Hewlett Packard 47804S PFT System – 1979

Hewlett-Packard 47804S PFT System 1979

State of the art for 1979. Built around a Fleisch pneumotachograph and included an HP desktop computer (with 24K of memory and a tape drive!).  It was capable of performing spirometry, DLCO and N2 washout tests.  It was only manufactured for a couple of years and was discontinued likely because very few units were sold. It was quite expensive for the time (totally equipped it was $53,175 in 1979 dollars). From “Automated pulmonary function measurements” by Maurice R. Blais and John L. Fanton, Hewlett-Packard Journal, September 1979, page 20.

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