H2S Analyzer – Measure hydrogen sulfide with Applied Analytics

H2S Analyzers

Introducing the OMA H2S analyzer by Applied Analytics, a breakthrough in hydrogen sulfide monitoring. This process gas analyzer measures H2S levels accurately in various industrial environments, ensuring safety and compliance. Its technology detects H2S in multiple settings, from natural gas to wastewater. Discover how the OMA H2S Analyzer can safeguard your operations and comply with safety standards. Contact ASaP for a customized solution to meet your H2S monitoring needs.

OMA-300 UV-VIS wall-mounted Process H2S Analyzer - Measure Hydrogen Sulfide with Applied Analytics

Our comprehensive range of products includes offshore and onshore service, an extensive selection of gas analysis instruments, sample conditioning, and various cabinets and houses for your instruments, tailored to meet the unique requirements of various petrochemical and cryogenic applications. We are dedicated to delivering innovative solutions that ensure accurate and efficient operations in the process industry.

Addressing industrial challenges with hydrogen sulfide measurment

OMA-300 UV-VIS wall-mounted Process H2S Analyzer YouTube demonstration video - Measure Hydrogen Sulfide with Applied Analytics
OMA-300 UV-VIS wall-mounted Process H2S Analyzer YouTube demonstration video

Hydrogen sulfide (H2S) poses significant risks in industrial settings, necessitating accurate detection and monitoring. Traditional methods often fall short, lacking in precision and reliability. This gap leads to potential safety hazards and non-compliance with regulatory standards.

Enter the OMA H2S Analyzer by Applied Analytics, supplied by ASaP. This sophisticated hydrogen sulfide analyzer addresses these challenges head-on. Its technology provides real-time, precise H2S measurements in diverse mediums like natural gas, crude oil, and wastewater. Its adaptability ensures comprehensive monitoring, from trace levels to high concentrations, maintaining workplace safety and regulatory adherence.

OMA-300 UV-VIS wall-mounted Process H2S Analyzer - Measure Hydrogen Sulfide with Applied Analytics
OMA-300 UV-VIS wall-mounted Process H2S Analyzer

Advantages of using an OMA hydrogen sulfide analyzer

The OMA H2S Analyzer offers numerous benefits:

  1. Precision and Speed: Delivers rapid and accurate H2S readings, essential for timely decision-making.
  2. Versatility: Capable of analyzing various substances, making it suitable for multiple industries.
  3. User-Friendly: Features an intuitive interface, simplifying the monitoring process.
  4. Safety Assurance: Designed with safety as a priority, reducing the risk of accidents.
  5. Cost-Effective: Low maintenance and durable, ensuring long-term savings.

Customer reviews

ASaP review stars

“We are using OMA H2S Analyzers in our refinery for some time now. Its accurate readings and reliability have significantly improved our standards.”

Analyzer Specialist, Rotterdam Botlek area

OMA H2S analyzer key features

Hydrogen sulfide measurement has evolved significantly. Initially, rudimentary methods provided basic detection, often with substantial limitations. The development of the H2S analyzer marked a significant advancement, introducing precision and reliability into H2S monitoring.

Utilizing ultraviolet-visible (UV-Vis) spectroscopy, it measures H2S concentration with unprecedented accuracy. This method detects H2S’s unique absorbance curve, isolating it from other sample components. The analyzer’s history reflects a commitment to innovation, safety, and efficiency in industrial monitoring.

  • Real-time H2S concentration measurement
  • Applicable in liquid and gas processes
  • High accuracy and dynamic range
  • UV-Vis absorbance monitoring
  • Suitable for various industrial applications
OMA-406R UV-VIS rackmount Process H2S Analyzer - Measure Hydrogen Sulfide with Applied Analytics
OMA-406R UV-VIS rackmount Process H2S Analyzer – Measure Hydrogen Sulfide with Applied Analytics

Applications of the OMA H2S analyzer

The OMA H2S Analyzer’s versatility extends across various industries, including:

  • Biogas
  • Synthesis gas
  • Hydrogen recycle
  • CO2 recycle
  • Petroleum and natural gas processing
  • Wastewater treatment
  • Chemical manufacturing
  • Environmental monitoring
Hydrogen sulfide monitoring in wastewater and industrial environments with OMA H2S Analyzer by Applied Analytics
Hydrogen sulfide monitoring is used in wastewater management and industrial environments.

Technical overview of the OMA H2S analyzer

The OMA H2S Analyzer employs UV-Vis spectroscopy for precise H2S measurement. This technology involves measuring the absorbance of ultraviolet and visible light by the sample. The analyzer’s xenon light source transmits light through the sample in a flow cell, with fiber optic cables carrying the signal.

This process results in a high-resolution absorbance spectrum, allowing for accurate H2S detection. The analyzer’s software, ECLIPSE, processes this data to provide real-time concentration readings. Its design ensures safety, with the sample fluid remaining outside the analyzer enclosure. This technical sophistication positions the OMA H2S Analyzer as a leading solution in gas monitoring.

Process H2S analyzer UV-Vis absorbance spectroscopy absorbance curve
H2S UV-Vis absorbance curve

OMA H2S analyzer models

The OMA H2S Analyzer series includes:

  1. OMA-300: Wall-mounted, ideal for industrial use.
  2. OMA-206P: Portable, perfect for field operations.
  3. OMA-406R: Rackmount, suitable for laboratory environments.

Despite having identical core functions, each model caters to specific use cases with unique form factors and construction materials.

OMA-300 UV-VIS wall-mounted Process H2S Analyzer - Measure Hydrogen Sulfide with Applied Analytics
OMA-300: Wall-mounted, ideal for industrial use.
OMA-206P UV-VIS portable Process H2S Analyzer - Measure Hydrogen Sulfide with Applied Analytics
OMA-206P: Portable, perfect for field operations.
OMA-406R UV-VIS rackmount Process H2S Analyzer - Measure Hydrogen Sulfide with Applied Analytics
OMA-406R: Rackmount, suitable for laboratory environments.

OMA H2S analyzer specifications


Measurement PrincipleDispersive ultraviolet-visible (UV-Vis) absorbance spectrophotometry
Detectornova II™ UV-Vis diode array spectrophotometer
Spectral Range200-800 nm
Light SourcePulsed xenon lamp (average 5 year lifespan)
Signal Transmission600 μm core 1.8 meter fiber optic cables
Other lengths available
Path LengthApplication-dependent
Sample ConditioningCustom design per application
Analyzer CalibrationIf possible, analyzer is factory calibrated with certified calibration fluids; no re-calibration required after initial calibration; measurement normalized by Auto Zero
Reading VerificationSimple verification with samples and self-check diagnostic
Human Machine InterfaceIndustrial controller with touch-screen LCD display running ECLIPSE™ Software
Data StorageSolid State Drive
Analyzer EnvironmentIndoor/Outdoor (no shelter required)
Ambient TemperatureStandard: 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.
Sample TemperatureStandard: -20 to 70 °C (-4 to 158 °F)
Optional: up to 150 °C (302 °F) with cooling extensions
Contact AAI for temperatures above 150 °C (302°F)
Sample PressureUsing standard flow cell: 206 bar (3000 psi)
Using immersion probe: 100 bar (1470 psig)
Electrical85 to 264 VAC 47 to 63 Hz
Power Consumption45 watts
Standard Outputs1x 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 OutputsModbus TCP/IP; RS-232; RS-485; Fieldbus; Profibus; HART;


H2S Accuracy in Liquid
Example ranges below. Custom ranges available.
0-100 mg/L:  ±1% full scale or 1 mg/L*
*Whichever larger.
H2S Accuracy in Gas
Example ranges below. Custom ranges available. Accuracy may be higher at higher pressure.
0-10 ppm (@1 bar):  ±1 ppm (Increased pressure will yield increased accuracy);  ±0.2 ppm (@5 bar)
0-100 ppm:  ±1% full scale or 1 ppm*
0-10,000 ppm:  ±1% full scale
0-100%:  ±1% full scale
*Whichever larger.


Standard DesignGeneral Purpose
Available OptionsATEX, IECEx, EAC, PESO
Please inquire with your sales representative for additional certifications (CSA, FM etc.).

Final thoughts on the applied analytics OMA H2S analyzers

The OMA H2S Analyzer represents a significant advancement in gas monitoring technology. Its precision, versatility, and safety features make it an indispensable process gas analyzer in various industrial applications. By choosing this analyzer, industries not only ensure compliance with safety standards but also embrace a solution that boosts operational efficiency. The OMA H2S Analyzer, supplied by ASaP, is more than just a device; it’s a commitment to safety, reliability, and technological advancement.

Get in Touch with ASaP

For detailed information and to discuss how the OMA H2S Analyzer can benefit your operations, contact our specialists at ASaP. Reach out to us, and we will explore the possibilities together.

FAQ: Answering questions about H2S analyzers

What is an H2S analyzer?

An H2S Analyzer is a device for measuring hydrogen sulfide concentration in various environments and industries.

Which problems does a H2S analyzer solve?

It accurately measures H2S levels, ensuring safety and compliance with environmental standards.

In which applications can a H2S analyzer be used?

Used in gas processing, wastewater treatment, environmental monitoring, and more.

What are the prominent features of an H2S analyzer?

Real-time measurement, UV-Vis spectroscopy, adaptable for liquid/gas processes, and safety-focused design.

Need advice for your Hydrogen Sulfide application?

ASaP practical solutions

The practical solutions of ASaP are based on decades of experience, specific education, knowledge of the team members and, last but not least, the joy in our work. The well-established and complementary ASaP package of services and products is an important contribution to the right solutions for your analytical needs. Moreover, the team spirit and the cooperation with specific partners give us the opportunity to design, build, locally install and commission tailor made analyzer systems for you. All these products and systems can be carried out according to the latest guidelines, such as ATEX.

ASaP is a reputable provider of analytical solutions; We can provide you with a full-service package including engineering, manufacturing, offshore service, analyzers, system integration, and cutting-edge LNG Custody Transfer Systems (CTMS), LNG Probe-Vaporizers, advanced LNG Samplers, and precise NG analysis systems. You are kindly invited to consult us on any analytical challenge!