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Vector - Model A100L2 -Low Power Anemometer
This anemometer was developed from the proven A100 Porton™ instrument and R30 rotor design in response to demand for an anemometer offering pulse/frequency and analogue voltage outputs while consuming little supply current. The low power consumption, wide power supply range and choice of pulse/frequency and analogue voltage output signals make this anemometer a popular choice for use with data loggers for applications such as general meteorology and wind-power site surveying as this instrument has first class performance.
A slotted disk interrupting a light beam is used to detect the motion of the calibrated R30 series 3-cup rotor and hence determine the wind speed. The internal electronics condition this pulse signal for output as a 5V squarewave and use it to generate an analogue voltage proportional to the wind speed.
The A100L2 has a "secondary" analog/voltage output signal in addition to the "primary" pulse/frequency output signal, however the analog/voltage signal is less accurate (see specsheet) and we advise that only the pulse/frequency signal be used in applications requiring the highest accuracy (such as Wind Assessment). Please refer to the A100LK for a similar anemometer with pulse/frequency output signal only.
Construction is from anodised aluminium alloys, stainless steels and weather resisting plastics for exposed parts. Precision corrosion resistant ball-races and a stainless steel shaft enable the R30 rotor response to produce a highly sensitive yet robust instrumentsuitable for continuous exposure to the weather.
Options for this anemometer include:
- /PC3 Anti-Surge protection
- /HE-4 Internal Anti-Icing Heater
- /HE-1 & /HE-2 External/Retrofit Anti-Icing Heaters
- /WR Marine Version
Note: /WR, /HE-1 and /HE-2 are not recommended for high precision applications.
The recommended mounting adaptors for use with this instrument are our type 405 and 405-1 series.
Vector Instruments A100L2 Anemometers are among the very few available having Class 1 performance ("First Class") according to the requirements of IEC and MEASNET standards.
- Threshold: 0.15m/s (0.3Kt)
- Starting Speed: 0.2m/s (0.4Kt)
- Stopping Speed: 0.1m/s (0.2Kt)
- Maximum Windspeed: over 75m/s (146Kts)
- Temperature Range: -30 to +70 °C
- Accuracy (Pulse O/P): 1% of reading between 20Kts and 110Kts (2% above 110Kts, 0.2Kts below 20Kts)
- Non-Linearity (Pulse O/P): 0.4% full-range output frequency (correction curve supplied)
- Distance Constant: 2.3m +/-10% (R30 rotor)
- Overall Non-Linearity (Analog O/P): 0.9% FRO (0..150Kts, at const. temp/supply voltage, rotor+ratemeter correction curve supplied).
- Temperature stability (Analog O/P): +/-2% of output (over -30..+40°C range).
- Supply Voltage: 6.5..28V DC (max 2mA, average is typically less than 1mA)
- Analog Output Signal: 0 to 2.5V = 0 to 150Kts
- Pulse Output Signal: 0V / 5V, at 10Hz per Knot (i.e. 0..1500Hz = 0-150Kts)
- Resolution: 5.15cm
- Rotor: 3-cup R30K (standard)
- Dimensions: This instrument is constructed using our standard rotor and anemometer body design and dimensions. Wiring/Connections (Cable colours): For wiring details click HERE
- Cable: 3m (9ft10in) permanently attached 6-conductor* cable with braided shield/screen as standard. Longer lengths are available to order (up to 115m). Spec: Def Stan 61-12 part 4, 0.22mm²(∼24AWG). *Note: 8-conductor used for /HE4 models.
- MEASNET/IEC Calibration Certificate (optional extra): The A100L2 Anemometer is available with an IEC/MEASNET Calibration Certificate on the pulse/frequency output channel (for an additional charge)