RT Journal Article T1 A New and Inexpensive Pyranometer for the Visible Spectral Range A1 Martínez Bohórquez, Miguel Ángel A1 Andújar Márquez, José Manuel A1 Enrique Gómez, Juan Manuel AB This paper presents the design, construction and testing of a new photodiode-based pyranometer for the visible spectral range (approx. 400 to 750 nm), whose principal characteristics are: accuracy, ease of connection, immunity to noise, remote programming and operation, interior temperature regulation, cosine error minimisation and all this at a very low cost, tens of times lower than that of commercial thermopile-based devices. This new photodiode-based pyranometer overcomes traditional problems in this type of device and offers similar characteristics to those of thermopile-based pyranometers and, therefore, can be used in any installation where reliable measurement of solar irradiance is necessary, especially in those where cost is a deciding factor in the choice of a meter. This new pyranometer has been registered in the Spanish Patent and Trademark Office under the number P200703162. PB MDPI SN 1424-8220 YR 2009 FD 2009 LK http://hdl.handle.net/10272/14239 UL http://hdl.handle.net/10272/14239 LA eng NO Martínez, M. A., Andújar, J. M., & Enrique, J. M. (2009). A New and Inexpensive Pyranometer for the Visible Spectral Range. Sensors (Basel, Switzerland), 9(6), 4615–4634. http://doi.org/10.3390/s90604615 DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026