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Function Description
The instrument is durable, but for extra safety the
instrument shall be secured by the safety strap on the
top. The measuring sensor is inside the unit. Several
openings in the housing make the air circulate through
the unit. These openings must be kept open!
Please note!
Whenever you go from a cold environment
to a warm environment there is a risk of condensation
(anyone with glasses has noticed it). To avoid that this
influences the accuracy of the instrument it is important
to allow it to adjust to the environment for a few minutes
before usage
Figure 1. The flow through the unit
.
The display shows the instantaneous CO
2
value and the TWA-value. The instantaneous CO
2
value is also easy overviewed with the front panel LEDs. When the CO
2
concentration
reaches the lowest alarm level the second yellow LED is lit and an intermitted audio alarm is
triggered. If the concentration continues to rise the red LED is lit as the second alarm level is
reached and a continuous audio alarm is triggered.
Figure 2. Front Panel
Note: If the status indicator is shown the readings are not reliable! The actions
to take are then always first to charge the battery, second to recalibrate the CO
2
sensor zero point (put the unit in CALb Mode). If still the status indicator is
shown after these two actions, please contact your dealer!
2
nd
Yellow LED: Pre Alarm
1,5 %
VOL
CO
2
Status Indicator
Red LED: Main Alarm
3,0 %
VOL
CO
2
2
nd
Green LED:
0,1 %
VOL
CO
2
1
st
Yellow LED:
0,5 %
VOL
CO
2
1
st
Green LED: Always activated
in On or Sleep Mode
CO
2
Concentration in %
VOL
TWA value
in %
VOL
CO
2
On/OFF/Function Button
Battery Indicator
Air inlet
Air outlet
C 1100
