What is the bandwidth of a pyranometer?
The bandwidth of most pyranometers is 310 to 2800 nm. This covers the full solar spectrum as shown below. There are some exceptions: • CMP22 has a bandwidth of 200-3600nm (Quartz glass ) • SP Lite has a bandwidth of 400-1100nm (silicon photo diode) In our PV application the cable from the CMP 11 (50 meters) will go along other cables that come from the PV panels in which there is a DC voltage and around 100 Amps. Will these cables affect the measurement? The disturbance on the cables on the CMP 11 is difficult to judge from a distance. A test would give the best criteria in this case. Simply cover the CMP 11 so it is fully dark (in box with cloth etc.) Log the data over a period that disturbance is expected, at least one day. If the data is zero no problem is to be expected. Do you have filters that can be used to verify spectral distribution over the following wave lengths? Ultraviolet – B 280-320 Ultraviolet – A 320-360 and 360-400 Visible 400-520, 520-640 and 640-800 Infrared 800-30
