Installation, Operation and Service Manual LKP Series
© 2020 DynAmp, LLC Page 7
041736 N
4. INSTALLATION
4.1 HANDLING PRECAUTIONS
Even though the LKP Series systems are large and rugged, they should be handled with
the same care as any precision measuring instrument. Larger Measuring Heads are quite
heavy, and adequate handling equipment must be available. Severe jolts or bumps to the
Measuring Head or Metering Unit may cause movement of internal parts, and possibly a
malfunction. It is also advisable to avoid supporting the Measuring Head-halves by the
windows insulation. The window insulation is tough, but brittle. Personnel involved in the
installation should be experienced with equipment of similar size and weight. They
should also be familiar with the technical terms, warnings, and instructions in this
manual, and all plant safety rules, and be able to follow these.
The complete system should be inspected for shipping damage at the earliest opportunity.
Visible damage must be reported to the carrier immediately. Concealed damage (not
evident until the system is operated) must be reported to DynAmp, LLC immediately.
4.2 MAGNETIC CONSIDERATIONS: MEASURING HEAD
The LKP metering systems are designed and built for accuracy, stability, and reliability.
However, these factors may be adversely affected by the arbitrary location of the
Measuring Head without regard for magnetic fields. Secondary magnetic fields emanating
from angled sections of the bus being monitored or from other nearby buses may cause
overheating. Currents from other buses produce magnetic fields, which can sometimes
cause zero offsets and errors at low current levels. To guard against these problems, a
computer analysis of the bus system should be performed. If a bus analysis is not feasible,
the guidelines presented this section can be used as a starting point.
FREE BUS ANALYSIS
The general guidelines below should be applied only when a detailed analysis of your
bus system is not available. DynAmp, LLC will perform one detailed computer analysis
of the proposed location of the Measuring Heads within your bus system at no charge.
Generally, this is done before or at the time the unit is ordered. In this way, you are
assured that your LKP system will function properly.
Whenever possible, the Measuring Head should be installed on the longest straight run of
the bus that is available in an area free of other bus structures. General guidelines
requiring consideration when installing a Measuring Head are shown in figure 4.1
(guidelines illustrated are to be considered as the minimum required distances). If the
proposed Measuring Head location can be physically described by more than one of the
diagrams (figure 4.1), a bus analysis should be performed. For the guidelines of figure 4.1
to apply, the bus height-to-width ratio should equal the Measuring Head aperture height-to-
width ratio, within ±10%. This ratio does not affect the accuracy of the measurement, but it
does affect the loading of different sections of the Measuring Head.
a = maximum aperture dimension
To Next Page
Loading...