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The SITRANS LC500 User Interface
The SITRANS LC500 user interface consists of the display (LCD), the rotary switch, and
two push-buttons. The rotary switch enables you to select a particular item and/or
variable for read-out and/or adjustment: the push-buttons allow you to select and/or alter
a read-out or a value.
rotary switch
menu selector
RED (+) push-button
increment value
BLUE (–) push-button
decrement value
coaxial connector
probe connection
The LCD (display)
The seven-segment LCD (display) shows the value and/or diagnostic information. It is
mainly for numeric data, but there are also a number of indicators which use alphabetic
characters. A list of these LCD displays, together with the associated menu items, is
Appendix B: LCD display examples
shown in
left-most colon:
indicates value
accepted
(debounce time
passed)
The LCD will hold information for a long time even when not refreshed (for example, if
there is a loss of power). The heartbeat indicator blinks continuously whenever the
device is working. A still heartbeat signals that the device has stopped working.
Page 36
SITRANS LC500 – OPERATING INSTRUCTIONS
earth TAB
tank / vessel frame
measurement connection
left-arrow indicates Menu Level 10 to 1F
value MINUS sign (– )
left-most decimal point/heartbeat indicator (flashes twice
per second)
LCD
on page 75.
label
(protective
seal)
solid-state
switch relay
(any polarity)
current-loop
connection
(any polarity)
7ML19985GE04
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