Hi,
Thanks for that information which is very interesting. I haven't read through all the links, but IMHO some of that information is not relevant to Meteorological measurements. For example, it appears that car (aircon) sensors are designed to have an increased horizontal response (corresponding to light/heat coming in through the windows), whilst a meteorological sensor has a "Cosine" response (which has a zero horizontal response).
Beware that that listing is for a "BH" suffix version which includes an IR filter. As far as I'm aware, Meteorological sensors are designed to peak in the (near) Infra Red region because about half of the insolation (watts/m2) is actually received in the Infra Red range.
Cheers, Alan.
Thanks for that information which is very interesting. I haven't read through all the links, but IMHO some of that information is not relevant to Meteorological measurements. For example, it appears that car (aircon) sensors are designed to have an increased horizontal response (corresponding to light/heat coming in through the windows), whilst a meteorological sensor has a "Cosine" response (which has a zero horizontal response).
(30-05-2015, 10:14)JT118 Wrote: VTB8440 photodiode £5.10 (nearest spec I could find to old version above. http://www.ebay.co.uk/itm/VTB8440BH-Phot...0873564672
Beware that that listing is for a "BH" suffix version which includes an IR filter. As far as I'm aware, Meteorological sensors are designed to peak in the (near) Infra Red region because about half of the insolation (watts/m2) is actually received in the Infra Red range.
Cheers, Alan.