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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.

 SD4

Performance Specification

WMO recommended

SD4

sunshine duration uncertainity

± 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.