While I am stalled, waiting for access to a PAR meter, I've been thinking about the sensor part of the meter. Isn't that sensor just the photodiode mounted in something to hold it with the cosine diffuser over it? Can I buy another photodiode, the one mistergreen uses for his PAR meter, and package it, and use it in place of the sensor that came with my luxmeter? Obviously I don't know much about how these are hooked up.
If I did this, would it work?