RKI Instruments Gas Tracer - Manual (Page 39)

Gas Tracer Operator’s Manual Measuring Mode, Normal Operation • 31
on page 20.
2. Connect the purge tee fitting to the Gas Tracer’s quick connect inlet
fitting.
3. Insert the sample port into the flowing gas. The vent port will
allow any excess gas to release to the atmosphere to avoid damage
to pump or sensors.
Figure 16: Purge Tee Fitting
Using the Dilution Fitting
The external dilution fitting is a 1:1 dilution fitting. It is normally used when
it is necessary to introduce air into a sample that has no oxygen or a very low
level of oxygen, such as a nitrogen purged sample. It can also be used when
one of the target gas levels in the sample area will likely be present in a
concentration above the detection range for that gas. Since the fittings
partially consist of unplated brass, they are not appropriate for detection of
elevated levels of H
2
S.
1. Start up the Gas Tracer as described in “Start Up, Normal Mode”
on page 20.
2. Install the dilution fitting to the Gas Tracer’s quick connect inlet
fitting.
3. Connect the tapered rubber nozzle or the sample hose to the Gas
Tracer’s quick connect inlet fitting.
4. If a sample hose is used, screw the probe onto the sample hose’s
threaded fitting.
5. Monitor the sampling area.
GX-2012 Inlet
Pressurized
Stream
Sample Port
Excess
Pressurized
Sample
Vent Port