Yankee Environmental Systems, Inc. Total Solar Pyranometer TSP-700

The Model TSP-700 Total Solar Pyranometer represents the state-of-the-art for field measurement of broadband global (direct and diffuse) solar irradiance. It is ruggedly packaged and designed for long-term field use. When properly characterized, it meets or exceeds the World Meteorological Organization's (WMO) requirements for a high quality pyranometer (previous called a secondary standard). YES introduced space-age technology and materials to the TSP-700 thermal design to produce a precision radiation receiving and measuring system that exceeds the performance of all other pyranometers on the market. It retains the basic principle of total solar radiation measurement, that is, relating the incident irradiance to the temperature difference between a radiation receiver and a shielded thermal reference. However, unlike other pyranometers, it uses a rugged solar radiation-receiving surface that is thermally bonded to modern thin-film platinum resistance thermometers (PRTs) to make the actual temperature measurements. Every TSP-700 is ventilated and heated to minimize the effects of changes in atmospheric temperature and to eliminate dome dew formation. Three levels of heating are provided for dew removal depending on site requirements.