Casella-cel Automatic weather station Uživatelský manuál stáhnout pdf (Strana 21)

±3% over 3 m/s

Output calibration: 12.75 Hz/m/s

Output: 20 pulses per revolution 0 to 5 V

Operating temp: -20°Cto+70°C

Stabilisation time: <1 sec from power on

Supply voltage: 6 - 28 V DC (supplied from environmental

case)

Power consumption: 3 mA

3.2.2 Wind Speed Sensor - Sensus Channel Configuration

3.3 Wind Direction Sensor

The weather vane is mounted at the other

end of the cross-arm from the anemometer.

DO NOT loosen the fitting of the

weather vane, as this carries a guide

mark two “dots” or an “N” that must

point north to orient the cross arm

correctly.

The wind vane is a small

lightweight GMR design that offers a rapid

response to changes in wind direction with

virtually friction free sensing. The analog

output changes from 0 to 1.8 V as the wind

direction changes from 0 to 359°,withno

dead-band at north.

The instrument has an anodised

aluminium alloy outer case that offers a durable all-weather construction suitable

for installation in harsh environments.

3.3.1 Wind Direction Sensor Specification

Part number: 178035C

Sensor type: Weather vane

Transducer: GMR (giant magneto resistive sensor) solid

state system with micro-controller

Maximum wind speed: 75 m/s

Resolution: 1°

Accuracy: <±2°

Aligning threshold: <0.8 m/s for a 10° offset

Damping ratio: 0.25

Distance constant: Typically 3.0 m

Standard Sensors

01058

Wind direction sensor

Page 21 of 34

Automatic Weather Station

Assembly & Commissioning Handbook

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 33 34

Komentáře k této Příručce

Žádné komentáře

Casella-cel Automatic weather station Uživatelský manuál Strana 21

Komentáře k této Příručce

Související produkty a manuály pro Měřící nástroje Casella-cel Automatic weather station