Flow Detectors
OBJECTIVES
TERMINAL OBJECTIVE
1.0
Given a flow instrument, RELATE the associated fundamental principles, including
possible failure modes, to that instrument.
ENABLING OBJECTIVES
1.1
EXPLAIN the theory of operation of a basic head flow meter.
1.2
DESCRIBE the basic construction of the following types of head flow detectors:
a.
Orifice plates
b.
Venturi tube
c.
Dall flow tube
d.
Pitot tube
1.3
DESCRIBE the following types of mechanical flow detectors, including the basic
construction and theory of operation.
a.
Rotameter
b.
Nutating Disk
1.4
DESCRIBE density compensation of a steam flow instrument to include the reason
density compensation is required and the parameters used.
1.5
Given a block diagram of a typical flow detection device, STATE the purpose of the
following blocks:
a.
Differential pressure (DP) transmitter
b.
Extractor
c.
Indicator
1.6
STATE the three environmental concerns which can affect the accuracy and reliability
of flow sensing instrumentation.
Rev. 0
Page v
IC-04
