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PYRANOMETERS Delta Ohm manufactures First Class LP PYRA 02 and LP PYRA 12 and Second Class LP PYRA 03 pyranometers which fully comply with ISO 9060 standards, and meet the requirements defined by the World Meteorological Organization ( WMO) . These are strong and reliable ground-based instruments, especially designed to be used under all weather conditions. They are suitable for installation on the field. Technical Specification LP PYRA 02 / LP PYRA 12* LP PYRA 03 Typical sensitivity 10 ¼ V/ ( W/ m2) Impedance 33 © ÷ 45 © Measuring range 0 ÷ 2000 W/ m2 Viewing field 2À sr Spectral field 305 nm ÷ 2800 nm W/ m2 ( 50% ) Operating temperature -40 ° C ÷ 80 ° C Working temperature 0.90 Kg 0. 45 Kg ISO 9060 Specifications Response time < 28 sec < 30sec Zero Off-set a) Response to thermal radiation ( 200Wm-2) 15 W/ m2 25 W/ m2 b) Response to temperature change 5K/ h