Renewable Energy Systems are designed to take benefit of the outdoor
natural conditions. Their efficiency and long life depend on them (air flow, air velocity,
solar radiation, temperature etc.). Continuous monitoring of outdoor natural qualities is
essential for optimizing operation, preventing small and large scale damages and
adapting design according local conditions. Common requirement for such applications
is saving data for a long period of time and/or the ability to send them on line. This is
why most of the instrumentation presented in this chapter is based on transducers: Flow
transducers, temperature transducers, solar radiation transducers, humidity transducers,
etc.
Keywords: Hot Wire Anemometer, Hygrometer, Magnetic Flowmeter, Nozzle
Meter, Orifice Meter, Pitot Tube, Pyranometer, Pyrheliometer, Psychrometer,
Rotameter, Resistance Temperature Detector, Turbine Flowmeters, Thermistor,
Thermocouple, Venturi Meter, Vortex Shedding Flowmeter.