I built a shield with the quartz panel as well. Tomorrow I will install the sensor in the middle of Costaflores Organic Vineyard, in Mendoza, Argentina.
BTW, The data we are collecting with the WeatherPi, along with Vinduino soil moisture data (and now the sunlight sensor) is written directly to the Ethereum blockchain. We do this as part of a strategy to "self-certify" our grapes as organic.
I see that this sensor is discontinued...is there a better sensor I should be using?