GreenPrima PROCON2000 Online Colorimeter

Overview

The GreenPrima PROCON2000 Online Colorimeter is an industrial-grade, real-time color measurement system engineered for continuous, reagent-free monitoring of liquid color in aqueous process streams. It operates on the principle of UV-VIS absorption spectroscopy—measuring spectral absorbance across the 200–800 nm range to quantify color intensity according to standardized Pt-Co (Platinum-Cobalt) units. Unlike offline benchtop colorimeters or subjective visual assessment, the PROCON2000 delivers traceable, metrologically robust measurements directly in-line or at-stream, eliminating sampling bias and time lag. Its design targets applications where color serves as a critical quality indicator or surrogate parameter for organic load, oxidation state, or process consistency—particularly in municipal wastewater treatment, industrial effluent discharge compliance, potable water distribution, and marine environmental monitoring.

Key Features

• Reagent-free operation: No chemical dosing, zero secondary waste generation, fully compliant with green analytical chemistry principles.
• Multi-mode measurement scheduling: Supports manual-on-demand, programmable timed intervals, and continuous cyclic acquisition—configurable via embedded HMI or remote SCADA integration.
• High-stability optical architecture: Dual-beam UV-VIS photometric path with temperature-compensated deuterium/halogen light sources (rated >10 years MTBF), quartz flow cell, and solid-state detector array.
• Robust sample interface: Patented cross-interference-resistant flow cell geometry minimizes fouling from suspended solids (e.g., activated sludge, algae, colloidal iron); compatible with turbidities up to 500 NTU without signal degradation.
• Sub-5-second measurement cycle: Full spectral acquisition, baseline correction, Pt-Co conversion, and data logging completed within <5 s—meeting ISO 7887:2011 and ASTM D1209 requirements for rapid color quantification.
• Autonomous system management: Integrated self-diagnostic routines include automatic zero calibration (using air or reference solvent), span verification, optical window cleaning via pulsed air/water purge, and fault-triggered recovery protocols.
• Low-maintenance pre-treatment module: Passive filtration and flow conditioning—no moving parts, no consumable filters, no scheduled replacement intervals.

Sample Compatibility & Compliance

The PROCON2000 accommodates a broad range of aqueous matrices: clarified and raw wastewater, drinking water post-filtration, seawater, pulp mill process liquors, textile dye baths, and pharmaceutical rinse waters. Wetted materials—including quartz optical windows, PP and FPM wetted seals, 316L stainless steel housing, and borosilicate glass components—ensure chemical resistance to pH 2–12, oxidants (e.g., chlorine, ozone), and common organic solvents. The instrument meets IP65 ingress protection for outdoor cabinet installation and offers optional ATEX-certified variants (Zone 1/2, II 2G Ex db IIB T4 Gb) for hazardous area deployment. Data integrity complies with GLP/GMP-aligned audit trail requirements; all calibrations, maintenance events, and measurement logs are timestamped and stored with user authentication.

Software & Data Management

The onboard controller features an 8.5″ 800×480-pixel capacitive touchscreen with intuitive icon-driven navigation and multilingual UI (English, German, French, Spanish). All configuration, diagnostics, and historical trend review occur locally—no cloud dependency. Raw spectra and processed Pt-Co values are logged to internal 8 GB SD card (FAT32 formatted) with configurable retention policies (up to 12 months at 1-min intervals). Data export is supported via USB 2.0 mass storage mode. Analog (4–20 mA, isolated, ±0.5% accuracy), relay (programmable alarm thresholds), and RS485 Modbus RTU (Slave/Master) interfaces enable seamless integration into DCS, PLC, or SCADA systems. Firmware updates are performed via signed .bin files to ensure cryptographic integrity.

Applications

• Municipal wastewater: Real-time detection of color spikes indicating sewer infiltration, industrial dumping, or treatment upsets in primary/secondary clarifiers and final effluent channels.
• Pulp & paper industry: Monitoring bleach plant effluent color (kappa number correlation), COD estimation in brownstock wash water, and brightness control in coating slurries.
• Textile manufacturing: In-line verification of dye bath exhaustion efficiency, rinsing endpoint detection, and regulatory reporting for ZDHC MRSL compliance.
• Drinking water utilities: Early warning of humic/fulvic acid breakthrough in granular activated carbon (GAC) filters or coagulation performance drift.
• Pharmaceutical & biotech: Cleaning-in-place (CIP) validation via rinse water color clearance; non-destructive release testing of colored APIs or excipients.

FAQ

What color scales does the PROCON2000 support?
It reports in Pt-Co (Hazen) units by default, with factory-calibrated ranges of 0–100 Pt-Co and 0–2000 Pt-Co. Custom calibration curves for APHA, Gardner, or custom spectral indices can be loaded via firmware update.
Can it operate in high-turbidity or aerated streams?
Yes—the flow cell’s hydrodynamic design and dual-beam compensation mitigate scattering effects up to 500 NTU; dissolved air has negligible impact on UV-VIS absorbance below saturation.
Is regulatory validation documentation available?
Yes—each unit ships with a Factory Calibration Certificate traceable to NIST SRM 2105, plus a full IQ/OQ protocol package for GxP environments.
How often is recalibration required?
Under stable operating conditions, annual verification against certified Pt-Co standards is recommended; automated daily zero checks maintain long-term drift <±1% FS/year.
Does it support remote firmware updates or diagnostics?
Firmware updates require local USB access for security; however, Modbus registers expose real-time diagnostics (lamp intensity, detector SNR, cleaning cycle status) for remote health monitoring.