Installation, Operation and Service Manual LKAT
2
+24V
© 2018 DynAmp, LLC Page 6
046404 E
• Extended Warranty
For permanently installed systems, the standard 2-year warranty can be extended in 2-year
increments. This must be ordered less than 6 months after the original LKAT system is
shipped.
2.2 ADDITIONAL MEASURING HEAD DETAIL
LKAT
2
Measuring Heads contain an arrangement of Hall Effect sensor ICs and signal
conditioning electronics. The tubular enclosure is constructed of flame retardant plastic with
an internal aluminum frame. Insulation from the bus is provided by the homogeneous
(sealed) construction of the head. In the event that the head enclosure components become
cracked, the bonding fails, or the weather-tight seal is broken in any way, a replacement head
must be substituted. The Measuring Head is not designed to be repaired.
LKAT
2
Measuring Heads are mounted on the bus bar using fiberglass angles positioned on
the corners of the bus bar and stainless steel bus bar mounting screws threaded into the
Measuring Head structure. Mounting hardware is supplied with each system. These screws
are adjusted to bus dimensions specified with each order. When properly installed, the
mounting hardware maintains the position of the Measuring Head in the event of temperature
fluctuation and / or bus vibration.
An interconnection cable assembly is integral to each half of the Measuring Head. Measuring
Heads with extra-long interconnection cables are also available - consult the factory for
details. Standard Measuring Head cable assemblies are terminated with keyed connectors to
ensure correct hookup. The interconnection cables from the Measuring Head are identified
as “A” and “B”. Connecting head cable “A” to Metering Unit “B” will not result in damage to
the head or electronics, but may degrade the calibration accuracy of the system.
2.3 ADDITIONAL METERING UNIT DETAIL
The Metering Unit electronics are housed in an environmentally rugged enclosure. The
enclosure cover must remain closed during normal operation.
The outside of the Metering Unit enclosure includes four receptacles for external connection
to the Measuring Head, the Metering Unit measurement signal(s) and relay outputs, and the
input of mains power. When properly mated with the associated cable assembly, these
connections are also environmentally protected.
Internally, all LKAT
2
Metering Units include both a Power Supply pc board and a Main pc
board. These 2 PC boards are mounted to a steel chassis which is then mounted on a steel
panel housed in the enclosure. The Metering Unit enclosure door has a window made of
clear polycarbonate. This allows the user to view various LED (or LCD) status indicators
while the door is closed. For more information, refer to the “Theory of Operation” section of
this manual.
There are two optional pc board assemblies that may be added onto the Main pc board in the
LKAT
2
Metering Unit:
• The Protection Extensions ( PE ) pc board assembly
• The Display pc board assembly.
One or both of these pc board assemblies may be added to an LKAT
2
Metering Unit in the
field. It is not mandatory that they be factory installed and/or calibrated. The optional pc
board assemblies may be calibrated on site, using the LKAT
2
Main Output as the reference
measurement.
To Next Page
Loading...
Need help?
General
