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Hello,

I'm trying to use a solarimeter (thermopile) to measure the direct flux of solar radiation, in clear conditions, over varying solar zenith angles. The equipment has an output of volts, but I need to convert this to Lux and then convert this to watts per meter squared.

How can I go about doing this as my light source has a mix of different wavelengths?

I have also read that I can calculate the number of lumens per watt by using the luminosity function, but how could I get Watts per meter squared from this?

Thank you.

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# Homework Help: Converting Volt to Lux using a solarimeter

Can you offer guidance or do you also need help?

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