14
or
Following the calibration status screens, the
MultiPro will proceed to the current gas
readings screen.
2.1.1 Start up with pump
MultiPro instruments that are equipped with a
built-in motorized sample draw pump will have
a slightly longer start up sequence. After the
calibration status screens, the MultiPro will
prompt you to test the pump for leaks.
Note: The sample probe assembly must
be attached when the pump is started.
→
Block the sampling inlet by placing a finger
over the end of the sample probe assembly.
Once the MultiPro
recognizes that the test is
passed, it will instruct you to
remove the blockage.
Once the blockage is
removed, the MultiPro will
proceed to the current gas
readings screen.
If the instrument is unable to detect the
vacuum resulting from the pump blockage, the
test will fail and you will be directed to remove
the pump.
↔
For information concerning proper attachment
of the sample probe assembly to pump-
equipped MultiPro instruments, see section
3.1.
2.2 Operating
Logic
Once the MultiPro has
completed the start up
sequence, the current gas
readings screen will be
shown. At the center of the
display is a heartbeat that
will “beat” every few seconds to show that the
instrument is functioning normally.
If the MultiPro is due for fresh air/zero
calibration, the “0-Cal” will flash on the LCD
once every 5 seconds as a reminder. If the
MultiPro is due for span calibration, the
calibration bottle icon will be
shown. Both “0-Cal” and the
calibration bottle icon will be
shown if the instrument is
due for both span and fresh
air calibration.
If a sensor is not detected in
one of the sensor channels during start up,
the reading in the designated sensor channel
will appear blank. If a complete sensor failure
occurs while the instrument is turned off, the
instrument may operate as if the sensor is not
present in the instrument. In the example at
right, the LEL sensor has
not been detected and a
reading is not shown. The
MultiPro™ only detects
those substances that
appear in the current gas
readings screen during the
current operating session.
: Always verify that all
sensors present in the instrument are
shown on the current gas readings screen
whenever the MultiPro
TM
is turned on.
Failure to verify sensor presence prior to
use in a hazardous location may result in
serious injury or death.
If the MultiPro recognizes that the pump is
attached, “Pump” will be displayed in the
current gas readings screen
The battery icon gives an indication of how
much power is left in the battery. The
illustration below shows the stages of the
battery from full to empty (top to bottom).
Battery charge greater than
80%
Battery charge between 50%
and 80%
Battery charge between 25%
and 50%
Battery charge less than
25%
To turn on the backlight press the MODE
button once. To view the MAX readings
screen, press the MODE button a second
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