Casella-cel Automatic weather station Instrukcja Użytkownika Pobierz pdf (Strona 20)

3.1.2 Humidity Sensor Specification

Sensor type: Capacitative

Measuring range: 0 - 100% RH

Calibrated accuracy: ±3% RH

Hysteresis: ±1%

Linearity: ±1.5% RH between 5% - 95% RH

Time constant: <10 s between 10% and 90% RH

Operating temperature: -25° to +80°C

3.1.3 Air Temperature & Humidity - Sensus Channel

Configurations

3.2 Wind Speed Sensor

The sensitive three cup anemometer is

mounted at one end of the cross-arm. The

rotational speed is monitored using an

infra-red light source, interrupter and optical

sensor that provides 20 pulses from 0 to 5 V

per revolution. This non-contacting design

can measure wind speeds up to 75 m/sec.

The instrument has an anodised

aluminium alloy outer case that offers a

durable, all-weather construction suitable for

installation in harsh environments.

An output from this sensor is led to

a terminal box on the sensor cross arm, from

where a single sensor cable is taken to the

7-pin socket on the bottom panel of the environmental case.

3.2.1 Wind Speed Sensor Specification

Part number: 178031C

Sensor type: Three cup anemometer

Transducer: Optical interrupter

Maximum wind speed: 75 m/s

Starting velocity: Typically 0.3 m/s

Distance constant: Typically 3.5 m/s

Time constant: Typically <0.5 s

Resolution: 7.84 cm

Non-linearity: <±0.6 %

Accuracy: ±0.3 m/s below 3 m/s

Standard Sensors

01057

Wind speed sensor

Page 20 of 34

Automatic Weather Station

Assembly & Commissioning Handbook

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 33 34

Komentarze do niniejszej Instrukcji

Brak uwag

Casella-cel Automatic weather station Instrukcja Użytkownika Strona 20

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Urządzenia pomiarowe Casella-cel Automatic weather station