______compensate for temperature fluctuations in a control loop.
_______ tubing is corrosion-resistant and suitable for high-temperature, high-pressure applications.
_____ achieve a tight seal by forcing the flared edge of the tubing up against the tapered end of the fitting body.
Leak detector fluid is essential when trying to locate leaks in instrument connections
Metals that are to be soldered must be thoroughly cleaned ______ flux is applied.
Flux and discoloration may be removed from the fitting after a joint has been made using?
Emery cloths and wire brushes
the preferred cutting tools for stainless steel tubing are
______ are good tools for removing dirt, oil, and other residue from fittings and tubing before solder is applied.
Emery cloths and lint-free cloths
the materials of which mechanical seals are made must be _____ with the process materials of the applications in which they are used.
Bends require ______ tubing than square corners.
the wall thickness of tubing is determined by its
Inside and outside diameters
_______ tubing may be found as a single tube or as a bundle of single tubes within a protective sheath.
flux residue can cause stainless steel tubing to
applications in which pneumatic signals must be carried between instruments commonly use
plastic tubing and stainless steel tubing
compression fittings are commonly found on
metal tubing and plastic tubing
flared fittings are limited to use on
leak detector fluid is usually not required to check for ____ leaks.
_____ provide a seal between flat mating surfaces.
the gauge of a wire is determined by the ____ of the conductor.
according to Ohm's law, if the voltage remains constant and resistance, current will
a good solder joint should be
metal bubbling up from the _____ in a coaxial cable connector indicates that the joint is solid
instrument signals passing through lines of flux from high-voltage equipment may be
distorted, lost, and interrupted
instrument grounds protect electronic signals from
every electrical connection should be tested for ______ after any installation or repair work is done.
it is essential to ______ before beginning any work on a circuit in the field.
verify the circuit de-energized
with coaxial cable connectors, the cable shield is usually inserted through a hole in the ________
check ______ terminal connections from the point at which te lost signal symptom appears
the voltage rating of a wire is determine by the ______ of the conductor
according to Ohm's law if voltage remains constant and resistance decreases, current will
a poor solder joint will be
dull and grainy
metal bubbling up from the access hole in a coaxial cable connector indicates that the joint is
_______ is used to protect instrument signals passing through lines of flux from high-voltage equipment from being distorted or lost
grounding a shielded cable at ______ can create a ground loop.
_____ tests should be done on every electrical connection after any installation or repair work is done.
when verifying that a circuit is de-energized, it is important to test the operation of the multimeter _______ testing the circuit.
before and after
when installing a coaxial cable connector, the ________ is usually inserted through a hold in the grounding tab
check sequential terminal connections from the point at which the lost signal symptom appears for _________
all of the above
_______ is the difference between the actual value of the measured variable and the value of the variable indicated by the instrument
factors that should always be considered when analyzing an instrument's accuracy rating are _______ and _______.
rangeability and mounting position
errors that can be observed on a calibration curve or input/output graph include _____, _____, _____, and _____.
zero shift, hysteresis, span error, and non-linearity
characteristics that affect an instrument's accuracy in terms of the manufacturer's accuracy rating include dead band, linearity, ________, and ________.
repeatability and hysteresis
position errors may be caused by
calibrating in position different from installation position, and mechanical deformation of instrument
in order to permit the observation of linearity apart from the phenomena of hysteresis and dead band, it is necessary to plot and ______ curve.
_________ is the closeness of agreement among several consecutive measurements of an instrument's output values
errors in interpretation may be caused by
instrument errors that can usually be corrected during calibration include
none of the above
an instrument is _______ if it is capable of consistently providing repeatable values for a given input
errors in _______ may be caused by misreading the value of scale subdivisions or incorrectly estimating reading in which pointer is located between divisions or subdivisions
on an input/output graph, a zero shift line
all of the above
linearity is expressed as a
percent of output
with ______ , the response of the sensing element does not catch up to the input signal until the upper or lower ranges of the instrument are approached
the smallest change in a measured variable to which an instrument will respond is a characteristic known as
on an input/output graph, ______ is represented as a straight line that is at a different angle than the ideal line.
with _______ , all of the output reading are either consistently high or consistently low throughout the entire range
_______ is the ratio of the maximum to the minimum value of a measured variable that an instrument can measure within state accuracy to the minimum value of the measured variable that it can measure with state accuracy
an instrument's repeatability is expressed as
percentage of output span
________ is the ration of the instrument's maximum full scale range to its minimum full scale range.
which of the following instrument errors can generally be adjusted
zero shift and span error
which of these occurrences normally requires that an instrument should be recalibrated?
what is the signal range of an analog electronic pressure transmitter?
which of the following is the first step in a good calibration procedure
determination of signal range
the proper formula used to determine the accuracy of a temperature transmitter is:
Accuracy: (Deviation/Signal Span) x 100
gain is a function of:
in looking for indications of hysteresis, it is essential to:
take upscale and downscale readings
the accurate measurement and comparison of an instrument's inputs and outputs to a known standard is a definition of:
the most accurate standards are those with the _______ tolerances.
_______ standards use physical properties of matter and physical laws to provide a standard for comparison.
calibration certification facilities use standards from ______ to calibrate their standards
primary pressure standards
manometers can indicate pressures in
all of the above
in order to obtain a measurement from a U-tube manometer, it is necessary to read ______.
to ensure accurate calibrations, gloves should be worn when handling the ______ used with deadweight testers.
when selecting piston/cylinder assemblies, it is good practice to choose the ______ available tester range that includes the pressure range of the instrument to be calibrated.
the operating fluid in pneumatic testers is a
in a pneumatic deadweight tester, the pressure balance point is achieved by forces acting on a ______ assembly
ball and nozzle
the least accurate standards are those with the ______ tolerances.
_______ standards are extremely precise instruments used for the calibration of plant instruments and systems.
calibration certification facilities provide standards for ________ to use to calibrate their standards.
in a U-tube manometer, the reference level is the term used to describe the level apparent when pressure is _________.
not being applied
the ______ is the curve of the fill fluid level.
A(n) _______ manometer is designed to provide greater accuracy for measuring small pressure changes
______ are sets consisting of precision parts that are not interchangeable with components in other sets.
cylinders and weight systems
flushing the connection before connecting the test instrument to be calibrated to a hydraulic deadweight tester's instrument connection port ensures that there are no _______ in the system.
the operating fluid in hydraulic testers is a
liquid and oil
in a hydraulic deadweight tester, the pressure balance point is achieved by forces acting on a _______ assembly.