A100LK-L Vector Anemometer
IEC 61400-12 Class 1 Anemometer
Ideal for wind-energy applications
weather applications water applications energy applications gas flux & turbulence applications infrastructure applications soil applications


The A100LK is an anemometer suitable for your general meteorology applications and wind-energy surveys. Its low power consumption and wide power-supply range make it popular for remote locations with no access to ac power, and its pulse/frequency signal is ideal for use with Campbell Scientific dataloggers. The sensor is constructed from anodized aluminum alloys, stainless steel, and weather-resistant plastics for long life. It is used as part of our WMS100 wind-monitoring system.

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Benefits and Features

  • IEC Class 1 performance
  • Low power consumption
  • High rate of pulses per revolution produced makes it suitable for wind-surveying applications where turbulence is estimated
  • Bearings protected from the entry of moisture droplets and dust, resulting in an instrument suitable for permanent exposure to the weather


A100LK mounted to a crossarm via the CM220 bracket (all items sold separately)

Detailed Description

Rotation of the A100LK’s three-cup rotor is electronically converted to pulse output signals proportional to wind speed. The A100LK produces a higher rate of pulses per revolution (up to 13) compared to relay-based sensors, making it suitable for wind surveying where turbulence needs to be estimated.


Threshold 0.15 ms-1 (starting speed 0.2 ms-1, stopping speed 0.1 ms-1)
Maximum Speed 77.22 ms-1
Accuracy 1% ±0.1 ms-1
Distance Constant 2.3 m ±10%
Calibration Data Supplied for anemometer and rotor at one test speed to an accuracy of ±1% at +15°C.
(12 Vdc supply and an analog output load of 1 MΩ)
Operating Temperature Range -30° to +70°C
Rotor 15.2 cm (6 in.) diameter three-cup rotor
Supply Voltage 6.5 to 28 Vdc
Current Consumption 2 mA maximum

1.6 mA typical (no output load)
Power-up Time 5 s
Surge Protection Vector PC3L2 anti-surge module fitted
Housing Diameter 5.5 cm (2.2 in.)
Height 19.5 cm (7.68 in.)
Weight 490 g (17.3 oz) including 3 m (10 ft) cable


Datalogger Considerations

The A100LK uses one pulse count channel on the datalogger.


The A100LK is read by the PulseCount Instruction in CRBasic and by Instruction 3 (Pulse Count) in Edlog. Wind speed measurements can be taken and processed with any of the dataloggers.

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X CR6 Series CR300 Series

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X


Frequently Asked Questions

Number of FAQs related to A100LK-L: 6

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  1. No. Cables are attached and sealed on the sensor by the manufacturer. Whenever possible, purchase a sensor with the desired cable length. Alternatively, a new sensor can be purchased with a foot of cable and then spliced onto the existing cable. Splicing cable together, however, increases the likelihood that water may enter the cable and cause shorting, corrosion, and some other potential issues, which in turn can cause measurement issues. Because of the potential issues, do not splice any sensor cable without first contacting Campbell Scientific to discuss the sensor in detail.

  2. Yes. Every A100LK-L ships with a MEASNET calibration certificate.

  3. Not every sensor has different cable termination options. The options available for a particular sensor can be checked by looking in two places in the Ordering information area of the sensor product page:

    • Model number
    • Cable Termination Options list

    If a sensor is offered in an –ET, –ETM, –LC, –LQ, or –QD version, that option’s availability is reflected in the sensor model number. For example, the 034B is offered as the 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, and 034B-QD.

    All of the other cable termination options, if available, are listed on the Ordering information area of the sensor product page under “Cable Termination Options.” For example, the 034B-L Wind Set is offered with the –CWS, –PT, and –PW options, as shown in the Ordering information area of the 034B-L product page.

    Note: As newer products are added to our inventory, typically, we will list multiple cable termination options under a single sensor model rather than creating multiple model numbers. For example, the HC2S3-L has a –C cable termination option for connecting it to a CS110 instead of offering an HC2S3-LC model. 

  4. Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:

    • An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
    • An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.

    If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

    If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.

    • –ET models terminate with the connector for an ET107 weather station.
    • –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
    • –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
    • –PW models terminate with the connector for a PWENC or pre-wired system.
  5. Many Campbell Scientific sensors are available with different cable termination options. These options include the following:

    • The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a datalogger.
    • In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
    • In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
    • In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
    • In the –RQ (–RQ w/RAWS Connector) option, the cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.

    Note: The availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact Campbell Scientific for assistance.

  6. It is possible that an older version of Short Cut is being used. Download the latest version of Short Cut.

    If the latest version of Short Cut has already been downloaded, open the program.

    1. Go to Tools | Options and make sure that the Enable Creation of Custom Sensor Files box is checked.
    2. In the Generic Measurements folder, right-click the type of measurement to be made for the sensor, and select Create Custom Sensor.
    3. Set the fields according to the sensor’s specification, hide those fields that the user does not need to see after being set, and save the custom sensor file settings with the Save As button.