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Robert E Bogner writes to the sowacs list: ===8<============== Tom, I searched Google for keywords: watermark delmhorst calibration From the results I found the following to be of interest. Delmhorst calibration data are in: ftp://ftp.campbellsci.com/pub/outgoing/manuals/223.pdf Watermark calibration formulae are at Section 4 in ftp://ftp.campbellsci.com/pub/outgoing/manuals/253.pdf Also see: Changes to Optional Gypsum Block Soil Moisture Protocol http://www.hwr.arizona.edu/globe/train/smchanges.html Yours sincerely, Robert Bogner Bruce -owner of sowacs wrote: > > Tom Thomson writes to the sowacs list: > ===8<============== > I use Delmhorst blocks for annual crops like corn and beans and Watermarks > for perennials. My Delmhorst meter is nearing its lifes end and I hate to > have to buy another especially since I have a new Watermark meter. I read > the blocks with the Watermark meter and there appears to be a pretty good > correlation in the midrange but less so at the dry end. I was wondering if > there is a utility out there to convert Watermark readings to Delmhorst > readings??? > > Thanks for the time....Tom > > ===================================================== > Tom Thomson Northwest Agricultural Consulting > 1275 Oak Villa Road tomt@teleport.com > Dallas, Oregon 97338 Phone/FAX 503-623-0468 > ==================================================== ===8<============== NOTE: To get off this list, send an email to list@sowacs.com with the subject line: unsubscribe_sowacs For full instructions see this page: <http://www.sowacs.com/subscribe/index.html>