GreenPrima Prosan8200 Inline Turbidimeter

Overview

The GreenPrima Prosan8200 Inline Turbidimeter is an ISO 7027- and U.S. EPA Method 180.1-compliant optical instrument engineered for continuous, real-time turbidity monitoring in pressurized water streams. It operates on the 90° light scattering principle—where incident near-infrared radiation (850 nm) interacts with suspended particles, and the intensity of scattered light measured at a right angle to the beam is directly proportional to particle concentration. This geometry minimizes interference from color absorption and large-particle settling effects, ensuring high reproducibility across diverse sample matrices. Designed specifically for unattended operation in municipal drinking water treatment plants, pharmaceutical clean utilities, food & beverage process lines, and power plant cooling circuits, the Prosan8200 delivers trace-level resolution (0.0001 NTU) and auto-ranging capability across its full 0–1000 NTU span—enabling detection of subtle coagulation shifts, filter breakthrough events, or membrane integrity loss without manual range switching.

Key Features

• Integrated pressure-regulated flow cell with factory-set 15 psi operating pressure (adjustable 1–200 psi), eliminating external pressure control hardware
• Dual environmental protection system: desiccant cartridge + internal fan to prevent condensation and optical window fogging in high-humidity enclosures
• Self-diagnostic desiccant life monitoring with visual and relay-based alert when moisture-absorption capacity is exhausted
• Modular optical head and electronics architecture—field-replaceable sensor modules reduce downtime during maintenance
• Configurable response time (5–500 s) to balance measurement stability against dynamic process responsiveness
• Backlit multi-line LCD with intuitive menu navigation; supports local parameter configuration without PC connection
• Isolated 4–20 mA analog output with HART-compatible signal conditioning and optional MODBUS RTU over RS-485 for SCADA integration

Sample Compatibility & Compliance

The Prosan8200 is validated for use with potable water, filtered surface water, reverse osmosis permeate, ultrapure water (UPW), and low-viscosity industrial process streams (e.g., sugar syrups, sterile buffer solutions). Its 850 nm LED source complies with ISO 7027’s spectral requirements for formazin-equivalent calibration traceability, while its 90° scatter geometry satisfies U.S. EPA Method 180.1 performance criteria for regulatory reporting. The instrument meets IEC 61326-1 (EMC) and IEC 61000-6-2/6-4 standards for industrial environments. Its IP66-rated enclosure ensures operational integrity in outdoor meter pits, pump stations, and wet utility corridors. For GMP-regulated applications, audit-trail-capable firmware versions support 21 CFR Part 11-compliant data logging when paired with compliant SCADA or LIMS platforms.

Software & Data Management

Configuration and diagnostics are managed via embedded web interface (HTTP/HTTPS) or local LCD menu. Firmware supports timestamped event logging—including calibration history, desiccant status changes, alarm triggers, and sensor diagnostics—with up to 32,000 records stored onboard. When integrated into MODBUS networks, raw NTU values, temperature, pressure, and diagnostic flags are accessible as discrete registers. Optional cloud-ready gateways enable secure TLS-encrypted transmission to centralized dashboards (e.g., Grafana, Ignition, or custom MES). Calibration data adheres to ASTM D6695 guidelines for turbidimeter verification, and all calibrations may be performed using NIST-traceable formazin or polymer standards—reusable calibration kits minimize consumable costs over instrument lifetime.

Applications

• Municipal water treatment: Real-time monitoring of raw intake, flocculation effluent, sedimentation basin outflow, rapid sand filter effluent, and finished water distribution points
• Pharmaceutical water systems: Continuous surveillance of purified water (PW) and water for injection (WFI) loops per USP and EU Annex 1 requirements
• F&B production: In-line verification of final rinse water clarity, CIP return stream cleanliness, and carbonated beverage fill-line integrity
• Power generation: Detection of condenser tube leakage or resin bed exhaustion in closed-loop cooling water systems
• Electronics manufacturing: Monitoring of deionized water polishing stages prior to photolithography tool supply

FAQ

Does the Prosan8200 require periodic lamp replacement?
No—the 850 nm LED has a rated lifetime of ≥50,000 hours (≈7 years at continuous operation) and maintains stable output intensity throughout its service life; no recalibration is required due to source aging.
Can it measure samples with high dissolved color or air bubbles?
Yes—its 90° scattering geometry and 850 nm wavelength significantly reduce interference from chromophores and microbubbles compared to white-light or forward-scatter instruments; however, excessive entrained air should be removed upstream via degassing or pressure stabilization.
Is field calibration possible without external equipment?
Yes—using the included reusable calibration kit (formazin or AMCO-AE standards), users can perform two-point calibration directly via the front-panel interface; slope and offset values are stored non-volatilely.
What cybersecurity protocols does the Ethernet interface support?
Firmware v3.2+ includes TLS 1.2 encryption, configurable user roles (admin/operator/viewer), and disabled default credentials; SSH access is disabled by default and requires explicit enablement via secure console.
How is compliance with drinking water regulations documented?
Each unit ships with a Certificate of Conformance referencing ISO 7027:2016 and EPA 180.1, plus factory calibration report traceable to NPL (UK) reference standards; optional IQ/OQ documentation packages available for regulated facilities.