The default version of the OMA Process Analyzer is provided in a wall-mounted enclosure. The system is highly customizable including options for enclosures, wetted materials, and hazardous area classifications
The OMA is an industrial device which measures a high-resolution absorbance spectrum in a continuously drawn sample from a liquid or gas process stream. Harvesting this rich data, the OMA provides real-time analytics for the process stream, including chemical concentrations, purity, and color.
Chemical concentrations The OMA can simultaneously monitor up to 5 chemicals in the sample stream. All analytes must have distinct absorbance curves in the wavelength range of the OMA
Chemical purity By measuring a high-resolution transmittance spectrum, the OMA can very precisely detect impurities in the sample fluid by sudden changes in the spectral structure.
Physical properties Various properties such as the heating value of a fuel or the octane of a gasoline blend can be powerfully correlated to the absorbance spectrum of the sample.
Technical Data
Measurement Principle
Dispersive UV-Vis / SW-NIR absorbance spectrophotometry
Detector
nova II™ Spectrophotometer
Spectral Range
200-800 nm (UV-Vis model) or 400-1100 nm (SW-NIR model)
Light Source
Standard: pulsed xenon lamp with average 5 year lifespan
Fiber Optic Cables
Standard: 600 μm core 1.8 meter fiber optic cables (qty = 2)
Sample Medium
Gas or liquid
Sample Introduction
Standard: stainless steel 316L flow cell with application-dependent path length
Sample Conditioning
Custom design if necessary
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 or neutral density filters
Human Machine Interface
Applied Analytics standard HMI: industrial controller with touch-screen LCD display
User Interface
ECLIPSE™ Runtime Software
Data Storage
32GB Solid State Drive
Enclosure
Standard: wall-mounted, carbon steel NEMA 4 enclosure
Measuring Parameters
Repeatability
±0.5% of scale
Photometric Accuracy
±0.004 AU
Sample Conditions
Sample Temperature
Using immersion probe: -20 to 150 °C (-4 to 302 °F)
Using standard flow cell: -20 to 150 °C (-4 to 302 °F)
Using optional sample cooling: up to 1000 °C (1832 °F)
Sample Pressure (max)
Using immersion probe: 100 bar (1470 psig)
Using standard flow cell: 206 bar (3000 psi)
Ambient Conditions
Analyzer Environment
Indoor/Outdoor (no shelter required)
Ambient Temperature
Standard: 0 to 35 °C (32 to 95 °F)
With optional temperature control: -20 to 55 °C (-4 to 131 °F)
To avoid radiational heating, use of a sunshade is recommended for systems installed in
direct sunlight.
Physical Specifications
Dimensions
Analyzer: 24” H x 20” W x 8” D (610mm H x 508mm W x 203mm D)
SCS (if included): custom size
Weight
Analyzer: 32 lbs. (15 kg)
SCS (if included): variable depending on custom build
Wetted Materials
Standard: K7 glass, Viton, stainless steel 316L
Various custom materials available
Utility Requirements
Electrical Requirements
85 to 264 VAC 47 to 63 Hz
Power Consumption
45 watts
Outputs/Communication
Outputs
1x galvanically isolated 4-20mA analog output per measured analyte
2x digital outputs for fault and SCS control
Optional: Modbus TCP/IP; RS-232; RS-485; Fieldbus; Profibus; HART; more
I/O Electronics
Voltage/Current Interface Module (i.e. I/O Board)