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6450 -- Solar Radiation Sensor

Category: WEATHER

Model: Optional Sensors

Avaibility: AVAILABLE

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Measures solar radiation for evapotranspiration (ET) and Temperature/Humidity/Sun/Wind (THSW) Index.

General

Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to +150° F (-40° to +65° C)

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . -50° to +158°F (-45° to +70°C)

Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Silicon photodiode

Spectral Response (10% points) . . . . . . . . . . . . . . . . . . . 400 to 1100 nanometers Cosine Response

Percent of Reading . . . . . . . . . . . . . . . . . . . . . . . . . ±3% (0° to ±70° incident angle); ±10% (±70° to ±85° incident angle)

Percent of Full Scale . . . . . . . . . . . . . . . . . . . . . . . . ±2% (0° to ±90°)

Supplied Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . 2' (0.6 m)

Cable Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-conductor, 26 AWG

Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modular RJ-11

I/O Specifications

Green wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output (0 to +3VDC); 1.67 mV per W/m2

Red & Black wires . . . . . . . . . . . . . . . . . . . . . . . . . . Ground

Yellow wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3 VDC ±10%; 1mA (typical)

Temperature Coefficient . . . . . . . . . . . . . . . . . . . . . . . . . +0.067% per °F (+ 0.12% per °C)

Reference temperature . . . . . . . . . . . . . . . . . . . . . . 77°F (25°C)

Correction per degree above reference temp . . . . . . -0.067% of reading per °F (-0.12% per °C)

Correction per degree below reference temp . . . . . . +0.067% of reading per °F (+0.12% per °C)

Housing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UV-resistant PVC plastic

Dimensions (Length x Width x Height) . . . . . . . . . . . . . . . 2.00” x 2.75” x 2.25” (51 mm x 70 mm x 57 mm)

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 lbs. (226 g)

Sensor Output

Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W/m2

Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 1800 W/m2

Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5% of full scale (Reference: Eppley PSP at 1000 W/m2) plus

45 W/m2 per 100' (30 m) of additional cable

Drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to ±2% per year

Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 seconds to 1 minute (5 minutes when dark)

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