Campbell Scientific TGA100 Trace Gas Analyzer Manual - Manual (Page 23)

2 INSTALLATION
The basic components required to operate the TGA100 are shown in Fi . Other components, such as a sample
air dryer, valves to switch between multiple intakes, calibration gases, etc. may also be required, depending on the
user’s application. These optional components will be discussed in other sections.
gure 2-1
Figure 2-1. Basic Components Required for TGA100 Operation
TGA100 Analyzer
Reference Gas Sample Pump
TGA100 PC
Sample Intake
Fiber Optic
Cable
Reference Gas Connection
Suction Hose
2.1 Analyzer Installation
The TGA100 analyzer (the optics and electronics) is housed in an insulated fiberglass enclosure that allows it to operate
in the open environment. However, if a tent or other shelter is not available, the optional TGA Temperature Controller
and TGA Insulated Enclosure Cover are recommended. The analyzer must be placed on a stable surface. If placed on
uneven ground, wooden blocks or other supports can be used under the two pairs of rubber feet near the ends of the
enclosure. Older enclosures have a third pair of rubber feet in the center, but should be placed on blocks so that only the
four feet on the ends are used.
The analyzer should be connected to other system components as follows:
1) Connect the vacuum exhaust outlet of the analyzer to the sample pump using 1" ID exhaust hose and hose clamps.
The sample pump must be able to pull the required flow rate at 75 mbar or less. The actual flow rate and pressure
required will depend on the application. The RB0021, available from Campbell Scientific, has a capacity of 18
slpm at 50 mbar (15 slpm with 50 Hz power), and is adequate for most applications.
2) Connect the reference gas supply to the reference gas inlet on the end of the analyzer. The reference gas supply
should have an appropriate regulator, flow meter, and needle valve to supply approximately 10 ml/min. See section
4.1.2 for more details on the reference gas.
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