GreenPrima P STAB 500 UV-VIS Absorption Colorimeter for Industrial Wastewater Monitoring
| Brand | GreenPrima |
|---|---|
| Origin | United Kingdom |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Imported Instrument |
| Model | P STAB 500 |
| Pricing | Available Upon Request |
Overview
The GreenPrima P STAB 500 is a high-precision, online UV-VIS absorption colorimeter engineered for continuous colorimetric monitoring of industrial and municipal liquid streams — particularly chemically complex wastewater from chemical processing, pulp & paper, textile dyeing, and pharmaceutical manufacturing. Unlike conventional electromagnetic flowmeters (which measure volumetric flow via Faraday’s law), the P STAB 500 applies standardized UV-VIS spectrophotometric absorption principles (per ISO 7887, ASTM D1209, and APHA Standard Method 2120B) to quantify color intensity in Pt-Co (Hazen) units. Its optical architecture employs dual-beam referencing with stabilized deuterium/tungsten light sources and thermally compensated photodiode detection, enabling robust quantification of chromophore concentration even in turbid, suspended-solid-laden effluents where traditional filtration-based methods fail.
Key Features
- True zero-reagent operation: No chemical reagents, no consumables, no secondary waste generation — compliant with ISO 14001 environmental management requirements.
- Multi-mode measurement protocol: Supports manual spot-checking, programmable timed cycles (1–1440 min intervals), and event-triggered sampling synchronized with process control systems.
- Patented anti-fouling flow cell: Quartz optical path combined with hydrodynamic self-cleaning geometry minimizes biofilm and particulate deposition; validated for >12 months uninterrupted operation in activated sludge effluent (MLSS up to 4,000 mg/L).
- Full automation suite: Auto-zero calibration against clean water reference, auto-compensation for lamp drift, auto-flush with pressurized air/water, and diagnostic-driven maintenance alerts.
- Long-life optical subsystem: UV-VIS broadband source rated for >100,000 hours (≥11.4 years at 24/7 operation); no lamp replacement required within typical instrument service life.
- Ruggedized industrial enclosure: IP65-rated stainless steel (1.4435 / SS316L) housing with optional ATEX Zone 1/2 certification for hazardous area deployment.
Sample Compatibility & Compliance
The P STAB 500 is validated for direct in-line or sidestream analysis of raw and treated wastewater, seawater, surface water, and potable water matrices. It accommodates sample temperatures from 0 °C to 50 °C, pressures up to 2 bar, and flow rates between 0–2 L/min. Wetted materials — including fused silica cuvettes, polypropylene manifolds, FPM (Viton®) seals, and 316L stainless steel fittings — ensure chemical resistance to strong acids (pH ≥1), alkalis (pH ≤13), oxidants (e.g., chlorine, ozone), and organic solvents commonly present in chemical plant effluents. The system meets CE marking requirements, complies with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU, and supports audit-ready data integrity per FDA 21 CFR Part 11 when configured with secure user authentication and electronic signature modules.
Software & Data Management
The embedded controller features an 8.5″ TFT color touchscreen (800 × 480 px) with intuitive HMI navigation and real-time spectral visualization. Internal 8 GB SD card logs timestamped absorbance spectra (190–800 nm), calculated Pt-Co values, diagnostic flags, and calibration history with millisecond-level resolution. Data export is supported via USB mass storage or Modbus RTU over RS485 (slave/master configurable). Analog 4–20 mA output provides galvanically isolated, NIST-traceable analog transmission with <0.5% FS accuracy. Optional OPC UA integration enables seamless connectivity to SCADA, DCS, or cloud-based IIoT platforms (e.g., Siemens MindSphere, Rockwell FactoryTalk).
Applications
- Real-time color endpoint detection in bleach plant effluent (pulp & paper)
- Process feedback control of dye bath exhaustion in textile wet processing
- Regulatory compliance reporting for color discharge limits under EU Urban Wastewater Treatment Directive (91/271/EEC)
- Treatment efficiency verification across coagulation-flocculation and advanced oxidation processes
- Early warning detection of accidental chemical spills or process upsets in multi-stream chemical facilities
FAQ
Does the P STAB 500 require daily calibration or manual intervention?
No — it performs automatic zero-reference calibration using integrated clean-water flush cycles and compensates for optical drift in real time. Scheduled maintenance is recommended every 6 months for seal inspection and flow-path verification.
Can it operate reliably in high-turbidity wastewater with suspended solids?
Yes — its dual-beam design and optimized flow cell geometry mitigate scattering artifacts; validation data confirms ±5% FS repeatability in samples with NTU >200 when used with optional inline ultrasonic degassing module.
Is remote firmware update supported?
Yes — firmware upgrades can be deployed via USB or secure HTTPS interface with version rollback capability and SHA-256 signature verification.
What regulatory standards does its measurement methodology align with?
It implements APHA 2120B (Platinum-Cobalt Scale), ISO 7887:2011 (Water quality — Determination of colour), and ASTM D1209-19 (Standard Test Method for Color of Clear Liquids), with documented uncertainty budgets traceable to NPL (UK) reference standards.
How is cybersecurity addressed in network-connected configurations?
Role-based access control (RBAC), TLS 1.2 encrypted web interface, disabled default credentials, and configurable password policies meet IEC 62443-3-3 SL2 requirements for industrial control systems.
