... 10
5.2 Sensori DNA31x.1, DNA81x ............................................................................................................. 10
6 Conformity declarations.......................................................................................................................... 11

Wind direction sensors –User’s manual
INSTUM_00222 Page 4/12
1Description
1.1 Main features
Wind direction sensors with analogue output are ideal when integration with third-party acquisition
systems is required.The DNA301.1 and DNA311.1 sensors, thanks to the 0-1 V output, are also ideal for
being connected to LSI-LASTEM acquisition systems. Low delay path and precision encoder make these
sensors very suitable for speed measurements even at low wind speeds. DNA311.1, DNA811 and DNA815
are equipped with heaters to prevent the formation of ice on its body in very cold environments.
The DNA212.1 sensor is particularly suitable for use in high-wind applications, where long-term reliability
without maintenance is required, such as in wind farms and wind turbine surveys. Also ideal for portable
and light weather stations and for wind alarm applications where wind speed and direction are both
important aspects; in this regard, the LSI LASTEM data loggers can identify specific wind alarm conditions
and open digital outputs when the wind speed exceeds a certain threshold and the wind direction comes
from a defined angle.
1.2 Models and technical specifications
1.2.1 Standard sensor
Order numb.
DNA310.1
DNA311.1
Principle
Magnetic encoder
Output
0÷1 V
Power supply
10÷30 V
10÷30 V (24 V heater)
Heater
-
YES
Heater operative temperature
-20÷4 °C
Power consumption
0.5 W
0.5 + 20 W heater
Data logger compatibility
M-Log (ELO008), R-Log (ELR515), E-Log, A-Log
Order numb.
DNA810
DNA811
DNA814
DNA815
DNA816
Principle
Magnetic encoder
Output
4÷20 mA
0÷20 mA
0÷5 Vdc
Power supply
10÷30 Vac/dc
24 V heater
10÷30 Vac/Vdc
24 V heater
10÷30 Vac/dc
Heater
-
YES
-
YES
-
Heater operative temperature
-
-20÷4 °C
-
-20÷4 °C
-
Power consumption
0.5 W
0.5+20 W hea.
0.5 W
0.5+20 W hea.
0.5 W
Common features
Wind direction
Measuring range
0÷360°
Uncertainty
3°
Threshold
0.15 m/s
Delay distance
1.2 m (@ 10 m/s). According to VDI3786 and ASTM 5366-96
Damping coeff.
0.21 (@ 10 m/s). According to VDI3786 and ASTM 5096-96
General
Information
Connector
7 pin IP65 watertight connector
Housing
Anodized aluminum
EMC
EN 61326-1: 2013
Protection
IP66
Operative temperature
-35÷70 °C (without ice)
Mounting
Mast ø 48 ÷ 50 mm

Wind direction sensors –User’s manual
INSTUM_00222 Page 5/12
1.2.2 Compact sensor
DNA212.1
Wind
Principle
Magnetic encoder
direction
Measuring range
0÷360°
Threshold
0.4 m/s
Accuracy
3°
General
Output
0÷1 V
Information
Connector
7 pin IP65 watertight connector
Housing
Anodized aluminum
Power supply
10÷30 Vdc
Power consumption
0.4 W
EMC
EN 6132-1 2013
Protection
IP66
Mounting
Mast ø 48 ÷ 50 mm
Operative temperature
-48÷ +60°C (without ice)
Data logger compatibility
M-Log (ELO008), R-Log (ELR515), E-Log, A-Log
2Assembly instructions
The gonio-anemometer can be assembled either alone or coupled with the tacho-anemometer by mean of
the coupling bar DYA046.
Select a well-exposed spot for the instrument. The WMO (World Meteorological Organization) suggests that
the instrument should be assembled 10 m off the ground; in a place where the distance between the sensor
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 instrument should
be assembled in a spot which is reasonably uninfluenced by local obstructions.

Wind direction sensors –User’s manual
INSTUM_00222 Page 6/12
2.1 Mounting standard sensor (DNA31x, DNA81x)
Unscrew the nut and washer from the shaft thread.
Insert the DNA127 wind vane on the sensor’s body. Keep
the shank in a steady position and insert the vane until it
goes until the nut adjustment.
Insert the washer and nut on the threaded shaft; then
tighten with a wrench while holding the shaft with the
screwdriver. ATTENTION! Do not tighten the nut by
holding the windvane with your hand to prevent that
the sensor loses its setting.
Tighten the protective cover.
Connect the cable to the sensor.
Mount the sensor on the mast and tighten the screw.
When fixing the sensor in its position on the pole, point
the "red nose” to NORTH for orientation.
Read Part 3: Connections

Wind direction sensors –User’s manual
INSTUM_00222 Page 7/12
2.2 Mounting compact sensor (DNA212.1)
Unscrew the screw from the shaft thread.
Insert the DNA218 wind vane on the sensor’s body. Take
care to centre the wind vane’s notch with the tooth on the
sensor body's rotating cone.
Fix the screw and tighten it.
Connect the DWA5xx cable to the sensor. If you do not
have the DWA5xx cable but the MG2251 connector, build
the cable as indicated below.
Open the MG2251 free connector. Pass the cable as in the
picture above, select the rubber ring B (ø 6 or 9 according
to the cable dimension).
Fix the cable (n.5 wires) on the connector D: screw each
wire (indicated by the arrow) on the correspondent
connector pin as in the above drawing.
Attention to the colour of the wires when connecting the
sensor to the data logger.

Wind direction sensors –User’s manual
INSTUM_00222 Page 8/12
If instead the DNA212.1 sensor replaces the DNA212
sensor, connect the existing cable to the new sensor using
the CCDCA0004 adapter.
Finally, mount the sensor on the mast, orient the red nose
to NORTH and tighten the screws (indicated by the arrow).
3Connections
Connections must be performed following the drawings:
DNA212.1 DISACC 200006
DNA310.1 DISACC 07032
DNA311.1 DISACC 07046
DNA810 DISACC 07024
DNA811 DISACC 5860
DNA814 DISACC 7023
DNA815 DISACC 07025
DNA816 DISACC 7030
DWA5xx (cable) DISACC 3217

Wind direction sensors –User’s manual
INSTUM_00222 Page 9/12
4Maintenance
4.1 Testing
This type of testing is only required if the user wishes to verify the well-functioning of each part of the
instrument. Please note that these tests are not intended to establish the operational limitations of the
instruments.
Visual check
-body of the sensor is in a level position
-vane is not broken or deformed
Mechanical check
Having removed the vane, check that the conical pin (Compact version) or the shaft thread (Standard
version) on which the vane rotates moves freely and perfectly smoothly. If not bearings replacement is
needed.
Output operational check - DNA81x, DNA310.x, DNA311.x, DNA212.1
Connect the system (power on the power supply) to the signal output reader and measure the wind
direction with the following results:
Cardinal point
01 V
420 mA
020 mA
05 Vdc
NORTH
1 - 0
20 - 4
20 –0
5 - 0
EAST
0.25
8
5
1.25
SOUTH
0.5
12
10
2.50
WEST
0.75
16
15
3.75
Heater check (for heated sensor only):
•Check that the heater is in good working order;
•Remove the vane from the body of the sensor;
•Leave the sensor in a freezer for 3/4 hours at a temperature below 2 °C;
•Connect a multimeter to the ends of cables 6-Red 5-White for DNA311.1 or 1-Brown 6-White for
others;
•Under these conditions, the resistance recorded should be approx. 40 Ω.
4.2 Periodic maintenance
LSI LASTEM advises don’t leave the sensor in outdoor operation without its rotor/vane. Routine checks
should be carried out on the wind direction sensors.
•Clean the sensor, attention to the space between the transducer and the cup.
LSI LASTEM suggests checking the instrument calibration at least every 2 years.

Wind direction sensors –User’s manual
INSTUM_00222 Page 10/12
5Accessories / Spare parts
5.1 Sensore DNA212.1
Codice
Descrizione
DYA046
Coupling bar for WS+WD sensors on ø 45 ÷65 mm pole
DWA505
Cable L = 5 m
DWA510
Cable L = 10 m
DWA525
Cable L = 25 m
DWA526
Cable L = 50 m
MG2251
Free female 7 pin watertight connector
DNA218
Spare part: vane
MM2001
Spare part: bearing
SVICA2304
Calibration certificate according to ISO9000 (wind direction)
CCDCA0004
Adapter to connect the DNA212’s cable to the DNA212.1 sensor
5.2 Sensori DNA31x.1, DNA81x
Codice
Descrizione
DYA046
Coupling bar for WS+WD sensors on ø 45 ÷65 mm pole
DWA505
Cable L = 5 m
DWA510
Cable L = 10 m
DWA525
Cable L = 25 m
DWA526
Cable L = 50 m
DWA527
Cable L = 100 m
MG2251
Free female 7 pin watertight connector
DNA217
Spare part: vane
MM2025
Spare part: bearing
SVICA2304
Calibration certificate according to ISO9000

Wind direction sensors –User’s manual
INSTUM_00222 Page 11/12
6Conformity declarations

Wind direction sensors –User’s manual
INSTUM_00222 Page 12/12