Teledyne T360 Operation Manual page 49

Carbon dioxide analyzer
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Teledyne API Model T360/T360M Operation Manual
The minimum gas pressure of the source of purge air should be 7.5 psig.
If the source of the purge air is shared by a Teledyne Instruments T700 (e.g., Figure 3-13) the
minimum gas pressure should be 25 psig and should not exceed 35 psig.
07272B DCN6552
EXAMPLE: If the application is to measure between 0 ppm and 500 ppm, an
appropriate Span Gas would be 400 ppm. If the application is to measure
between 0 ppm and 100 ppm, an appropriate Span Gas would be 80 ppm.
Span Gas can be purchased in pressurized canisters or created using
Dynamic Dilution Calibrator such as the Teledyne Instruments Model
T700 and a source of dried air scrubbed of CO
Zero Air is similar in chemical composition to the Earth's atmosphere but
scrubbed of all components that might affect the analyzer's readings.
In the case of CO
measurements this means less than 0.1 ppm of CO
2
Vapor (when dew point <-15˚C). Zero Air can be purchased in pressurized
canisters.
3. Attach an exhaust line to the exhaust outlet port.
The exhaust from the pump and vent lines should be vented to
atmospheric pressure using maximum of 10 meters of ¼" PTEF tubing.
Venting should be outside the shelter or immediate area surrounding
4. Attach a source of dried air scrubbed of CO
5. Once the appropriate pneumatic connections have been made, check all
pneumatic fittings for leaks using a procedure similar to that defined in
Section 6.3.3.
CAUTION
the instrument.
2
NOTE
Getting Started
such as a bottle of N
2
and Water
2
to the purge inlet port.
.
2
47

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