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Total Sulfur Option User Manual – Revision 1.0
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4.2.1 330S/331S H2S & TS with Mode Switching and Hydrogen Saver
A second solenoid may be added to shut off the hydrogen gas when in H2S mode. This
configuration saves hydrogen usage by a large margin (see table 1). The analyzer is typically
programmed to run every 6 hours or alternate between H2S mode and TS mode each analysis;
however, any schedule can be built to customer specification.
4.3 330SDS/331SDS H2S & TS with Hydrogen Saver
With a dual sensor analyzer (SDS) both the H2S and total sulfur can be measured simultaneously.
Sensor one will read the H2S stream while sensor two will read the total sulfur stream. The
addition of a solenoid allows the shut-off of the hydrogen if scheduled TS runs are programmed.