ThermoFisher Scientific Ozone Primary Standard 49iQPS, Инструкция по эксплуатации

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System Description
Common Electronics
7-2 49iQPS Instruction Manual Thermo Scientific
The optical bench has two airtight chambers that contain the sample and
reference gases with a common photometer lamp at one end and two
individual detectors at the other end.
The photo-diode in each detector transmits light intensity information to
the DMC board for sample measurement computations.
The photometer lamp power supply generates high voltage AC and
contains heater control circuits for the photometer lamp.
The optional internal ozonator operates on the photolytic principle. The
ozone level produced is a function of light intensity at 185 nm and gas
flow. The light intensity is varied by changing the current into the lamp.
The gas flow is held constant by a pressure regulator followed by a
capillary.
The optional ozonator lamp power supply generates high voltage AC and
contains heater control circuits for the ozonator lamp.
The common electronics contain the core computational and power
routing hardware for the 49iQPS, and is replicated throughout other iQ
series products (
Figure 7–1 ). It also contains front panel display, the USB
ports, the Ethernet port, and the optional I/O interfaces (RS-485, analog,
and digital).
Figure 7–2 shows the PCBA interconnect structure for the 49iQPS,
including options. The modular design of the instrument is conveyed in
the architecture. Brief descriptions of the specific PCBAs follow.
Photometer DMC
with Lamp
Detector System
Photometer Lamp Power
Supply
Ozonator DMC
Ozonator Lamp Power
Supply
Common
Electronics