Introduction Serinus 51 User manual 1.0
8
1.5.8 Lamp Driver PCB
This driver uses a high voltage and high frequency switching supply to
start and maintain the UV lamp at a constant intensity. The lamp
current is set by the microprocessor and is maintained at 30 mA.
1.5.9 Pressure PCB
The absolute pressure transducer is mounted to the measurement cell,
and used to measure the sample pressure in the cell. This pressure is
also used for the instrument to calculate flow.
1.5.10 Power supply
The power supply is a self-contained unit housed in a steel case
designed to meet CE requirements.
It has a selectable input voltage of 115 or 230VAC 50/60 Hz and an
output voltage of 12 VDC power for distribution within the analyzer.
Note: Input voltage can be manually changed
by sliding the red switch left (230) for 220-
240V or right (110) for the 100-120V. Ensure
the switch is set to the correct voltage (from
supply) before switching on.
On/off switch
Located on the back panel (bottom right facing from behind the
instrument)
1.5.11 Sulfur Dioxide scrubber
The Sulfur Dioxide scrubber is a selective scrubber that captures SO2
but allows H2S to continue through to the internal converter.
1.5.12 Internal converter
The internal converter uses high temperatures (300ºC) and a catalyst to
convert any H
2
S in the sample to SO
2
. This conversion is used for H
2
S
measurements which have previously had the SO2 portion scrubbed
from it.
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