American Magnetics 187 Self-Compensating Liquid Level Controller - Manual (Page 30)

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Operation
Menu Reference
If the (6& key is pressed once while entry is initiated, the entered
digits will be cleared and the cursor will remain for reentry of a new
desired value. If the
(6& key is depressed twice, the setting will
revert to the previous value and the entry is cancelled.
3.3.1.2 Menu Option Selection
Some menus may require the user to cycle through and select from
a list of predefined options. Such menus will display a
cursor
which indicates that a list of predefined options are
available from which to select. Pressing the 237,21 key moves the
cursor forward within the list. The value to which the cursor points
is the specified setting and is effective immediately upon selection.
3.3.1.3 Exiting Menus
Menus are exited by pressing the (6& key while no numerical
entry is in progress. The display will revert to the default display
(see paragraph 3.3 above).
3.3.2 HI Menu
Accessible by pressing the ‡+, key. The “HI” menu adjusts the HI
alarm level in the selected units. When the measured liquid level
exceeds the HI alarm, the HI LED on the front panel is energized
and a set of relay contacts are closed on the 9-pin D-sub connector
J8 on the rear panel (see the Appendix for the pinout). When the
level reaches or falls below the HI alarm, the LED is extinguished
and the relay contacts open.
The HI alarm may be set between 0.0% to 100.0%. The default
setting is 80.0%.
3.3.3 LO Menu
Accessible by pressing the ‡/2 key. The “LO” menu adjusts the
LO alarm level in the selected units. When the measured liquid
level falls below the LO setpoint, the LO LEVEL LED on the front
panel is energized and a set of relay contacts are closed on the 9-pin
D-sub connector J8 on the rear panel (see the Appendix for the
pinout). When the level reaches or exceeds the LO setpoint, the
LED is extinguished and the contacts open.
/HYHO
+L
/HYHO
/R