The OMA H2S Analyzer monitors the UV-Vis absorbance in a continuously drawn liquid/gas sample and outputs real-time hydrogen sulfide concentration.
Harvesting this rich data, the OMA H2S Analyzer isolates the H2S absorbance curve and provides a real-time value for H2S concentration in your process.
H2S occurs abundantly in the world’s fossil fuel reserves and also forms as a by-product in various industrial and biological processes. In order to produce clean-burning fuels, prevent acid rain, protect pipelines and equipment from corrosion, and — most importantly — protect workers from imminent disasters, H2S levels are highly regulated using scrubbers, scavengers, sulfur recovery units, and other removal technologies.
To properly control the level of H2S in fuel, wastewater, or emissions, you need a reliable method of measuring the H2S concentration. Since safety is a major concern, only highly proven solutions are considered. For many years, that meant that customers were stuck with archaic paper tape technology, a maintenance headache with toxic consumables and frequent moving-part hardware failures.
Since its launch in 1994, OMA technology has rapidly replaced the old methods by providing the customer with solid state reliability and superior performance in an affordable package.Request a Quote
With thousands of units shipped since 1994, the OMA H2S Analyzer has been deployed for a wide range of applications across various industries:
All OMA models are equivalent in function and performance with identical electronic configurations. The models vary by form factor and materials of construction, each intended for a unique use case.
Wall-mounted process analyzer
Suitcase process analyzer
Rackmount process analyzer
The OMA-300 is offered in two explosion-proof formats:
Eexp systems are purged and pressurized using a certified air-purging device. This method ensures that toxic/explosive gas is not allowed to accumulate inside the enclosure, and is ideal when instrument air is available.
Eexd systems are contained within certified explosion-proof cast-aluminum enclosures. This method is more practical if the installation is remote or utilities are unreliable.
The OMA is built for direct analysis of the hot/wet sample, thus simplifying the scope of the sample system and retaining high sample integrity. From our vast experience in sampling design, we know that applications can be similar but are rarely identical. For this reason, we design and build sample conditioning systems on a project basis, working from the process to the drawing board.
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.
|Measurement Principle||Dispersive ultraviolet-visible (UV-Vis) absorbance spectrophotometry|
|Detector||nova II™ UV-Vis diode array spectrophotometer|
|Spectral Range||200-800 nm|
|Light Source||Pulsed xenon lamp (average 5 year lifespan)|
|Signal Transmission||600 μm core 1.8 meter fiber optic cables
Other lengths available
|Sample Conditioning||Custom design per application|
|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 and self-check diagnostic|
|Human Machine Interface||Industrial controller with touch-screen LCD display running ECLIPSE™ Software|
|Data Storage||Solid State Drive|
|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.
|Sample Temperature||Standard: -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 Pressure||Using standard flow cell: 206 bar (3000 psi)
Using immersion probe: 100 bar (1470 psig)
|Electrical||85 to 264 VAC 47 to 63 Hz|
|Power Consumption||45 watts|
|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;|
|Select analyzer type:||OMA-300 Wall-Mounted Analyzer|
|OMA-206P Portable Analyzer|
|OMA-406R Rackmount Analyzer|
|H2S Accuracy in Liquid|
|Example ranges below. Custom ranges available.|
0-100 mg/L: ±1% full scale or 1 mg/L*
|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
|Standard Design||General Purpose|
|Available Options||ATEX, IECEx, EAC|
|Please inquire with your sales representative for additional certifications (CSA, FM etc.).|