Water Treatment Plant Operation Volume 2 - Chapter 7 Instrumentation and Control
Systems
, What is the difference between the Offset
desired value of a variable and
the controlled (actual) value?
What type
What are ofmost
the maintenance
common do Corrective
Pressure, level, and flow
operators
variables measuredmost
perform often on
in water
instrumentation
treatment? and control
components?
What is the best way to obtain Request copies from the manufacturer
Which
copies system element converts
of the technical manual Transducers
afor
sensor's minute actions into a
an instrument?
usable indication or signal?
What kind of information Quantitative data
do instrumentation
measurements provide
operators with?
How do most pressure sensor By preventing water hammer
protection devices function?
Why are oxygen concentrations Speed up combustion
above 23.5 percent dangerous?
What is the nerve center of the Computer control system
water treatment plant?
What type of analysis of Continuous
chemical and physical indicators
of process variables does process
instrumentation provide?
What does the specific gravity of a Weight, as compared to an equal volume of air
gas tell us about it?
What is a hazard unique to High-pressure air
working with and around
pneumatic instrumentation?
What is one common problem Scum or caking accumulating on the rods
often encountered with
submerged probes?
What problem does a steady alarm Alarm has been acknowledged but the underlying problem is not yet fixed
signal that is not blinking
indicate?
What is the key to proper O&M of Operator understanding of the system
an instrumentation system?
Where is oxygen deficiency most in areas installed below grade
likely to occur?
How should an operator purge a Run the automated clean-in-place system
line of moisture after inspection
or repair?
What does a pink color indicate It is exhausted
about the moisture-absorbent
capacity of the silica gel
desiccant in a sealed instrument
case?
What does an unusual quantity Failure in instrument air filter/drying parts
of liquid drainage from the
Systems
, What is the difference between the Offset
desired value of a variable and
the controlled (actual) value?
What type
What are ofmost
the maintenance
common do Corrective
Pressure, level, and flow
operators
variables measuredmost
perform often on
in water
instrumentation
treatment? and control
components?
What is the best way to obtain Request copies from the manufacturer
Which
copies system element converts
of the technical manual Transducers
afor
sensor's minute actions into a
an instrument?
usable indication or signal?
What kind of information Quantitative data
do instrumentation
measurements provide
operators with?
How do most pressure sensor By preventing water hammer
protection devices function?
Why are oxygen concentrations Speed up combustion
above 23.5 percent dangerous?
What is the nerve center of the Computer control system
water treatment plant?
What type of analysis of Continuous
chemical and physical indicators
of process variables does process
instrumentation provide?
What does the specific gravity of a Weight, as compared to an equal volume of air
gas tell us about it?
What is a hazard unique to High-pressure air
working with and around
pneumatic instrumentation?
What is one common problem Scum or caking accumulating on the rods
often encountered with
submerged probes?
What problem does a steady alarm Alarm has been acknowledged but the underlying problem is not yet fixed
signal that is not blinking
indicate?
What is the key to proper O&M of Operator understanding of the system
an instrumentation system?
Where is oxygen deficiency most in areas installed below grade
likely to occur?
How should an operator purge a Run the automated clean-in-place system
line of moisture after inspection
or repair?
What does a pink color indicate It is exhausted
about the moisture-absorbent
capacity of the silica gel
desiccant in a sealed instrument
case?
What does an unusual quantity Failure in instrument air filter/drying parts
of liquid drainage from the
