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Operation
Operating Principle
The principle of opto-chemical oxygen detection using TecPen is based on the change in emission
of fluorescent radiation from the fluorescent dye. The dye is excited and the resulting fluorescence
event is recorded. The duration of this fluorescence event - the so-called lifetime - depends on the
amount of adsorbed oxygen in the sensor layer and can therefore be used to determine the oxygen
concentration.
Before You Begin
In a known gas with no particulate matter and no condensation the cannula (syringe) may be
connected directly to the TecPen. However, in most cases before taking a measurement the hose
and filter should be attached to the TecPen to prevent contamination of the gas chamber. To do
this, place the hose on the gas inlet (8) and fasten the filter to the other end of the hose. Attach the
cannula to the front of the filter.
Note
The back of the filter has a Luer lock closure. This must be turned into the intended
connection of the hose for proper installation.
If you move the TecPen to a room with a significantly different ambient temperature,
wait 1-2 hours before using it to guarantee accuracy.
Turning the TecPen On
Press the On/Off button
oxygen value of 0.00%. This is a placeholder and not an actual measurement result.
Taking a Measurement
The cannula is used to puncture the packaging to be measured. After inserting the cannula briefly
press the start button
after 10 seconds. If the measuring time needs to be extended after the first measurement has been
completed press the start button again.
Watch your
After each measurement put the protective cap on the sharp cannula to avoid injury.
Turning the TecPen Off
The unit can be switched off by pressing the On/Off button
to turn on the unit. The TecPen shows the battery status and an
to take a measurement. The measurement is automatically terminated
for at least two seconds.
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