TSA-100 Total Sulfur Analyzer main view
TSA-100

Total Sulfur Gas Analyzer

The TSA-100 uses the conventional pyrolysis method for converting all sulfur compounds in the sample to sulfur dioxide. The system uses a high-performance UV-Vis spectrophotometer to measure the resulting SO2 concentration, which correlates to total sulfur.

Note: for applications that require analysis of up to 5 known sulfur compounds, we recommend the OMA Process Analyzer as a more practical and affordable solution.

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Features

Performance

  • ASTM-Style Total Sulfur Analysis
    Sampling system pyrolyzes sulfur compounds to SO2
  • Fast, continuous reading
    Total response time under 10 seconds
  • No false positives
    No interference from lurking chemicals
  • Excellent low-range performance
    Using UV-Vis spectrophotmeter
  • Huge dynamic range
    Remains accurate through wide changes in concentration

Reliability

  • Unattended operation
    Stabilized by Auto-Zero; remote operation optional
  • Inherently safe design
    Sample fluid never enters analyzer enclosure Learn more
  • Customizable alarms & outputs
    4-20 mA analog outputs; MODBUS; Hart... View technical specs

Compatibility

  • Hazardous area certifications
    Class I Div 1 & 2; ATEX; GOST... View certifications
  • No shelter required
    Rugged instrument suitable for outdoor installation

Applications

Sulfur compounds--particularly hydrogen sulfide--in natural gas carry with them a host of problems and considerations for both producer and consumer. Sulfur content is known to:

  • Cause pipeline corrosion, jeopardizing distribution networks and necessitating complex maintenance regimens
  • Officially reduce the quality of sales gas; natural gas quality assurance involves monitoring of sulfur content, e.g. at custody transfer points
  • Contribute directly to SO2 emissions from gas-burning plants; SO2 is a widely regulated pollutant and a necessary concern for avoiding fines and fulfilling social responsibility
  • Introduce unpleasant odors to gas-dependent industrial and domestic environments; mercaptans are added to natural gas to make leaks noticeable by smell, but uncontrolled sulfur content turns the odor from useful to intolerable

Avoiding these chronic sulfur-related issues requires reliable online monitoring of total sulfur load in gaseous hydrocarbon streams. The only way to verify the efficiency of sulfur removal processes and ensure satisfaction of customer and environmental needs is to proactively analyze stream composition.

The TSA-100 is a fully integrated monitoring solution driven by UV-Vis diode array detection. This solid state instrument is a much more practical than the consumable-laden designs that have historically dominated the market.

Sampling

The TSA-100 sample conditioning system is designed primarily for controlled combustion of the sample.

Upon entering the TSA-100, the sample is split via tee into a bypass loop and a sample loop. In the sample loop, two mass flow controllers are used to accurately mix the sample with air, ensuring an optimal air/fuel ratio for combustion.

The sample/air mixture flows through a pyrolysis furnace, where all present sulfur compounds are converted to sulfur dioxide:

R-S + R-H + O2 > SO2 + CO2 + H2O

The fully oxidized sample then enters the measurement flow cell where SO2 absorbance is monitored (via fiber optic cables). Finally, the sample exits the system as waste.

Specifications

Note: All performance specifications are subject to the assumption that the sample conditioning system and unit installation are approved by Applied Analytics. For any other arrangement, please inquire directly with Sales. Subject to modifications; specified product characteristics and technical data do not serve as guarantee declarations.

Measurement Principle Dispersive ultraviolet-visible (UV-Vis) absorbance spectrophotometry
Light Source Pulsed xenon lamp (average 5 year lifespan)
Signal Transmission 600 μm core 1.8 meter fiber optic cables
Other lengths available
Path Length Application-dependent
Sample Conditioning Pyrolysis SCS
Analyzer Calibration If possible, analyzer is factory calibrated with certified calibration fluids; no re-calibration required after initial calibration; measurement normalized by Auto Zero
Reading Verification Simple verification with samples
Human Machine Interface Industrial controller with touch-screen LCD display running ECLIPSE™ Software
Data Storage Solid State Drive
OPERATING CONDITIONS
Analyzer Environment Indoor/Outdoor (no shelter required)
Ambient Temperature Standard: 0 to 35 °C (32 to 95 °F)
Optional: -20 to 55 °C (-4 to 131 °F)
To avoid radiational heating, use of a sunshade is recommended for systems installed in direct sunlight.
UTILITIES
Electrical 85 to 264 VAC 47 to 63 Hz
Power Consumption 45 watts
OUTPUTS
Standard Outputs 1x galvanically isolated 4-20mA analog output per measured analyte(up to 3; additional available by upgrade)
2x digital outputs for fault and SCS control
Optional Outputs Modbus TCP/IP; RS-232; RS-485; Fieldbus; Profibus; HART;
PHYSICAL SPECIFICATIONS
Size Analyzer: 24" H x 20" W x 8" D (610 x 508 x 203 mm)
Weight Analyzer: 32 lbs. (15 kg)
Enclosure Standard: wall-mounted carbon steel NEMA 4 enclosure
Photometric Accuracy ±0.004 AU
Application Accuracy Dependent upon application. Please inquire with Sales.

The following certifications are available.

NEC Class I, Division 1, Groups C & D; AEx d IIB T3
CEC Class I, Division 1, Groups C & D; AEx d IIB T3
ATEX ATEX Exp II 2(2) GD
GOST GOST Russian Gosstandart Pattern Approval

Documentation