2.3 Turning The Multipro Off; Alarms; Warning Alarms; Danger Alarms - Honeywell MultiPro Manual

time. Press the MODE button a third time to
view the Short Term Exposure Limit (STEL)
readings. Press the MODE button again to
view the Time Weighted Averages (TWA) for
the operating session.
Note: The MultiPro must be in continuous
operation for at least 15 minutes before it
will be able to calculate the TWA values.
For the first 15 minutes of any operating
session, the screen will show the length of
time that the instrument has been
operating instead of the TWA values.

2.3 Turning the MultiPro Off

To turn the MultiPro off, press and hold the
MODE button until the display reads "Release
Button". Once the MODE button is released
"Please wait" will be shown briefly and the
display will go blank.
→
2.4

Alarms

The MultiPro is configured with a series of
alarms that are designed to warn the user of
dangerous conditions.
The MultiPro is designed
to detect potentially life threatening
atmospheric conditions. Any alarm
condition should be taken seriously. The
safest course of action is to immediately
leave the affected area, and return only
after further testing determines that the
area is once again safe for entry.
2.4.1

Warning Alarms

A Warning Alarm indicates
a dangerous atmospheric
condition that has not yet
risen to a level necessary
to initiate the danger
alarms. Warning alarm
levels are shown during
the start up sequence.
Warning alarms can be temporarily silenced
by pressing the MODE button if this option is
enabled with BioTrak.
2.4.2

Danger Alarms

A Danger Alarm indicates
a significantly hazardous
condition. As is the case
with the warning alarms,
the danger alarm levels are shown in the start
up sequence.
2.4.3

STEL Alarms

STEL (Short Term
Exposure Limit) alarm
values represent the
average concentration of
instrument readings for the
target gas for the most
recently completed 15 minutes of operation.
The default STEL alarm level for the MultiPro
CO sensor is 100PPM. The default STEL
alarm value for the MultiPro H
15PPM.
2.4.4

TWA Alarms

TWA (Time Weighted
Average) values are
calculated by taking the
sum of exposure to a
particular toxic gas in the
current operating session
in terms of parts-per-million-hours and dividing
by an eight-hour period. The default TWA
alarm level for the MultiPro CO sensor is
35PPM. The default TWA alarm value for the
MultiPro H S sensor is 10PPM.
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2.4.5

Low battery alarms

When battery voltage is
reduced to approximately
3.55 volts, the battery icon
on the LCD will appear empty, which means
that a low battery condition exists.
If the battery icon is empty, leave the area
immediately. If the MultiPro is equipped with
an alkaline battery pack, proceed to an area
that is known to be safe (containing fresh air
with no contaminants and no combustible
gases) and change the batteries. If the
MultiPro is equipped with a Li-Ion battery
pack, proceed to an area that is known to be
safe and recharge the battery pack.
Once the battery voltage reaches 3.45 volts
the MultiPro will go into a 30-minute battery
alarm. The warning alarm will sound and the
screen will display "Lo-Bat", along with the
warning and alarm icons. The user will need
to acknowledge the low battery condition by
pressing the MODE button before the
instrument will resume monitoring. Once the
MODE button is pressed, the empty battery
cell and the caution icon will flash. After 15
minutes the warning will sound again to
indicate that there are now only 15 minutes of
battery life left. Once the second 15-minute
15
S sensor is
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