931 Single Gas H2S Analyzer

Model 931 Single Gas H2S Analyzer (opt. + H2 and HC)

Measuring hydrogen sulfide (H2S), the 931 is a rugged, single-ultraviolet (UV) component photometric analyzer with a low-maintenance, no-moving-parts design, housed in an explosion-proof package.

It can also be configured for primary measurements of sulfur dioxide (SO2), carbonyl sulfide (COS), carbon disulfide (CS2) or ammonia (NH3), and provided with a thermal conductivity detector (TCD) for the measurement of hydrogen (H2).

The 931 is a “hot-wet” analyzer with a heated cell oven to avoid condensation. A fully integrated sample system ensures reliable dew point control without running the risk of plugging, contaminating, or flooding the analyzer.

Providing a flexible, configurable solution to a range of complex process control requirements, the 931 is ideal for sulfur recovery and sour gas pipeline applications in the hydrocarbon processing industry.

FIXED OPTICAL CONFIGURATION
Instead of using a filter/chopper wheel to alternate between measure and reference wavelengths, the 931 uses a fixed optical configuration and pulsed UV lamps. This design leads to increased light throughput, reduced noise levels, and reduced maintenance.

UNPARALLELED LINEARITY
Resolution of better than 0.02 nm is achieved with high-intensity, low-energy hollow cathode UV source lamps. This high-resolution design enables unparalleled linearity over a wide dynamic range, which leads to simple, robust data analysis.

APPLICATION FLEXIBILITY
Designed for a variety of gas monitoring and process control applications, the 931 delivers reliable, field-proven single-species measurements. This makes it ideal for high-concentration H2S, monitoring of sour gas pipelines, or process control of SRU tail gas treating units.

The 931 is our single-gas measurement solution for process monitoring and control applications – Find out more.

Features
  • Low-maintenance design
  • No moving parts
  • Minimal span drift
  • Stream-switching capability