Instrumentation and control personnel shall demonstrate a working level knowledge of the
characteristics and applications of electrical components used in instrumentation and
Supporting Knowledge and/or Skills
Discuss the various methods through which a supply voltage is converted and/or reduced
for use in an electronic circuit.
Given a schematic diagram of a typical instrumentation and control circuit, identify each
of the following electrical components in the circuit and discuss its function, parameters,
and rating as applicable:
Discuss the application of the various types of circuit breakers and fuses used in the
power supplies to instrumentation and control circuits. Include in this discussion the
circuit requirements for the sizing, ratings, and characteristics of these power-interrupting
Describe how different types of relays are used in instrumentation and control circuits to
accomplish the following functions. Include in the discussion the relay characteristics
required for each application.
Describe the methods and devices used in instrumentation and control circuits to provide
for protection against electrical transients.
Identify and discuss the use of electrical test equipment used to troubleshoot and analyze
instrumentation and control circuit performance.
Describe the requirements for electrical safety class systems.
Discuss the factors to be considered when selecting electrical components for use in
instrumentation and control circuits. Include in the discussion any consideration that must
be given to the environment in which the circuit is required to perform its design
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