Meteolabor - Model HG34 - Photometer - Brochure

The HG34 photometer measures the luminance of a horizontal surface using the light from the sky. When used in conjunction with an automatic weather station, the HG34 enables you to observe a cloud cover even at night. Ihe photometer functions with all intensities ranging from starlight to direct sunlight due to the silicon photoelement and built-in electronics.  Additionally, the temperature dependence of the silicon photoelement is compensated for. Since the photometer is housed in stainless steel, it is splash-proof and can be set up in the open.