AAI’s metal ion analyzer continuously draws a liquid sample and outputs real-time concentrations of metal ions including copper, iron, nickel, chromium, and cobalt.
From mining to electroplating, a wide range of processes require online monitoring of metal ions in solution. The traditional lab method for measuring metal ions uses atomic absorption spectroscopy, which comes with slow results, expensive instrumentation, and human involvement.
The OMA system provides always-online analysis of trace-to-high metal ion concentrations at the site. This fully automated solution provides real-time response. The flexibility of full-spectrum analysis allows the user to add/ remove metal ion measurements or modify measurement ranges at any time.
To measure metal ions' concentrations, the OMA detects the distinctive absorbance curves of each measured metal and mathematically isolates this structure from the total sample absorbance. In accordance with Beer-Lambert Law, the OMA correlates the height of each curve directly to its corresponding real-time metal concentration.
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.
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|
|Response Time||1-5 seconds|
|Zero Drift||±0.1 % after 1hr warm-up, measured over 24hrs (constant ambient temperature)|
|Sensitivity||±0.1 % full scale|
|Noise||±0.004 AU at 220 nm|
Example ranges below. Custom ranges available.
|Cu2+||0-100 ppm: ±1 ppm|
|Ni2+||0-100 ppm: ±1 ppm|
|Fe2+||0-100 ppm: ±1 ppm|
|Cr6+||0-100 ppm: ±1 ppm|
|Co2+||0-100 ppm: ±1 ppm|
|Standard Design||General Purpose|
|Available Options||ATEX, IECEx, EAC, PESO|
|Please inquire with your sales representative for additional certifications (CSA, FM etc.).|