Note: The A100 and A100H Porton anemometers are RETIRED - these models are discontinued, and are only available as spares for existing installations...

-->> Please consider our A100L2/E or A100L2/H anemometer models (which have a similar functionality/output-signal) as alternatives/replacements.

The Porton™ Anemometer is a highly sensitive but robust transducer in which the rotational speed of a 3-cup rotor is measured by means of a photo-electronic pulse generator and ratemeter. An analogue d.c. voltage output is obtained which is substantially linear with respect to windspeed allowing accurate averaging of windspeed data.

The standard range A100 instrument gives 0..10v for 0..100Knots, the high range A100H instrument gives 0..7.5v for 0..75m/s. For low windspeed use, variants are available giving increased output voltages.

All rotors are supplied with individual calibration data traceable to national standards, and the low torque offered by the precision ball-race mounted shaft ensures a low thresholdspeed (0.15m/s) and good repeatability.

The small size and light weight of the A100 series anemometers together with the unique gravity sensitive fastener for the rotor facilitates use in portable applications.

These instruments also feature a remote calibration system.

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 instrument suitable 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.