GreenPrima PROCON2000 UV-VIS Absorption-Based Water Colorimeter

Overview

The GreenPrima PROCON2000 is a high-precision, in-line water colorimeter engineered for continuous, reagent-free measurement of color in aqueous matrices using ultraviolet–visible (UV-VIS) absorption spectroscopy. It operates on the principle of spectrophotometric quantification at standardized wavelengths (typically 455 nm for Pt-Co scale compliance), correlating absorbance to color intensity in accordance with internationally recognized methods—including ISO 7887:2011, ASTM D1209, and APHA Standard Methods 2120B. Designed for permanent installation in municipal wastewater treatment plants, industrial effluent streams, drinking water distribution networks, seawater desalination pre-treatment zones, and surface water monitoring stations, the PROCON2000 delivers stable, traceable color data without chemical addition or sample dilution. Its optical architecture integrates a stabilized tungsten-halogen light source, precision quartz flow cell, and thermally compensated photodiode array detector—ensuring long-term baseline stability and minimal drift over extended operational cycles.

Key Features

• Reagent-free operation: Eliminates consumables, hazardous waste generation, and calibration drift associated with wet-chemistry methods
• Multi-mode measurement protocol: Supports manual spot-checking, programmable timed acquisition (1–1440 min intervals), and continuous real-time monitoring
• Ultra-low maintenance design: LED-stabilized broadband source rated for >10 years MTBF; no lamps, filters, or reagents to replace
• Robust optical flow path: Patented laminar-flow quartz cuvette minimizes particulate interference and eliminates cross-contamination from suspended solids or biofilm buildup
• Sub-5-second measurement cycle: Full spectral acquisition, zero correction, and Pt-Co conversion completed within 4.8 seconds
• Intelligent self-management: Fully automated zeroing, multi-point calibration verification, air-purge cleaning sequence, fault diagnostics, and graceful recovery from power interruption
• Preconditioning module: Integrated passive filtration and bubble removal—no moving parts, no scheduled servicing required

Sample Compatibility & Compliance

The PROCON2000 accommodates raw and clarified waters across a broad physicochemical spectrum: municipal sewage (primary/secondary effluent), pulp & paper mill bleach plant discharges, textile dye-house outfalls, pharmaceutical process rinse waters, and potable water post-chlorination. Sample contact materials—quartz optical path, polypropylene housing, FPM (fluoroelastomer) seals, 316L stainless steel fittings, and borosilicate glass components—meet USP Class VI and FDA 21 CFR 177.2400 requirements. The instrument complies with IP65 ingress protection, ATEX Zone 1/2 non-incendive certification (II 2G Ex db IIB T4 Gb), and electromagnetic compatibility per EN 61326-1:2013. Data integrity protocols support GLP/GMP environments through audit-trail-enabled firmware (21 CFR Part 11 ready with optional digital signature module).

Software & Data Management

Embedded firmware provides local configuration via an 8.5-inch TFT capacitive touchscreen (800 × 480 resolution, sunlight-readable LED backlight) with intuitive icon-driven navigation. All measurement metadata—including timestamp, temperature-compensated absorbance values, calibration history, diagnostic logs, and cleaning event records—are stored on an internal 8 GB industrial-grade microSD card. Data export is supported via USB 2.0 mass storage mode or Modbus RTU over RS485 (slave/master configurable). Analog 4–20 mA output meets IEC 61000-4-4 surge immunity standards and supports direct integration into SCADA, DCS, or PLC systems. Optional cloud-connectivity gateway enables remote firmware updates, threshold-based SMS/email alerts, and time-series visualization via secure HTTPS REST API.

Applications

• Municipal wastewater: Real-time tracking of color breakthrough during tertiary filtration or activated carbon adsorption
• Pulp & paper industry: Monitoring lignin-derived chromophores in bleach plant effluents to optimize chlorine dioxide dosing
• Textile manufacturing: Quantifying residual dye carryover in rinse waters for closed-loop water reuse compliance
• Pharmaceutical utilities: Ensuring color absence in purified water (PW) and water-for-injection (WFI) per USP
• Drinking water treatment: Detecting humic/fulvic acid breakthrough post-coagulation-flocculation-sedimentation
• Environmental monitoring: Long-term trend analysis of colored dissolved organic matter (CDOM) in estuarine and coastal zones

FAQ

What color scales does the PROCON2000 report in?
It natively reports in Pt-Co (Hazen) units across two factory-configured ranges: 0–100 and 0–2000 Pt-Co. Custom scales—including Gardner, Saybolt, and ASTM D1209-compliant extended ranges—are available via firmware configuration.
Does the analyzer require periodic recalibration?
No routine recalibration is needed. The system performs automatic optical zeroing before each measurement and includes built-in reference validation checks against NIST-traceable liquid standards (optional accessory kit). Annual verification per ISO/IEC 17025 is recommended for accredited labs.
Can it operate under variable pressure or flow conditions?
Yes. The flow cell is rated for continuous operation at pressures up to 2 bar and flow rates between 0.1–2.0 L/min. An integrated flow sensor triggers alarm states outside this envelope but does not interrupt measurement integrity.
Is the controller suitable for outdoor installation?
The stainless steel (1.4435 / SS316L) enclosure meets IP65 and ATEX Zone 2 requirements, enabling wall-mount deployment in covered outdoor enclosures or climate-controlled kiosks without additional housing.
How is data traceability ensured for regulatory submissions?
All measurements are time-stamped with UTC synchronization capability, include operator ID fields, and generate immutable binary logs with cryptographic checksums—fully compatible with electronic record retention policies under 21 CFR Part 11 when paired with validated user access controls.