Level Detectors
OBJECTIVES
TERMINAL OBJECTIVE
1.0
Given a level instrument, RELATE the associated fundamental principles, including
possible failure modes, to that instrument.
ENABLING OBJECTIVES
1.1
IDENTIFY the principle of operation of the following types of level instrumentation:
a.
Gauge glass
b.
Ball float
c.
Chain float
d.
Magnetic bond
e.
Conductivity probe
f.
Differential pressure (DP)
1.2
EXPLAIN the process of density compensation in level detection systems to include:
a.
Why needed
b.
How accomplished
1.3
STATE the three reasons for using remote level indicators.
1.4
Given a basic block diagram of a differential pressure detector-type level instrument,
STATE the purpose of the following blocks:
a.
Differential pressure (D/P) transmitter
b.
Amplifier
c.
Indication
1.5
STATE the three environmental concerns which can affect the accuracy and reliability
of level detection instrumentation.
Rev. 0
Page v
IC-03
