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Windspeed Ltd (Vector Instruments), 113 Marsh Road, RHYL, N. Wales, LL18 2AB, United Kingdom.
Windspeed Limited
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Celebrating more than 50 years manufacturing & servicing High Quality Vector Instruments Anemometers and Windvanes at Windspeed Ltd
Anemometers
 
(A100 series anemometer)  Our A100 Series Anemometers are robustly constructed using weather resisting plastics, anodised aluminium and stainless steels enabling them to withstand continuous exposure to the weather, including marine environments, making them suitable for a wide range of applications where accuracy and sensitivity are important.

The A100 series anemometers all share the same basic construction and use the same R30 series 3-cup Rotors. Different internal modules and components are used to provide various output signals. The use of a precision ball-race mounted shaft ensures the essential low threshold speed and good repeatability. The outline and mechanical design, common to all the A100 series, remains largely unchanged since the introduction of the original Porton™ Anemometer in 1972, the electronics modules being continuously developed during this time to provide a well tried, durable and reliable product.

Anemometers have, until recent years, only been calibrated/evaluated in wind tunnels. Investigation by the wind power industry has found that various anemometer designs behave differently in field conditions where there is considerable turbulence. The Vector Instruments A100 design is one of a very few which has been subjected to field trials, and these have shown that Vector Instruments' A100L2, A100LK, A100K and A100LM anemometers (using the R30/K2, R30/K and R30/M3 rotors) are amongst the very few cup anemometer designs which can be classified as having "First Class" performance according to the requirements of the IEC61400-12-1 when suitably sited and operated. This high performance classification means that measurements are accurate in the actual wind conditions experienced in the field (as opposed to just being accurate in the artificial conditions of a low-turbulence wind tunnel) making them the clear choice for wind assessment applications.

In operation, the wind causes the rotor to rotate at a speed proportional to the wind speed. This rotation is sensed in our optoelectronic anemometers using a slotted disk and an optical beam. In the case of the switching anemometer the rotation is sensed using a balanced system of magnets and a reed-switch.

Options common to all the anemometers include anti-icing heaters, marine versions/rotors and mounting adaptors and anti-surge protection.

See also:
First Class Anemometers for Wind Turbine Testing and Wind Farm Site Assessment (Wind Assessment):

Type

Output Signal Type/Range

Resolution

Power Supply Required

Additional Features

Typical Applications

A100L2

0..1500Hz = 0..150Knots
(10Hz per Knot nominal)

0.05m

6.5 to 28V DC powered
(@1.5mA typical)

First Class, Low power,
Analog/Voltage Output:
0..2.5v = 0..150Knots nominal
[for higher output voltage/signal,
see A100L2/E & A100L2/H models below]

Datalogger/AWS/WindAssessment

A100LK

0..1500Hz = 0..150Knots
(10Hz per Knot nominal)

0.05m

4.75 to 28V DC powered
(@1mA typical)

First Class, Low power

Datalogger/AWS/WindAssessment

A100LM

0..750Hz = 0..75m/s
(10Hz per m/s nominal)

0.1m

4.75 to 28V DC powered
(@1mA typical)

First Class, Low power

Datalogger/AWS/WindAssessment

A100AC

2 pulses per revolution
(1.554Hz per m/s nominal)

0.625m

No power required

First Class, low-level AC output signal,
optimal cosine response

Datalogger/AWS/WindAssessment

A100R/K

1 pulse per revolution
(1.287m wind-run = 0.777Hz per m/s nominal)

1.25m

No power required

First Class, reed-switch transducer,
optimal cosine response

Datalogger/AWS/WindAssessment

A100L2/E

analog/voltage signal
0..5V = 0..50Knots
(nominal, overranges to ~8.8V at ~98kts)

0.05m

10 to 28V DC powered

Low power, Analog/Voltage Output:
0..5v = 0..50Knots nominal
(NO pulse/frequency output signal)
Also provides a stable/reference voltage
to energiise a W200P windvane.

Datalogger/AWS/PLC/Industrial

A100L2/H

analog/voltage signal
0..5V = 0..50m/s
(nominal, overranges to ~7.5V at ~76m/s)

0.1m

10 to 28V DC powered

Low power, Analog/Voltage Output:
0..5v = 0..50m/s nominal
(NO pulse/frequency output signal)
Also provides a stable/reference voltage
to energiise a W200P windvane.

Datalogger/AWS/PLC/Industrial
 
Other Anemometers:

Type

Output Signal Type/Range

Resolution

Power Supply Required

Additional Features

Typical Applications

A100K

0..1500Hz = 0..150Knots
(10Hz per Knot nominal)

0.05m

10 to 30V DC powered
(@35mA max)

Anti-Surge

Industrial/control/PLC

A100M

0..750Hz = 0..75m/s
(10Hz per m/s nominal)

0.1m

10 to 30V DC powered
(@35mA max)

Anti-Surge

Industrial/control/PLC

A100S

1 pulse per revolution
(1.25m wind-run = 0.8Hz per m/s nominal)

1.25m

10 to 30V DC powered
(@35mA max)

Anti-Surge

Industrial/control/PLC

A100R

1 pulse per revolution
(1.25m wind-run = 0.8Hz per m/s nominal)

1.25m

No power required

reed switch transducer

Datalogger/AWS/PLC

RETIRED Anemometers: - these models are discontinued, and are only available as spares for existing installations.

Type

Output Signal Type/Range

Resolution

Power Supply Required

Additional Features

Typical Applications

A100 Porton

analog/voltage signal
0..10V = 0..100Knots (nominal)

DISCONTINUED:
For alternative see: A100L2/E

0.05m

10 to 30V DC powered

High-Level Analog/Voltage Output:
0..10v = 0..100Knots nominal
(NO pulse/frequency output signal)

Datalogger/AWS/PLC/Industrial

A100H Porton

analog/voltage signal
0..7.5V = 0..75m/s (nominal)

DISCONTINUED:
For alternative see: A100L2/H

0.1m

10 to 30V DC powered

High-Level Analog/Voltage Output:
0..7.5v = 0..75m/s nominal
(NO pulse/frequency output signal)

Datalogger/AWS/PLC/Industrial

Note: New A100R models no-longer contain any mercury and are now RoHS2 compliant - they now use a "dry" reed-switch instead of the older mercury-wetted type - see the A100R page for details.


A100 Series Anemometers - First Choice for First Class

Vector Instruments' A100 Series Anemometers are among the very few available having Class 1 performance ("First Class") according to the requirements of IEC and MEASNET standards.

Available anemometer types include:
  • Low-Power Optoelectronic, Analog/Voltage AND Pulse/Frequency Output
    - A100L2 Anemometer
    (ideal for most data-loggers)

  • Low-Power Optoelectronic, Pulse/Frequency Output
    - A100LM and A100LK Anemometers
    (also ideal for most data-loggers)

  • Zero-Power, Contact-Closure (Reed Switch)
    - A100R Anemometer
    (lowest power of all, suitable for most dataloggers)

  • Optoelectronic, Pulse/Frequency Output
    - A100M and A100K and A100S Anemometers
    (suited for connection to PLCs)

  • Low-Power, Low-Level AC Output
    - A100AC Anemometers
    (suited for replacement of other manufacturers non-First Class low-level AC output anemometers, as used with many dataloggers)

  • Models with High-Level Analogue/Voltage Output
    - Porton A100L2/E and A100L2/H Anemometers
    (suited for Industrial Applications, e.g. connection to PLCs, loggers etc)

 A100 Series Anemometer Dimensions (mm) 
Unlike some other manufacturers, we do not manufacture a "combined" wind speed and wind direction sensor. With our product range you have the flexibility to chose an anemometer and windvane with appropriate output signals and mount them together at the top of a mast using one our 405-1 series mounting arms.

We do not manufacture "generator" type anemometers either, nor do we manufacture equipment for generating power from the wind (although our anemometers are commonly used for surveying and evaluating the suitability of a site for wind power generation).
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Note: The design of the catch/locking-mechanism attaching the rotors to these anemometers is protected by a number of Patents, including GB2521914B, US9404935, EP2921722.
Windspeed Ltd (Vector Instruments)
 Windspeed Limited (trading as Vector Instruments),
113 Marsh Road, RHYL, North Wales, LL18 2AB, United Kingdom
Tel: +44 (0) 1745 350700
Email: sales@windspeed.co.uk
 
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