ENMET QUADRANT - Manual (Page 15)

QUADRANT ENMET Corporation
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3.3 Low battery alarm
When the battery approaches depletion and approximately 30 minutes use time remain, a
pulsating alarm sounds, the battery status display reads “DISCH”, and the audible and
visual alarms are acknowledgeable.
When the battery energy level is critically low, and battery failure is imminent, the
battery status display reads “DISCH”, and the instrument is in continuous visual and
audible alarm. The audible alarm is acknowledgeable but the visual is not. Recharge the
battery.
QUADRANT Instruments contain either a NiCAD or a NiMH battery. Charge bases are
not interchangeable. Be sure to place the instrument into the proper charging base.
Instruments and charge base with ATEX/Ex labels must be used together.
3.4 Auto-Zero
Auto-Zero or Auto-Set is a feature which allows the user to set the sensors and display to
read 0 ppm and %LEL for the toxic and combustible sensors, and 20.9% for the oxygen
sensor. It is done automatically when the instrument is removed from the charging base. It
can also be accomplished by entering the maintenance menu after the instrument has been on
for 10 minutes. Auto Zero should only be performed in a fresh-air environment!
3.5 Combustible Display
The instrument’s combustible sensor and associated display can be set to correlate with
any one of 25 pre-programmed gases and vapors. This is accomplished by starting with
the instrument turned off, pressing the + button and simultaneously pressing the ON/OFF
button and releasing them both. The display reads the currently programmed combustible
gas and can be scrolled through the entire list by pressing the + button repeatedly. When
the desired gas is displayed, press the Enter/Backlight button.
NOTE: The combustible sensor is non-specific and does not have the ability to distinguish
or be selective for a particular gas. Correct use of the instrument depends upon
the user’s knowledge of the application to identify which combustible gas to
display.
3.6 Data Logging
The QUADRANT can maintain sampling data in memory. The QUADRANT is capable
of data logging in intervals from one second to 15 minutes. Depending on the interval,
the storage duration ranges from 40 minutes to 600 hours. The normal 1 minute interval
yields a 40 hour duration period. The data logged into the QUADRANT is held in
nonvolatile memory so it is not lost when the instrument is turned off.
3.7 Downloading Data
Optional Maintenance COM 2000 software may be purchased from ENMET Corp. or an
authorized distributor. This software enables downloading the data kept in the
QUADRANT memory.