Casella-cel Automatic weather station Manuale Utente Scaricare il pdf (Pagina 23)

Output calibration: Typically 100 µV/W/m², supplied with

individual calibration details

3.4.2 Solarimeter - Sensus Channel Configuration

3.4.3 Sunshine Duration

The Sensus Logger can determine daily Sunshine hour values. The accumulated

total is determined based upon the time during which the solarimeter has been

exposed to a radiation level exceeding a threshold of 200 W/m².

3.5 Standard Barometric Pressure Sensor

The weather station may be fitted with a

standard integral barometer mounted on a

circuit board in the data logger, which itself is

inside the environmental case. A 1 mm

ventilation hole in the case ensures the

internal pressure remains at ambient.

A monolithic silicon transducer

senses pressure by means of a silicon

diaphragm into which a “bridge” of piezo

resistors have been defused.

3.5.1 Standard Barometric Pressure Sensor Specification

Part number: 183014B

Transducer: The pressure sensor is temperature stabilised

at 60

Range: 800 to 1100 hPa (mB)

Operating temp: -40°Cto+85°C

Accuracy: <1 hPa (mB)

Temperature drift: Typically <0.15 mB/°C

Supply voltage: 9 - 12 V nominal

Power consumption: Approx. 10 mA at 12 V

Standard Sensors

The standard pressure sensor

board in the Sensus Logger

Page 23 of 34

Automatic Weather Station

Assembly & Commissioning Handbook

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Casella-cel Automatic weather station Manuale Utente Pagina 23