24 • Optional Accessories
Gas Tracer Operator’s Manual, CSA Version
External Dilution Fitting
An external dilution fitting is available for the Gas Tracer. It is a 1:1 dilution fitting
and is designed to mate with the inlet fitting and accept a sample hose or probe.
The fittings are made with brass and nickel plated brass and are appropriate for
use with the four standard gases. The dilution fitting 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.
Figure 14: Dilution Fitting
Humidifier Tube
A 6 inch humidifier tube comes with any calibration kits purchased for the Gas
Tracer. It is for use in calibrating the ppm combustible gas sensor. If you did not
purchase a calibration kit for the Gas Tracer and purchased calibration cylinders
independently, you will need to purchase a humidifier tube in order to properly
calibrate the ppm combustible gas sensor. Use the humidifier tube to connect the
ppm calibration cylinder to the Gas Tracer.
Figure 15: Humidifier Tube
NOTE:
When removing the humidifier tube from the Gas Tracer or a demand
flow regulator, be sure to grasp it by the clear tubing at the ends of the
humidifier tube assembly, not the humidifier tube itself.
