LumaSense Technologies 3434i SF6 Leak Detector - Manual (Page 147)

Chapter 12
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BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S
Page 147 of 191
respective tubes in the flasks. It is vitally important that any
water, which collects in the extra flask, does not cover the short
outlet tube “B”.
It is very important that the concentration of water vapour used is
below the saturated water-vapour pressure of the air in the room
where calibration is being performed, otherwise water vapour will
condense out in the analysis cell. In practical terms this means that:
· The Monitor must have time to reach the ambient temperature of
the room before a calibration task is performed.
· The temperature of the water bath you use should be at least 2°C
below the ambient temperature of the room where calibration is
to be performed. So, if your ambient temperature is 20°C, make
sure that the temperature of the water-bath you use is set at a
maximum of 18°C.
Fig.12.6 Schematic diagram of the equipment necessary to produce
a supply of clean, wet air.
12.5 General Settings – Stand-alone Use
Before a practical calibration task can be started, the monitor has to
be informed about the kind of calibration task you wish it to perform.
This is done using the push-buttons on the front panel of the
Monitor.
The Calibration Task Set-Up Tree is illustrated in Fig.12.7 . It should
be used to help you follow the path through the different levels of the