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WITT-GASETECHNIK GmbH & Co KG
Salinger Feld 4-8
: +49 (0)2302 89010 www.wittgas.com
Gas safety & process technology
D-58454 Witten,
Germany
Fax: +49 (0)2302 89013 [email protected]
7.2 Opening
/closing
needle cover
Open Close
Recommendation!
Open the needle cover immediately before a measurement and then close it again immedi-
ately after each measurement.
7.3 Conducting
measurements
Caution!
Adapt the OXYBABY
®
before the measurement to any changes in climate, to avoid any falsi-
fied test results (see Technical data).
This also applies to packaging which is stored at higher or lower temperatures than the OXY-
BABY
®
.
We advise calibrating the OXYBABY
®
before the first measurement
(see Chapter 8.9 and 9).
You can increase measuring accuracy by
performing two measurements at a very low temperature or by extending the measuring
time.
performing two measurements or extending the measuring time on successive meas-
urements on packages with very different gas concentration levels.
7.3.1
Sample Hold measurement
Change to the “sample hold” operating mode if required (see Chapter 8.4).
Select any product, user or line (production line) (see Chapter 8)
Stick foam pads onto the packaging that you wish to measure.
This seals the pierced position.
Open the needle cover (see 7.2)
Pierce the packaging through the foam pad.
Caution!
Do not jab into the fluid or the packaged product. Otherwise the OXYBABY will be soiled,
the needle or hose may clog up or the sensor may be damaged.
Start measurement with
.
The remaining measuring time is shown by the OXYBABY
®
at the top right of the display.
You can extend the measuring time during the measurement.
Press key
again, the measurement continues, if you press the key
again briefly.
Close the needle cover (see 7.2)
The last current measurement is shown on the display.
The measurement ends automatically in the Sample Hold mode
.
At very low temperatures, you may also need to run two measurements to increase the
measurement accuracy.
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