Rae QRAE PLUS PGM-2000, Руководство по эксплуатации и техническому обслуживанию

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OPERATION OF ACCESSORIES
3-4
3.3. Water Trap and C-Filters
The water trap filter is made of PTFE (Teflon

) membrane with
a 0.2 micron pore size to prevent water from being sucked into
the sensor manifold, which would cause extensive damage to
the monitor. It will also prevent dust and other particles from
entering the monitor. The C-filter is a cellulose filter that helps
remove coarse dust and water mist and reduces high humidity.
Both can be used together to prolong the operating life of the
sensors and pump. Either or both filters should be changed if
they change color, become clogged with particulates, or if liquid
water has been sucked in.
To install the water trap filter, twist the threaded end tightly into
the Luer connector on the inlet probe. Install the C-filter into its
plastic housing and twist the threaded end tightly into the Luer
connector in front of the water trap filter.
Figure 8. C-Filter housing
For faster response, the user may consider removing the water
trap for some reactive gases including Cl
2
, PH
3
, NH
3
, and HCN.
However, the procedure may shorten the pump and sensor
lives.