Automation System
An aneroid barometer

can measure only atmospheric pressure
can be used to measure gas or liquid flow rates
is very unreliable
measures pressure by sensing deflection of an evacuated chambers.
None of these

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Automation System
Microcomputer-based control sys-tems

will have more standard industrial application software available in the future.
All of these
None of these
will just keep their present capability
will tend to increase in cost.

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