Position Indicators
OBJECTIVES
TERMINAL OBJECTIVE
1.0
Given a position indicating instrument, RELATE the associated fundamental principles,
including possible failure modes, to that instrument.
ENABLING OBJECTIVES
1.1
DESCRIBE the synchro position indicators to include the basic construction and theory
of operation.
1.2
DESCRIBE the following switch position indicators to include basic construction and
theory of operation.
a.
Limit switches
b.
Reed switches
1.3
DESCRIBE the following variable output position indicators to include basic construction
and theory of operation.
a.
Potentiometer
b.
Linear variable differential transformers (LVDT)
1.4
Given a diagram of a position indicator, STATE the purpose of the following
components:
a.
Detection device
b.
Indicator and control circuits
1.5
STATE the two environmental concerns that can affect the accuracy and reliabiltity of
position indication equipment.
Rev. 0
Page v
IC-05
