GreenPrima PR OCON7000 Online Oil-in-Water Analyzer

Overview

The GreenPrima PR OCON7000 Online Oil-in-Water Analyzer is a dedicated, fluorescence-based optical instrument engineered for continuous, real-time monitoring of hydrocarbon contamination in aqueous process and effluent streams. Unlike extractive or gravimetric methods, the PR OCON7000 employs a non-contact, in-situ measurement principle: it detects native fluorescence emissions from aromatic hydrocarbons (e.g., mineral oils, diesel, lubricants) when excited by UV light within a flow-through quartz cell. This approach eliminates solvent use, reagent consumption, and sample preparation—enabling true unattended operation with high repeatability (±2 ppm accuracy) across dynamic industrial environments. Designed for integration into closed-loop cooling water systems, boiler condensate lines, and regulated wastewater discharge points, the analyzer meets functional requirements for early leak detection, compliance verification, and preventive maintenance in energy-intensive facilities including power generation plants, refineries, and manufacturing sites.

Key Features

• Automated self-diagnostic routine and real-time drift compensation ensure long-term stability without manual recalibration.
• Adjustable measurement interval (1–3600 seconds) supports both rapid response to transient events and low-frequency trend logging.
• Intuitive 240 × 128 pixel resistive touchscreen interface with multilingual menu navigation (English, German, French, Spanish).
• Configurable dual-stage alarm logic with independent delay timers (Alarm 1: 0–60 s; Alarm 2: 10–240 s) for tiered operational response.
• Isolated analog outputs (0/4–20 mA and 0–5 V / 1–5 V DC) compatible with DCS, PLC, and SCADA systems; minimum load specifications ensure signal integrity under field conditions.
• IP55-rated enclosure with external terminal block (IP65-rated connector) for relay outputs (alarm, limit, analysis trigger), analog signals, and external start/stop control.
• No consumables or reagents required; maintenance limited to periodic optical window inspection and optional cleaning protocol per ISO 17025-recommended intervals.

Sample Compatibility & Compliance

The PR OCON7000 is validated for use with freshwater, demineralized water, and low-turbidity industrial process waters containing total suspended solids (TSS) < 50 ppm. It demonstrates robust performance in engine cooling circuits, steam condensate return lines (with optional inline cooler), and regulated groundwater discharge streams. While not certified to ASTM D7622 or ISO 9377-2 for laboratory-grade quantification, its fluorescence response correlates reliably with standard reference oils (e.g., IRM 905, Shell Calibrating Oil) under controlled flow and temperature conditions (1–40 °C, 0.1–2 L/min). The device complies with EN 61010-1 for electrical safety and IEC 664 Category II overvoltage protection. Its design supports audit-ready documentation per GLP/GMP-aligned operational protocols, including timestamped event logs and configuration change tracking.

Software & Data Management

Data acquisition occurs continuously at user-defined intervals, with internal storage retaining up to 30 days of 1-minute averaged readings (including raw fluorescence intensity, temperature, pressure, and alarm status). USB data export (optional module) enables CSV-formatted retrieval for post-processing in Excel or LIMS-compatible platforms. No proprietary software is required: configuration is performed locally via touchscreen or remotely via Modbus RTU (RS-485) interface. All parameter changes—including alarm thresholds, output scaling, and sampling frequency—are logged with timestamps and operator ID (if enabled via external authentication system), satisfying basic FDA 21 CFR Part 11 traceability expectations for non-critical environmental monitoring applications.

Applications

• Leak detection in lubricating oil coolers and heat exchangers within turbine and reciprocating engine systems.
• Real-time monitoring of boiler feedwater and condensate return lines to prevent oil-induced corrosion and efficiency loss.
• Compliance-driven surveillance of treated industrial wastewater prior to municipal sewer discharge or surface water release.
• Groundwater remediation site monitoring where hydrocarbon plume migration must be tracked against regulatory action levels (e.g., EPA Region 3 Tier 1 screening values).
• Preventive maintenance support in marine engine rooms, offshore platform cooling loops, and district heating networks.

FAQ

Does the PR OCON7000 require periodic calibration with certified oil standards?
No. The instrument uses factory-calibrated optical path geometry and stable UV LED excitation. Drift compensation is performed automatically during each measurement cycle using internal reference channels. Field verification with traceable standards is recommended annually per ISO/IEC 17025 quality management practices.
Can the analyzer operate with highly turbid or colored water samples?
Performance degrades above 50 ppm TSS or strong chromophore interference (e.g., humic acids, dye effluents). For such matrices, inline filtration (5 µm) or UV-absorption correction modules are advised.
Is the 4–20 mA output intrinsically safe for hazardous area installation?
No. The PR OCON7000 is rated for general-purpose industrial environments (IP55). For Zone 1/2 installations, an approved intrinsic safety barrier must be installed upstream of the analog output terminals.
What is the expected service life of the UV excitation source?
The solid-state UV LED has a rated lifetime of >20,000 hours under continuous operation at nominal current, corresponding to approximately 2.3 years of uninterrupted use.
How does ambient temperature variation affect measurement stability?
Internal temperature compensation algorithms correct for thermal drift across the 1–60 °C operating range. However, rapid ambient fluctuations (>5 °C/min) may temporarily impact baseline stability until thermal equilibrium is restored.