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©2013 Technical Marine Service, Inc. LC-100 V2.97
from the bubbler pipe. In normal operation the LevelCom 100 automatically performs the
hardware zero at half hour intervals.
Horn: The LevelCom 100 is available with an optional piezoelectric horn for local alarm
indication. This provides a local alarm function, the ACK button is used to acknowledge
alarms and silence the horn.
Hot Menu: The hot menu is for use when the configuration will be password protected. It is
a configurable menu that allows certain parameters, like specific gravity, to be available to
operators who don’t have the password. This allows operators to change these parameters
as needed while protecting the rest of the configuration from tampering.
Hysteresis: A user-defined measurement between an Alarm Setpoint and the point the
alarm condition will automatically clear. For example, assume a tank has a Maximum Depth
of 10' 0”. The High Alarm Setpoint is 8' 0". High Hysteresis has been set at 0' 6". The level
in the tank must rise to 8' in order for the High Alarm to activate. The level must then drop to
7' 6" for the alarm to clear.
Latch: This is a function available in the Light and Horn output sections of the program.
Latch holds alarm outputs active, even if the alarm condition has cleared, until the user
presses the Acknowledge key.
Lights: Refers to the LevelCom 100 front panel Hi and Lo alarm and status LED indicators.
Local: The optional alarm relays can be configured for Local Acknowledge. In this case if
the relays are configured as alarm outputs the alarm output will clear when the ACK button is
pressed. Otherwise the relay will clear only when the alarm condition clears.
Menu: The LevelCom 100 configuration is organized as a series of menus. These menus
are organized to simplify the configuration process by grouping related parameters together.
The buttons on the machine front panel are used to navigate through the menus.
MENU button: The MENU button is the front panel button used to enter the LevelCom 100
configuration menus. The MENU button is also used to make selections and activate or
deactivate functions in the configuration. On older machines this button is labeled MODE.
Parameter: A parameter is a number used by the LevelCom 100 to calculate a display value
or to trigger an alarm. Parameters are set by the user to define the configuration of the
LevelCom 100. Maximum Depth and Bubbler to Bottom are parameters.
Password: The LevelCom 100 can be configured for password protection of the user’s
configuration. The password characters are the letters A-Z. As few as 1, and as many as 9
characters can be used in the password. The LevelCom 100 can be programmed with a Hot
Menu, which allows easy access to frequently used functions and parameters. The Hot
Menu is not password protected.
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