Anemometers (Windspeed)
High specification anemometer. Marine versions are available, as are heating elements
- An anemometer for run of wind measurements, or operation with an electronic counter to determine average wind speed.
- A magnet turns with the rotor spindle and the resulting varying field causes a mercury wetted reed switch to make and break contact once per revolution of the rotor.
- The contacts are bounce free, simplifying connection to electronic circuits, and no power is required apart from that necessary to detect contact closure,
- Suitable for permanent exposure to the weather.
- In the marine version (A100/WR) a touching shaftseal is fitted for extra protection in place of the standard non-contact seal, with a small increase in threshold speed.
- An anti-icing heater can be fitted if required facilitating use at remote sites
| Performance: Threshold | 0.25m/s (0.6 m/s A100R3), Max speed over 75m/s |
| Performance: Accuracy | 1% +0.1m/s, distance constant 5m |
| Calibration | 0.80 revolutions per meter (1 pulse per 1¼ meters) |
| Temperature range | -30 to +55ºC |
| Weight | Total 350g including standard 3m cable |
| Electrical: Switching voltage | 100 volts DC maximum |
| Electrical: Switching current | 0.5 Amps maximum |
| Electrical: Switch rating | 28 Watts maximum (DC resistive) |
| Electrical: Duty cycle | 50% + 5% up to 50m/s +-10% Up to 75m/s |
