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3.
GETTING STARTED
Follow the unpacking, inspection, and the electronic and pneumatic
connections instructions in the T200 manual.
The front and rear panel illustrations and indicator/control/display
descriptions in the T200 manual are the same for the T200UP. The
internal chassis layout is shown in Figure 3-1; compared to the T200
layout, the differences include the photolytic converter, a sample
conditioner, and an additional power supply (24V).
For the internal pneumatics of the T200UP in its standard configuration,
along with the optional Zero/Span valves, refer to the pneumatic diagram
3
shown in Figure 3-2. The sample flow is approximately 1100 cm
/min.
Also during Auto Zero mode, the sample gas is routed through a pre-
reactor before the mixture enters the reaction cell. Since the reaction rate
constant between NO and ozone is several times faster than the reaction
rate constant between hydrocarbons and ozone, this mechanism helps to
eliminate the interference effects of hydrocarbons in NOx measurements.
In addition, the T200UP is equipped with a high performance pump,
capable of producing a reaction cell pressure of less than 5 Inch Hg
absolute, which enhances the chemiluminescent reaction.
07450B DCN6495
11
Information contained herein is classified as EAR99 under the U.S. Export Administration Regulations. Export, reexport or diversion contrary to U.S. law is prohibited.
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