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DAVID W. SPITZER'S E-ZINE

TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS

This issue sponsored by Endress+Hauser

February 2010

Fieldbus Technology (Part 2 of 5)

HART was an interim development in the late 1980's stemming from the original SP50 work on Fieldbus for suppliers to retain the 4-20mA analog transmission and conduct a digital data exchange in the same two-wire loop. Technology at the time restricted the data rate to 1200 bps when the analog signal was present. click for more...

What Do We 'Know'
Revelations in Flowmeter Straight-Run Effects

Sometimes we "know" things that are not true. click for more...

Know Flow with No Flowmeter

There are times when there is no flowmeter installed, but it is necessary to determine the flow through a pipe. click for more...

 

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