16
Audible and Visual Alarms
1.
“LOW LEVEL” indicator light flashes on and
off when 2" of liquid nitrogen remains inside
the LOCATOR or LOCATOR Plus vessel. In
this situation, the level of liquid nitrogen is
low, and you are alerted to refill the vessel as
soon as possible.
2.
An AUDIBLE alarm will sound intermittently
when 1" of liquid nitrogen remains inside the
LOCATOR or LOCATOR Plus vessel. The
“LOW LEVEL” light described above will con-
tinue to flash as well. In this situation, the liq-
uid nitrogen is dangerously low, and you are
alerted to refill the vessel immediately.
3.
The 5 segment LED display becomes lit and
an audible alarm sounds continuously when
the LOCATOR or LOCATOR Plus vessel has
no more liquid nitrogen or if the level inside
the vessel is falling at a rate of 1/2" per hour
or more. In this situation, you are alerted that
an emergency exists. Either there is no more
liquid nitrogen inside the LOCATOR or
LOCATOR Plus vessel, or the level of liquid
nitrogen is dropping rapidly, due to a vacuum
failure of the LOCATOR or LOCATOR Plus
vessel.
Safety Feature
A “RESET” switch lights and an audible alarm sounds
intermittently if the user does not reset the monitor after
removing vessel cover. The microprocessor must be
reset each time the cover is removed from the LOCA-
TOR or LOCATOR Plus.
Before removing the cover, the RESET button must
be pushed
, illuminating the RESET light. While in this
reset/hold mode, the monitor is not sensing. After five
minutes in the reset/hold mode, an audible alarm will
sound, alerting you to deactivate the reset/hold mode
and replace the cover on the vessel.
A
CCESSORY
L
IQUID
N
ITROGEN
L
EVEL
M
ONITOR
O
PERATION
