GreenPrima Aqualysis 800 High-Precision Water Hardness Analyzer

Overview

The GreenPrima Aqualysis 800 High-Precision Water Hardness Analyzer is an industrial-grade, fully automated online analyzer engineered for continuous or scheduled monitoring of total water hardness—expressed as calcium carbonate (CaCO₃) equivalence—in critical process and environmental water streams. It operates on the principle of endpoint titration coupled with high-stability photometric colorimetry: a precise volume of sample is dosed into a reaction cell, followed by sequential addition of standardized EDTA titrant and a pH-buffered metallochromic indicator (e.g., Eriochrome Black T). The instrument detects the stoichiometric endpoint via optical absorption shift at 525 nm, delivering quantitative hardness values traceable to NIST-traceable reference standards. Designed for unattended operation in demanding environments—including boiler feedwater systems, pharmaceutical purified water loops (PW/WFI), cooling tower circuits, and municipal softening plants—the Aqualysis 800 integrates robust fluidic architecture, low-reagent consumption chemistry, and fail-safe diagnostic routines to ensure long-term metrological integrity.

Key Features

• Automated endpoint titration with dual-wavelength photometric detection for enhanced interference rejection
• Configurable measurement intervals from 1 to 360 minutes, supporting both real-time control and energy-optimized duty cycles
• Compact modular chassis (400 × 300 × 180 mm, 4 kg) rated IP65 for wall- or panel-mount deployment in humid or washdown-prone areas
• Self-diagnostic system with automatic calibration verification using built-in standard solution ports and air-gap bubble detection
• Four programmable relay outputs (250 V AC / 4 A) for direct integration with softener regeneration valves, alarm panels, or PLCs
• Dual digital inputs enabling external trigger control (e.g., flow switch activation or SCADA-initiated analysis)
• Low-power design: 25 VA operational draw, 3.5 VA standby—compliant with IEC 62040-3 for uninterruptible power compatibility
• Color LCD interface with multilingual menu navigation and real-time graphical trend display of hardness profiles

Sample Compatibility & Compliance

The Aqualysis 800 is validated for aqueous samples with turbidity ≤ 5 NTU and suspended solids < 10 mg/L. It accommodates inlet pressures of 0.1–6 bar and sample temperatures from 5–40 °C without external conditioning. Reagent kits are supplied pre-formulated and certified per ISO 8655-6 for volumetric delivery accuracy. The analyzer meets EN 61326-1 (EMC) and EN 61010-1 (safety) requirements. Its data handling architecture supports audit-ready operation under GLP and GMP frameworks: onboard event logs timestamp all calibrations, faults, reagent replacements, and user actions with immutable records. When configured with optional firmware upgrade, it satisfies FDA 21 CFR Part 11 requirements for electronic records and signatures—including role-based access control, biometric or token-authenticated login, and cryptographic hash integrity checks for stored datasets.

Software & Data Management

Data acquisition and remote supervision are facilitated through native Modbus RTU over RS485, enabling seamless integration into existing SCADA, DCS, or MES platforms. The included GreenPrima Analytical Suite (v3.2+) provides secure web-based configuration, historical data export (CSV/Excel), customizable alarm thresholds, and automated report generation compliant with ISO/IEC 17025 documentation templates. All measurements include embedded metadata: sample ID, operator tag, ambient temperature, reagent lot number, and uncertainty budget derived from repeatability and calibration drift history. Optional cloud gateway modules support TLS 1.2-encrypted MQTT transmission to AWS IoT Core or Microsoft Azure IoT Hub for centralized fleet monitoring and predictive maintenance analytics.

Applications

• Real-time hardness monitoring in high-purity water systems for pharmaceutical manufacturing (USP , EP 2.2.42)
• Feedwater quality assurance in high-pressure steam boilers (ASME B31.1, EN 12952-12)
• Performance verification of ion-exchange softeners and reverse osmosis pretreatment stages
• Regulatory compliance reporting for surface water discharge permits (EPA Method 130.1, ISO 6059)
• Optimization of antiscalant dosing in closed-loop cooling systems
• Validation of deionized water distribution networks in semiconductor fabs

FAQ

What hardness units does the Aqualysis 800 support?
It natively reports in °dH (German degrees), °f (French degrees), ppm CaCO₃, and mmol/L—user-selectable per installation profile with automatic unit conversion during data export.

Can the analyzer operate without a continuous sample flow?
Yes. It supports batch-mode analysis using external peristaltic pumping or gravity-fed static sampling, with programmable fill-and-measure cycles to minimize reagent use.

Is third-party reagent compatibility supported?
No. Only GreenPrima-certified reagent kits (Cat. No. AQ-EDTA-KIT-01 through -04) are validated for metrological performance and warranty coverage.

How often is calibration required under routine operation?
Factory calibration remains stable for ≥6 months; however, daily verification using a mid-range check standard (supplied with each reagent kit) is recommended per ISO/IEC 17025 Clause 7.7.

Does the device support multi-channel expansion?
Yes. When paired with the GreenPrima MCS-4 or MCS-8 Multi-Channel Selector, a single Aqualysis 800 controller can sequentially analyze up to eight independent sample points with full channel-specific parameter logging.