ABB LMT Series Operating Instruction page 33

L M T 1 0 0 A N D L M T 2 0 0 | M A G N E TO S T R I C T I V E L E V E L T R A N S M I T T E R S | F F O I/ L M T 1 0 0/ 2 0 0/ F F - E N R E V. A
Level Unit
The Level Unit option allows the user to select the unit of
measurement for the level measurement This unit of
measurement then provides a basis for all setup functions
Selectable engineering units include: inches, feet, meters,
centimeters and millimeters Note that depending on device
settings, Level Unit may also display as Volume Unit or Flow
Unit
Level LRV
The Level LRV (lower range value) is the configuration for the
lowest value, measured in engineering units, at which LMT
transmitters will generate output LRV is also referred to as the
zero point LRV is set to zero from the factory Note that
depending on device settings, Level LRV may also display as
Volume Level LRV or Flow LRV
Level URV
The Level URV (upper range value) is the configuration for the
highest value, measured in engineering units, at which LMT
transmitters will generate output This is generally known as
the span point Note that depending on device settings, Level
URV may also display as Volume Level URV or Flow URV
IMPORTANT (NOTE)
If the device is configured with two levels, two further
parameters will be included in the Easy Setup menu Depending
on the device configuration, these will be one of the following
combinations:
• Interface Level LRV and Interface Level URV
• Volume Interface LRV and Volume Interface URV
The interface LRV and URV define the lower and upper values at
which LMT transmitters will generate interface measurement
output
Level Damping Time
Damping is a setting designed to delay the output response to
a change in the measured level If the process is agitated or
splashing of the liquid is a possibility, a higher damping value
may be required If the process changes rapidly, a lower
damping value may be needed to improve the response time to
a level change The highest damping value allowable is 60
seconds
Display 1 Line1 View
The display line can be set to Raw Level, Distance/Ullage and
Level If the device is configured for two levels, it can also be set
to Interface The graph can be set to display % span or % mA
value
Tag
The tag parameter is the final step in Easy Setup It allows the
operator to add the device tag or another memo in the device
tag menu
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