SS500/SS2000 Analyzer
1–4 4900002285 rev. B 3-25-20
SpectraSensors Overview
SpectraSensors, Inc. is a leading manufacturer of advanced electro-optic gas
analyzers. Headquartered in Houston, Texas, SpectraSensors was incorporated
in 1999 as a spin-off of the NASA/Caltech Jet Propulsion Laboratory (JPL) for
the purpose of commercializing space-proven measurement technologies
initially developed at JPL. SpectraSensors was acquired by the Endress +
Hauser Group in 2012.
How the Analyzers Work
The SS500/SS2000 analyzers employ tunable diode laser absorption
spectroscopy (TDLAS) to measure the concentration of contaminants such as
moisture in a background of natural gas. Absorption spectroscopy is a widely
used technique for sensitive trace species detection. Because the measurement
is made in the volume of the gas, the response is much faster, more accurate
and significantly more reliable than traditional surface-based sensors that are
subject to surface contamination.
In its simplest form, a diode laser absorption spectrometer consists of a sample
cell with a mirror at one end, and a mirror or window at the opposite end,
through which the laser beam can pass. Refer to Figure 1–1. The laser beam
enters the cell and reflects off the mirror(s) making one or more trips through
the sample gas and eventually exiting the cell where the remaining beam
intensity is measured by a detector. Sample gas flows continuously through the
sample cell ensuring rapid and continuous measurements.
Failure to follow all directions may result in damage or
malfunction of the analyzer.
Maximum voltage and current specifications for fuses.
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