SUNSHINE DURATION SENSOR
The SD4 Sunshine Sensor indicates the time the disk of the sun is not obscured by clouds.
SD4: $2130 AUD
Available: 3 weeks
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Four identical omni-directional sensors under a hemispherical shading canopy.
Embedded microcontroller executes a sophisticated contrast-evaluation algorithm to accurately discriminate direct sunshine from diffuse sunlight.
|
Performance Specification |
WMO recommended |
SD4 |
|
sunshine duration uncertainty |
± 0.1 hour |
< ± 0.1 hour |
|
sunshine duration resolution |
0.1 hour |
0.02hr (0.01hr option) |
|
sunshine threshold (direct solar irradiance) |
120 W.m-2 ± 20% |
120 W.m-2 ± 15% |
|
unobstructed view of sun above horizon |
> 3° |
> 3° |
EASY TO USE, RELIABLE, ACCURATE, FULLY
ELECTRONIC
Excellent performance even in difficult bright-cloud conditions.
Fully sealed, with a glass dome to protect the sensors.
Simple high/low output is used to indicate sunshine/no sunshine.
Operates at any latitude & longitude, and does not require alignment.
Marine-grade aluminium, hard anodised, for corrosion resistance.
Compact size and light weight.