Description
Measuring hydrogen sulfide (H 2 S), the 931 Single Gas H 2 S Analyzer is a rugged, single-ultraviolet (UV) component photometric analyzer with a low-maintenance, no-moving-parts design, housed in an explosion-proof package.
This rugged, single-ultraviolet (UV) component photometric gas analyzer is housed in an explosion- proof package. Typically measuring hydrogen sulfide (H 2 S), the 931 is designed for a variety of gas monitoring and process control applications and is a “hot-wet” analyzer with a heated cell oven to avoid hydrocarbon or water condensation. A fully integrated sample system ensures reliable dew point control without running the risk of plugging, contaminating, or flooding the analyzer.
The 931 may optionally be provided with a thermal conductivity detector (TCD) for the measurement of hydrogen (H 2 ). The unit can also be configured for sulfur dioxide (SO 2 ), carbonyl sulfide (COS), carbon disulfide (CS 2 ) or ammonia (NH 3 ) as the primary measurement. No matter what the need is, this flexible, low-maintenance analyzer design is the answer to many of today’s complex process control requirements.
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 H 2 S, monitoring of sour gas pipelines, or process control of SRU tail gas treating units. The 931 is a single-gas measurement solution for process monitoring and control application.
KEY BENEFITS
– No moving-parts design
– Measurement of additional species optionally available (thermal conductivity detector)
– Sample can be returned to process (with HAG probe option)
– Low-maintenance design
– Minimal span drift
– Stream-switching capability
