GreenPrima Aqualysis 800A Online Total Alkalinity Analyzer for Boiler Feedwater
| Brand | GreenPrima |
|---|---|
| Origin | United Kingdom |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Origin Category | Imported Instrument |
| Model | Aqualysis 800A |
| Pricing | Available upon Request |
Overview
The GreenPrima Aqualysis 800A is a dedicated online total alkalinity analyzer engineered for continuous, reliable monitoring of carbonate, bicarbonate, and hydroxide alkalinity in high-purity and industrial water systems—particularly boiler feedwater, softened effluent, and closed-loop cooling water. It operates on the principle of potentiometric titration coupled with colorimetric endpoint detection, delivering trace-level accuracy without requiring operator intervention. Unlike laboratory-based titration methods subject to human error and sampling delay, the Aqualysis 800A integrates automated reagent dosing, precise pH-controlled titration kinetics, and optical endpoint recognition to ensure reproducible results across varying ionic strength and temperature conditions (10–40 °C). Its design prioritizes long-term stability in harsh utility environments, with corrosion-resistant fluidic pathways and sealed optical cells resistant to scaling and organic fouling—critical for uninterrupted operation in steam generation plants where alkalinity control directly impacts scale formation, corrosion risk, and boiler tube integrity.
Key Features
- Automated titration platform with dual-mode endpoint detection: pH-slope monitoring and spectrophotometric color transition verification for enhanced reliability
- Self-calibrating system with built-in standard solution reservoirs and scheduled calibration routines compliant with ISO 9001 maintenance protocols
- Compact footprint (400 × 300 × 180 mm; 4 kg) suitable for panel mounting or standalone cabinet integration in utility rooms and water treatment skids
- Flexible measurement scheduling: configurable interval mode (1–360 minutes) or true continuous analysis with real-time response time < 90 seconds per cycle
- Two programmable digital inputs for external trigger signals (e.g., pump status, flow switch activation) enabling demand-driven analysis
- Four user-assignable relay outputs supporting alarm staging, dosing pump control, or SCADA interlock logic
- Low reagent consumption (< 1.2 mL per analysis) and extended cartridge life (≥ 6 months at 15-min intervals), reducing consumables logistics and waste disposal burden
- Integrated data logging (≥ 30 days of 1-min resolution) with timestamped fault records, reagent depletion alerts, and sensor diagnostic history
Sample Compatibility & Compliance
The Aqualysis 800A is validated for use with low-TDS, low-turbidity aqueous matrices typical of steam-cycle water treatment: boiler feedwater (TDS < 10 ppm), ion-exchange softener effluent, reverse osmosis permeate, and pharmaceutical-grade purified water (PW/WFI per USP ). It meets material compatibility requirements per ASTM D4192 for water analysis instrumentation and supports GLP/GMP-aligned operational documentation through audit-trail-enabled firmware. While not intrinsically rated for hazardous areas, its enclosure conforms to IP65 for protection against dust and low-pressure water jets, enabling deployment in mechanical rooms adjacent to boiler houses. All wetted parts—including sample lines, titration cell, and optical cuvette—are constructed from PFA, borosilicate glass, and 316L stainless steel to prevent leaching or catalytic interference.
Software & Data Management
The embedded firmware supports Modbus RTU over RS-485 for seamless integration into DCS/PLC networks and provides isolated 4–20 mA analog output with HART 7.0 capability for legacy system compatibility. Local configuration is performed via a backlit LCD interface with intuitive menu navigation; remote access is available through optional Ethernet gateway modules supporting OPC UA and MQTT protocols. Data export adheres to ASTM D5117-22 guidelines for water quality instrument data formatting, including metadata fields for analyst ID, calibration certificate number, and environmental ambient conditions. Firmware updates are delivered via signed binary packages with SHA-256 verification, satisfying FDA 21 CFR Part 11 requirements for electronic records when deployed with appropriate system validation documentation.
Applications
- Real-time alkalinity control in drum-type and once-through boilers to maintain optimal pH (9.0–10.5) and minimize caustic embrittlement risk
- Monitoring softener breakthrough during sodium cycle regeneration to optimize salt usage and reduce wastewater volume
- Early detection of CO₂ ingress or amine degradation in condensate return systems
- Verification of dealkalizer performance in pharmaceutical water-for-injection (WFI) production loops
- Compliance reporting for EN 12952-12 (water-tube boilers) and ASME B31.1 power piping code requirements
FAQ
What alkalinity species does the Aqualysis 800A quantify?
It measures total alkalinity expressed as mg/L CaCO₃ equivalent, covering contributions from OH⁻, CO₃²⁻, and HCO₃⁻ ions in accordance with ISO 9963-1 and APHA Standard Method 2320 B.
Can it operate without manual reagent refills for extended periods?
Yes—standard reagent cartridges support ≥ 6 months of operation at 15-minute intervals; optional high-capacity kits extend this to 12 months under typical utility plant duty cycles.
Is the analyzer compatible with third-party channel multiplexers?
It natively interfaces with GreenPrima MCS-2 through MCS-8 multi-channel selector modules using dry-contact synchronization signals and shared reagent manifolds.
Does it meet regulatory requirements for pharmaceutical water systems?
When installed with IQ/OQ documentation and operated within validated parameters, it satisfies Annex 15 and EU GMP Chapter 7 expectations for continuous water quality monitoring instrumentation.
