GreenPrima Aqualysis 800 Online Water Hardness Analyzer

Overview

The GreenPrima Aqualysis 800 is a fully automated, online water hardness analyzer engineered for continuous or scheduled measurement of calcium and magnesium ion concentration in industrial and pharmaceutical water streams. It operates on the principle of endpoint titration coupled with photometric colorimetric detection—specifically, the reaction between hardness ions (Ca²⁺/Mg²⁺) and a standardized EDTA-based reagent, followed by precise optical quantification of the color transition at 520 nm using dual-wavelength photometry. This method conforms to ISO 6059 (Water quality — Determination of calcium and magnesium — EDTA titrimetric method) and supports compliance with USP (Water for Pharmaceutical Purposes) and ASTM D1126 (Standard Test Method for Hardness in Water). Designed for unattended operation in demanding environments, the Aqualysis 800 delivers high reproducibility (<±2% of selected reagent upper limit), minimal reagent consumption (≤1.2 mL per analysis), and robust performance across pH 4–10, making it suitable for boiler feedwater, cooling tower make-up, softened effluent, surface water monitoring, and purified water systems in GMP-regulated facilities.

Key Features

• Compact industrial enclosure (400 × 300 × 180 mm; 4 kg) rated IP65 for dust- and water-resistant deployment in utility corridors or outdoor skids
• Programmable measurement intervals from 1 to 360 minutes—or triggered externally via digital input or flow pulse signal
• Integrated self-diagnostic routines including reagent depletion alerts, photometer drift compensation, and valve actuation verification
• Two programmable digital inputs (IN1: start analysis; IN2: pause/abort) enabling synchronization with pump cycles or PLC-controlled sampling events
• Four configurable relay outputs (250 V AC / 4 A max) for alarm signaling, dosing control, or softener regeneration initiation
• Simultaneous analog (4–20 mA, load ≤750 Ω), digital (RS485 Modbus RTU), and local LCD display with multilingual interface (English, German, French, Spanish)
• User-selectable hardness units: °dH (German degrees), °f (French degrees), ppm CaCO₃, or mmol/L—automatically converted in real time
• Configurable rinse cycle (15–1800 s) to prevent cross-contamination in high-solids or variable-flow applications

Sample Compatibility & Compliance

The Aqualysis 800 is validated for use with clarified water samples meeting specified matrix constraints: dissolved iron <3 ppm, copper <0.2 ppm, aluminum <0.1 ppm, manganese <0.2 ppm, and temperature between 5°C and 40°C. Sample pressure must be maintained between 0.2–5 bar (optimal range: 1–2 bar) with stable flow to ensure consistent aspiration and reaction chamber filling. The analyzer complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions), and its firmware architecture supports audit trail generation and electronic signature capability per FDA 21 CFR Part 11 when deployed with optional secure software licensing. All calibration and maintenance logs are timestamped and stored onboard for ≥12 months, satisfying GLP/GMP data integrity requirements.

Software & Data Management

Data acquisition and system configuration are managed via an embedded web server accessible through standard browsers—no proprietary software installation required. Measurement history, fault codes, reagent usage logs, and calibration records are exportable as CSV files over HTTP or RS485. Optional integration with SCADA or MES platforms is supported via Modbus RTU mapping tables provided in the technical documentation. Firmware updates are performed securely via HTTPS with SHA-256 signature verification. The system maintains internal clock synchronization (NTP-compatible) and retains all critical parameters during power interruption due to non-volatile memory architecture.

Applications

• Real-time hardness monitoring of reverse osmosis permeate and mixed-bed polishers in pharmaceutical water systems
• Feedback control of sodium-cycle ion exchange softeners in power plant boiler feed circuits
• Process validation and routine surveillance of cooling water treatment programs in HVAC and industrial heat exchangers
• Regulatory compliance reporting for drinking water utilities under EU Directive 98/83/EC (Drinking Water Directive)
• Multi-point hardness profiling using MCS-series multi-channel selector modules (2–8 channels, shared reagent manifold)

FAQ

What measurement principle does the Aqualysis 800 employ?
It uses automated potentiometric endpoint titration with photometric colorimetric confirmation, based on the stoichiometric reaction between Ca²⁺/Mg²⁺ and EDTA under buffered conditions.
Can the instrument operate in outdoor installations?
Yes—the IP65-rated housing and operating temperature range (10–40°C ambient) permit wall-mount or sheltered outdoor deployment, provided sample line insulation and UV shielding are applied where necessary.
Is the system compatible with LIMS integration?
Yes—via RS485 Modbus RTU or optional OPC UA gateway, enabling direct ingestion of hardness values, status flags, and diagnostic codes into laboratory information management systems.
How often does the system require recalibration?
Factory calibration remains stable for ≥6 months under typical operating conditions; field verification using NIST-traceable hardness standards is recommended quarterly or after major maintenance.
Does the analyzer support remote firmware updates?
Yes—secure over-the-air updates are supported via HTTPS with cryptographic signature validation, requiring no physical access to the device.