Combined wind speed-direction sensor

At the AWS Pyramid Laboratory Observatory station the CombiSD DNA022 Lsi-Lastem combined wind speed-direction sensor is mounted on a 5m pole.

The CombiSD sensor includes, in a single apparatus, the both transducers for measuring wind speed and wind direction. Its use simplifies the installation and the plant design in respect of the sensors with separate measurements plus giving some other advantages being smaller, lighter and cheaper. The CombiSD DNA022: sensor has a direct signal output. Frequency (Hz) for wind speed and resistance (Ohm) for wind direction. the CombiSD has low power consumption, it can be used in systems with small energy availability.

The technical characteristics are:

- Principle of operation: 3 cups and vane anemometer

- Speed sensor: Optoelectronic disk

- Direction sensor: 2000 Ohm wire potentiometer / Positioning Hall effect sensor

- Housing: Heavy gauge anodised aluminium

- Shaft carriers: Low-torque stainless steel bearings

- Protection (vertical position): IP65

- Mechanical mounting: On 48 50 mm diameter mast

- Electrical outlet terminators: IP65 watertight connector

- Weight (instrument with rotors): 950 gr.

The Physical and operational specification are:

- damage threshold > 75 m/s

- operating temperature: -30°+70°C

The speed measures are specified by:

- Measurement range: 0-60 m/s (using transfer function)

- Threshold: 0,21 m/s

- Response time (63% at 5 m/s): 0.8 s

- Distance constant (delay distance) at 5 m/s: 4 m

- Resolution (integration time=1s): 0.05 m/s

- Accuracy & Linearity: 0,1 m/s+1%VL (readout), if connected to LASTEM data loggers.

The direction measures are specified by:

- Measurement range: 0 ÷ 360

- Threshold: 0,15 m/s

- Response time (at 5 m/s): 0,26 s

- Delay distance (at 5 m/s): 1,32 m

- Damping coefficient (VDI3786): 0,21

- Transfer function: Dir(°)= 355 x R(Ohm)/2000

- Resolution: 0,1

- Accuracy: 1% FS (Full scale)

- Integral linearity: 0,5%

 
Citation proposal
(2011) . Combined wind speed-direction sensor. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/d47a4448-145e-4506-a8df-9caffaae0e07
 

Simple

Date ( Publication )
2011-04-12T19:08:00
Edition
Name
Pyramid Laboratory Observatory (Lobuche, Khumbu Valley, Himalaya - Nepal)
Purpose

The purpose of this resource in Pyramid Laboratory Observatory station is to acquire data on:

- wind speed

- wind direction

Status
On going

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org/  
Maintenance and update frequency
As needed
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
Keywords ( Theme )
  • SHARE , monitoring network , station, wind speed, wind direction
Keywords ( Place )
  • Nepal , Lobuche , Khumbu Valley , Sagarmatha National Park
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
Keywords ( Theme )
  • SHARE , monitoring network , station, wind speed, wind direction
Keywords ( Place )
  • Nepal , Lobuche , Khumbu Valley , Sagarmatha National Park
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
Keywords ( Theme )
  • SHARE , monitoring network , station, wind speed, wind direction
Keywords ( Place )
  • Nepal , Lobuche , Khumbu Valley , Sagarmatha National Park
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
Keywords ( Theme )
  • SHARE , monitoring network , station, wind speed, wind direction
Keywords ( Place )
  • Nepal , Lobuche , Khumbu Valley , Sagarmatha National Park
Use limitation
Data Sharing and Publication Policy at DISTRIBUTION SECTION
Access constraints
Intellectual property rights
Other constraints
Spatial representation type
Vector
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
  • Geoscientific information
  • Environment
N
S
E
W


Reference system identifier
EPSG / WGS 84 (EPSG:4326) / 7.4
Topology level
Geometry only
Geometric object type
Point
Geometric object count
1
OnLine resource
SHARE Geonetwork  

SHARE Geonetwork

OnLine resource
gn:share_station  

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OnLine resource
SHARE_DSPP_10042014.pdf  

SHARE Data Sharing and Publication Policy

OnLine resource
Data_Request_Form.pdf  

SHARE Meteorological Data Request Form

Hierarchy level
Series
Other
Data: wind speed, wind direction
Statement
The instrument is mounted on a 5m mast.

gmd:MD_Metadata

File identifier
d47a4448-145e-4506-a8df-9caffaae0e07   XML
Metadata language
eng
Character set
UTF8
Parent identifier
8f278c1b-1eb8-47be-9a0a-a7429c23dd9c
Hierarchy level
Series
Hierarchy level name
Date stamp
2019-12-04T19:15:55
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org  
Dataset URI
 
 

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