Thermo Scientific SOLA II, Руководство пользователя

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Thermo Fisher Scientific SOLA II User Guide 2-1
Chapter 2
Product Overview
The Thermo Scientific SOLA II sulfur online analyzer combines proven
detection technology, easy-to-use, menu-driven software, and advanced
diagnostics to offer unsurpassed flexibility and reliability. The instrument
offers field programmable ranges, high sensitivity, total sulfur measurement,
fast response time, linearity through all ranges, and low consumables.
Major components of the SOLA II include a sample injection valve, carrier gas
flow control system, mixing chamber, pyrolyzer, optional dryer, and a pulsed
ultraviolet fluorescence (PUVF) detector. Unlike the original SOLA instrument,
the PUVF is not a subassembly. The SOLA II is a single assembly with one
software program and one user interface.
The sample injection valve periodically transfers a small amount of sample
(approximately 1.0 µL) into an air carrier gas. The air/sample mixture passes
through the mixing chamber to ensure complete mixing and then flows to the
pyrolyzer. The pyrolyzer combusts all sample components to SO
2
, CO
2
, and
H
2
O at approximately 1100°C (2012°F). The optional dryer (application
dependent) removes water from the sample that is produced during
combustion. The PUVF detector accurately measures the amount of SO
2
produced during combustion of the sample.
An appropriate sample conditioning system is mandatory for proper
functioning. The sample conditioning system should:
λ
Regulate sample pressure and temperature.
λ
Provide filtration to at least a 0.5-micron particle size. Staged filtration is
recommended (e.g. going from 10 micron to 5 micron to 0.5 micron). The
final filter should contain a hydrophobic element to remove undissolved
water.
λ
Ensure that a representative sample is transported to the analyzer in the
desired time.
λ
Maintain the sample in a single phase.
Function