GreenPrima PROCO N2000 Online Colorimeter

Overview

The GreenPrima PROCO N2000 Online Colorimeter is an industrial-grade, in-line optical analyzer engineered for continuous, real-time measurement of color intensity in liquid streams using UV-VIS absorption spectroscopy. It operates on the principle of spectrophotometric quantification of absorbance at defined wavelengths (typically 430 nm, 520 nm, and 620 nm), calibrated against the Platinum-Cobalt (Pt-Co) scale per ISO 6271 and ASTM D1209 standards. Designed for unattended operation in demanding environmental and process monitoring applications, the instrument delivers traceable, repeatable color assessment without chemical reagents or sample digestion—making it compliant with modern green analytical chemistry principles and regulatory expectations for zero-reagent wastewater monitoring.

Key Features

• Ultra-low detection limit optimized for subtle color shifts in low-turbidity matrices (e.g., drinking water, clarified effluent)
• Flexible operational modes: manual on-demand measurement, programmable定时 sampling (e.g., every 1–60 minutes), and continuous flow-through analysis
• Reagent-free operation—eliminates hazardous chemical handling, disposal costs, and secondary contamination risks
• Extended service life: LED light source rated for >10 years (≥100,000 hours); no consumables required during normal operation
• Patented optical flow cell with quartz cuvette and fluoropolymer-wetted surfaces (FPM) ensures immunity to fouling, particulate interference, and cross-contamination from suspended solids or biofilm
• Sub-5-second measurement cycle with full auto-sequence execution: auto-zero, auto-calibration (via internal reference path), auto-measurement, auto-rinse, and self-diagnostic recovery
• Maintenance-free prefiltration module—no moving parts, no filter replacements, no scheduled cleaning intervals under nominal operating conditions

Sample Compatibility & Compliance

The PROCO N2000 is validated for direct installation in pressurized or gravity-fed liquid lines across municipal, industrial, and marine environments. Compatible matrices include treated and raw wastewater, surface water, seawater (with optional salinity compensation), potable water, pulp & paper process liquors, textile dye baths, and pharmaceutical rinse waters. All wetted materials comply with USP Class VI and FDA 21 CFR §177.2600 for food-contact safety; the flow path is constructed from fused quartz, PP, FPM fluoroelastomer, 316L stainless steel, and borosilicate glass. The system meets IP65 ingress protection and offers optional ATEX Zone 1/2 certification (II 2G Ex db IIB T4 Gb) for hazardous area deployment. Data integrity adheres to GLP/GMP-aligned audit trail requirements via timestamped SD card logging and Modbus RTU event registers.

Software & Data Management

The embedded controller features an 8.5-inch 16:9 TFT color touchscreen (800 × 480 resolution) with intuitive icon-driven navigation and multilingual UI support (English, German, French, Spanish). Internal 8 GB SD card stores ≥12 months of high-resolution time-series data (color value, temperature, pressure, status flags) at user-defined intervals. Data export is supported via USB 2.0 mass storage mode. Analog 4–20 mA output provides galvanically isolated, NIST-traceable transmission with ≤0.5% full-scale linearity error. RS485 Modbus RTU interface enables integration into SCADA, DCS, or cloud-based IIoT platforms (e.g., Siemens Desigo, Emerson DeltaV, Ignition SCADA). Relay outputs support configurable alarm logic (high/low limits, rate-of-change, sensor fault) with dry-contact ratings up to 5 A @ 277 VAC.

Applications

• Municipal wastewater treatment: real-time monitoring of effluent color compliance prior to discharge (e.g., EU Urban Wastewater Directive Annex I)
• Pulp & paper industry: tracking chromophore release during bleaching stages and optimizing oxidant dosing
• Textile manufacturing: closed-loop control of dye bath consistency and post-rinse clarity verification
• Pharmaceutical water systems: USP TOC surrogate validation where color correlates with organic load
• Drinking water utilities: early detection of humic/fulvic acid breakthrough in activated carbon filters
• Marine ballast water management: verification of UV disinfection efficacy via post-treatment color stability

FAQ

What color scales does the PROCO N2000 support?
The instrument reports results in Pt-Co (Hazen) units per ISO 6271; custom calibration to APHA, Gardner, or Saybolt scales is available upon request.
Can it operate under variable flow or pressure conditions?
Yes—the flow cell is rated for 0–2 L/min and ≤2 bar; integrated pressure and temperature compensation ensures stable readings across dynamic hydraulic conditions.
Is remote firmware update supported?
Firmware updates are performed locally via USB stick; over-the-air (OTA) updates are not implemented to maintain cybersecurity compliance in critical infrastructure deployments.
How is calibration traceability maintained?
Factory calibration uses NIST-traceable liquid standards; users may perform field verification with certified Pt-Co reference solutions (e.g., Hach Color Standards); all calibrations are logged with operator ID, timestamp, and deviation metrics.
Does the system meet FDA 21 CFR Part 11 requirements?
While the PROCO N2000 supports ALCOA+ data integrity principles (Attributable, Legible, Contemporaneous, Original, Accurate), full Part 11 compliance requires integration with a validated electronic record system—GreenPrima provides IQ/OQ documentation packages for qualified installations.