Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

Verify the reputation of the people installing your system
run regular simulated tests using TARP (testing of Applications Recovery Planes)
do not allow unbonded service people to work on your equipment
None of these
do not leave training manuals unsecured

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Automation System
What is offset error?

None of these
the difference between the controller output and the setting of the manipulated variable.
the difference between the control setpoint value and the actual value.
All of these
the difference between the sensor input and the absolute sensed parameter.

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Automation System
The use of specialized workstations:

reduces the host computer workload
reduces the host computer workload and allows more users
None of these
has a high cost-performance tradeoff
provides limited growth potentials for 3-D

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Automation System
Light sensors:

never use infrared light as light source
None of these
cannot be used a s limit switches.
come in a wide variety of mounting styles
work in direct sunlight

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