GreenPrima PROCON 2000 Online Colorimeter for Textile Industry

Overview

The GreenPrima PROCON 2000 Online Colorimeter is an industrial-grade, UV-VIS absorption-based optical analyzer engineered for real-time colorimetric monitoring in continuous liquid streams. Designed specifically for high-precision applications in textile dyeing and finishing processes, it quantifies color deviation using the standardized Pt-Co (Platinum-Cobalt) scale—also known as APHA color units—enabling trace-level detection of chromophore concentration shifts during production or effluent treatment. Unlike benchtop spectrophotometers, the PROCON 2000 operates in true online mode: integrated directly into process lines or bypass loops, it delivers non-invasive, reagent-free measurement without flow interruption. Its optical architecture employs a stabilized tungsten-halogen light source and dual-beam photometric detection to compensate for lamp drift and window fouling, ensuring long-term baseline stability. The instrument conforms to ISO 7887:2011 (Water quality — Examination of colour), ASTM D1209 (Standard Test Method for Color of Clear Liquids), and supports compliance with textile industry wastewater discharge limits under EU Directive 2008/105/EC and China’s GB 4287–2012.

Key Features

• Reagent-free operation: Eliminates chemical consumption, hazardous waste generation, and associated disposal costs—fully aligned with ISO 14001 environmental management principles.
• Multi-mode measurement scheduling: Supports manual on-demand sampling, programmable time-based intervals (1 min to 24 h), and event-triggered acquisition (e.g., pH or flow threshold activation).
• Robust optical path design: Quartz flow cell with anti-fouling surface treatment; FPM (fluoroelastomer) seals and 316L stainless steel wetted parts ensure compatibility with aggressive dye baths, caustic rinses, and acidic scouring solutions.
• Self-maintaining intelligence: Fully automated zero calibration (using deionized water or process blank), span verification, optical window cleaning via pulsed air/water purge, and fault diagnostics with event-logged recovery sequences.
• High-speed photometric response: Full spectral acquisition and Pt-Co calculation completed in <5 seconds—enabling closed-loop feedback control integration with DCS or PLC systems.
• Extended service life: LED-stabilized halogen source rated for >10 years (≥87,600 operating hours); no consumables beyond optional replaceable filter cartridges (optional upgrade).

Sample Compatibility & Compliance

The PROCON 2000 accommodates a broad range of aqueous process streams common in textile manufacturing: reactive dye liquors (pH 10–12), reduction clearings (sodium hydrosulfite solutions), acid dye baths (pH 4–6), desizing effluents, and post-rinse waters. It maintains accuracy across turbidities up to 100 NTU due to its optimized optical geometry and cross-interference rejection algorithm—validated against suspended solids including starch, PVA, and cellulose microfibrils. All wetted materials comply with FDA 21 CFR 177.2400 (indirect food contact) and EU Regulation (EC) No. 1935/2004. The enclosure meets IP65 ingress protection and ATEX Zone 2 (II 2G Ex db IIB T4 Gb) or IECEx certification for safe deployment in classified areas adjacent to dye houses.

Software & Data Management

Embedded firmware supports dual-data-handling protocols: local storage on 8 GB industrial-grade SD card (retaining ≥12 months of 1-min resolution data at default logging rate) and secure remote access via Modbus RTU over RS485 (slave mode) or TCP/IP Ethernet (optional module). The 8.5″ TFT touchscreen interface provides intuitive configuration of alarm thresholds (high/low, rate-of-change), trend visualization (7-day rolling chart), and audit-trail-enabled calibration logs compliant with GLP and 21 CFR Part 11 requirements (when paired with optional password-protected user roles and electronic signature module). USB export enables CSV-formatted datasets compatible with LIMS platforms (e.g., LabWare, Thermo Fisher SampleManager) and statistical process control (SPC) tools such as Minitab or JMP.

Applications

• Real-time monitoring of dye bath exhaustion efficiency to optimize salt/alkali dosing and reduce batch-to-batch variation.
• Automated detection of rinse water clarity to trigger transfer to next stage—minimizing water consumption by up to 22% (verified in OEKO-TEX® certified facilities).
• Effluent pre-treatment validation: Quantifying color removal efficacy of ozonation, activated carbon filtration, or membrane bioreactors prior to municipal discharge.
• Quality gatekeeping for grey fabric incoming inspection—flagging excessive residual sizing or bleaching agents affecting subsequent dye uptake.
• Supporting ZDHC MRSL v3.0 conformance reporting through documented color stability metrics across wet processing steps.

FAQ

Does the PROCON 2000 require daily calibration?
No. Automatic zero and span calibration routines are scheduled weekly by default; manual intervention is only required after sensor replacement or major maintenance.
Can it measure beyond the standard 0–2000 Pt-Co range?
Yes. Custom optical filters and gain-adjusted firmware allow extended ranges up to 5000 Pt-Co upon factory configuration—subject to application-specific validation.
Is the flow cell compatible with high-salinity dye baths containing Na₂SO₄ or Na₂CO₃?
Yes. Quartz and 316L stainless steel construction ensures corrosion resistance at concentrations up to 200 g/L and temperatures up to 50°C.
How is data integrity ensured during power fluctuations?
The controller includes brown-out protection and non-volatile memory write caching to prevent data loss during momentary outages (<500 ms).
Can the unit be integrated into a Siemens S7-1500 PLC network?
Yes—via Modbus TCP/IP or optional PROFIBUS-DP gateway module (order code: PROCON-GW-PB).