Why do you need a driver for basic serial communications? Use VISA serial read/writes, that's pretty basic. Some meters steam data continously, then all you have to do decode and parse the read data. Here's an example, but does not have the range you need:
http://www.weschler.com/_upload/sitepdfs/misc/MD3000_data.pdf
-AK2DM
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"It’s the questions that drive us.”
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