This paper presents the design, construction and testing of an instrumentation
system for temperature measurement in PV facilities on a per-panel scale (i.e., one or more
temperature measurements per panel). Its main characteristics are: precision, ease of
connection, immunity to noise, remote operation, easy scaling; and all of this at a very low
cost. The paper discusses the advantages of temperature measurements in PV facilities on a
per-panel scale. The paper presents the whole development to implementation of a real
system that is being tested in an actual facility. This has enabled the authors to provide the
readers with practical guidelines, which would be very difficult to achieve if the
developments were implemented by just simulation or in a theoretical way. The
instrumentation system is fully developed, from the temperature sensing to its presentation
in a virtual instrument. The developed instrumentation system is able to work both locally
and remotely connected to both wired and wireless network.