Revision 4
15
April 2020
photometer which uses narrow band optical filters. The conventional photometer measures only
a few discrete wavelengths, and spectrometers having lower resolution and fewer elements in
the detector are also less precise.
If, as is frequently the case, more than one of the sulfur-containing compounds indicated above
are present, their spectra will overlap. The system uses a deconvolution protocol to separate
the signals for each component via a multi component algorithm known as the
calibration
matrix
.
1.3
Analyzer Design
The Model 943-TGX-CE Analyzer System is packaged in two (2) frame mounted cabinets:
1. An
oven cabinet
which contains the sample handling system and associated
hardware (i.e., solenoids, oven, heaters, etc.). All electrical equipment residing in the
oven cabinet is installed using appropriate explosion proof and/or intrinsically safe
wiring methods.
2. A
control cabinet
which contains the electrical hardware necessary for the operation
of the analyzer. Under normal operating circumstances, the interior of the control
cabinet maintains a general-purpose area classification through the use of a positive
pressure Type X purge system. If positive purge pressure is lost, the purge system will
automatically cut power to the analyzer control cabinet, and the analyzer will shut
down. Temperature control for the control cabinet is provided by an instrument air-
driven Vortec vortex cooler.
All connections passing from the control cabinet to the oven cabinet are via gas-tight bulkhead
connections to prevent any process gases from passing from the oven cabinet into the control
cabinet.
An external
keypad
is provided for navigation of the analyzer’s user interface and for
modification of analyzer operating parameters. This keypad is connected to a USB port on the
inner right wall of the oven cabinet.
The Model 943-TGX-CE uses an all-electric heating system for the measurement cell block and
the associated sample handling system.
A drawing of the Model 943-TGX-CE is shown in Figure 1.
Содержание 943-TGX-CE
Страница 132: ...Revision 4 132 April 2020 Figure 81 Oven Cabinet Door Removed ...
Страница 133: ...Revision 4 133 April 2020 Figure 82 Control Cabinet Door Removed ...
Страница 134: ...Revision 4 134 April 2020 Figure 83 Power Steam Air Signals Connection Details ...
Страница 135: ...Revision 4 135 April 2020 Figure 84 AC Wiring Schematic ...
Страница 136: ...Revision 4 136 April 2020 Figure 85 DC Signals and Wiring Diagram ...
Страница 137: ...Revision 4 137 April 2020 Figure 86 Flow Diagram ...