Applied Analytics OIW-100 Oil in Water Analyzer

Overview

The Applied Analytics OIW-100 is a continuous online oil-in-water analyzer that uses full-spectrum UV-Vis diode array spectroscopy to monitor aromatic hydrocarbon content in refinery, gas plant, and produced-water discharge streams. Unlike conventional single-wavelength fluorescence or turbidity-based oil-in-water monitors that read only at 254nm, the OIW-100 captures a complete absorbance spectrum across 250–320nm, correlating it to total petroleum concentration and substantially reducing false readings caused by non-oil interferents in the sample matrix.

With engineering support in Muscat, Seven Star LLC supplies the OIW-100 to refineries, gas processing plants, and produced-water treatment facilities across the Sultanate of Oman and the wider GCC. Every unit supplied through Seven Star LLC comes with manufacturer documentation and access to regional technical support.

Operating Principle

The Applied Analytics OIW-100 uses dispersive UV-Vis absorbance spectrophotometry to measure aromatic hydrocarbon absorbance across the 250–320nm wavelength range rather than at a single fixed point. A long-lifespan xenon lamp, rated for approximately five years of continuous service, illuminates the sample flow cell, and a diode array detector captures the full absorbance spectrum for correlation against a customer-specific calibration built from the operator’s own oil composition. This full-spectrum approach lets the analyzer distinguish the true oil signature from background absorbance contributed by dissolved organics, suspended solids, or other non-oil compounds that commonly cause false alarms on simpler single-wavelength instruments.

Because the design is entirely solid-state with no moving parts, filter wheels, or lamps that require periodic mechanical alignment, the OIW-100 delivers a fast 10-second measurement cycle with automatic zeroing that normalizes each reading against background drift. The practical consequences for a facility running continuous wastewater compliance monitoring are minimal maintenance intervention, a documented zero drift of only ±0.1% after a one-hour warm-up, and sensitivity to ±0.1% of full scale – performance that lets the analyzer catch a genuine oil upset quickly while avoiding nuisance trips from unrelated water-quality noise.

Engineering Design of the Applied Analytics OIW-100

The Applied Analytics OIW-100 analyzer housing measures 24″H × 20″W × 8″D and weighs 32 lbs, drawing only 45 watts of power – low enough to run continuously from a standard instrument power circuit without dedicated conditioning. The Applied Analytics OIW-100 sample flow cell is rated for sample temperatures from -20°C to 150°C and sample pressures up to 206 bar (3,000 psi), giving the OIW-100 the pressure and temperature headroom to sit directly on a live process or effluent line rather than requiring a slip-stream sample conditioning skid in many applications.

Standard 4-20mA analog outputs are provided as-shipped for direct integration with a plant DCS or PLC, with Modbus TCP/IP and Fieldbus available as configured options for facilities standardizing on digital communication. The customer-sample calibration procedure – performed at the factory using an actual sample of the operator’s process oil rather than a generic surrogate – is what gives the Applied Analytics OIW-100 its measurement accuracy of ±2% of full scale over a 0–20mg/L range, since the calibration curve is built around the specific hydrocarbon signature the plant will actually discharge rather than a manufacturer’s default reference oil.

Key Features

The Applied Analytics OIW-100 brings laboratory-grade oil-in-water accuracy to continuous online monitoring. Its principal capabilities include:

• The Applied Analytics OIW-100 measures aromatic hydrocarbon content across a full 250–320nm UV-Vis spectrum rather than a single fixed wavelength, reducing false readings from non-oil interferents.
• A solid-state optical design with no moving parts delivers a fast 10-second response time and minimizes routine maintenance intervention.
• Customer-sample factory calibration correlates the measurement directly to the operator’s actual process oil composition for accurate compliance-grade readings.
• Automatic zeroing normalizes each measurement against background drift, holding zero drift to ±0.1% after a one-hour warm-up.
• The sample flow cell handles temperatures from -20°C to 150°C and pressures up to 206 bar, allowing direct installation on many live process or effluent lines.
• A long-lifespan xenon lamp rated for approximately five years of service reduces the frequency of light-source replacement compared with shorter-lived lamp technologies.
• Standard 4-20mA analog output is complemented by optional Modbus TCP/IP and Fieldbus connectivity for direct DCS or PLC integration.
• Sensitivity and noise performance of ±0.1% full scale (0.004 AU at 220nm) supports reliable detection of oil concentrations down to the low single-digit mg/L range.

Industrial Applications

Refineries, gas processing plants, and produced-water treatment facilities across Oman deploy the Applied Analytics OIW-100 analyzer for continuous compliance monitoring of wastewater discharge, validating that treated effluent meets environmental permit limits before release to a marine outfall or reuse system. Process engineers also use the Applied Analytics OIW-100 to detect upstream equipment failures – a failing oil-water separator, a compromised heat exchanger, or a upset desalter – by catching the resulting oil carryover in real time rather than discovering it during a periodic grab-sample laboratory analysis, and to verify that recycled or reused water meets the oil-content specification required for cooling tower makeup or other reuse applications.

Backed by genuine manufacturer documentation, Seven Star LLC supplies the Applied Analytics OIW-100 to refineries and gas plants throughout Muscat, the Sohar Refinery and Petrochemical Complex, the Salalah Free Zone, and produced-water treatment operations across the wider GCC. Regional environmental and process teams rely on Seven Star LLC not only for the initial Applied Analytics OIW-100 supply but for customer-sample recalibration support, spare flow cells, and technical guidance that keep a compliance monitoring program defensible across a multi-site operation in Oman and neighboring GCC states.

Technical Specifications

The table below summarizes the principal specifications of the Applied Analytics OIW-100 oil-in-water analyzer.

Request a Quote for Applied Analytics OIW-100 Oil in Water Analyzer

Facility environmental engineers and procurement teams evaluating the Applied Analytics OIW-100 for wastewater compliance monitoring or reuse-water verification are invited to submit a formal RFQ through Seven Star LLC’s instrumentation division. Working closely with plant engineers in the region, Seven Star LLC supplies on request with lead time confirmed at quotation, provides full technical datasheets on request, and coordinates customer-sample calibration questions directly with the manufacturer. Contact the Seven Star LLC instrumentation team today to confirm lead times, request the complete OIW-100 datasheet, and place an order for delivery across Muscat, Sohar, Salalah, and the wider GCC region.

Browse the full Applied Analytics range or see more Gas Analyzer Systems products supplied by Seven Star LLC in Oman and the GCC.