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° side-scatter detection principle using a stable 850 nm near-infrared LED light source—minimizing interference from color, particle absorption, or ambient light. Unlike benchtop or immersion-style sensors, the Prosan8200 is designed as a true in-line analyzer: process water flows directly through its calibrated quartz flow cell under controlled pressure (1–200 psi), ensuring representative sampling without bypass loops or flow diverters. Its robust architecture supports uninterrupted operation in municipal drinking water treatment plants, pharmaceutical purified water systems, food & beverage production lines, and industrial cooling circuits—where regulatory compliance, measurement traceability, and long-term stability are non-negotiable.

Key Features

• True in-line design with integrated pressure regulation (factory-set to 15 psi), eliminating need for external flow controllers or sample conditioning hardware
• High-resolution detection capability down to 0.0001 NTU, with automatic range switching across 0–1000 NTU to maintain optimal signal-to-noise ratio at all concentrations
• Dual-stage environmental protection: desiccant cartridge + internal fan system actively suppresses condensation and moisture ingress inside optical chamber
• Self-diagnostic desiccant status monitoring—automated visual and relay-based alert when desiccant saturation threshold is reached
• Modular optical head and electronics assembly enable field-replaceable components without full unit removal or system shutdown
• Backlit multi-line LCD provides simultaneous display of real-time NTU value, temperature, pressure status, calibration timestamp, and diagnostic flags
• Configurable response time (5–500 seconds) allows optimization for fast transient detection (e.g., filter breakthrough) or noise-reduced averaging in stable basins

Sample Compatibility & Compliance

The Prosan8200 is validated for use with potable water, filtered surface water, reverse osmosis permeate, ultrapure water (UPW), and low-viscosity process coolants. Its quartz flow cell resists fouling from silica, iron hydroxide, and organic colloids common in municipal and industrial applications. The instrument meets the photometric performance criteria defined in ISO 7027:2016 (nephelometric turbidity) and U.S. EPA Method 180.1 (for drinking water compliance reporting). All firmware and calibration routines support audit-ready data integrity per FDA 21 CFR Part 11 requirements—including electronic signature capability, user-access levels, and immutable calibration logs with operator ID and timestamp. Optional GLP/GMP configuration packages include IQ/OQ documentation templates and calibration certificate traceability to NIST-traceable standards.

Software & Data Management

Local configuration and diagnostics are performed via intuitive menu navigation on the built-in LCD interface. For centralized integration, the RS-485 port supports MODBUS RTU protocol (addressable up to 247 devices on single bus), enabling seamless connectivity to SCADA, DCS, or LIMS platforms. The isolated 4–20 mA output is fully scalable and linearized across user-defined sub-ranges (e.g., 0–5 NTU for finished water; 0–100 NTU for sedimentation effluent). Calibration history—including date, standard used (Formazin or AMCO AEPA-1), operator ID, and deviation metrics—is stored internally for ≥12 months and exportable via MODBUS register polling. No proprietary software or cloud dependency is required for routine operation or regulatory recordkeeping.

Applications

• Drinking water treatment: raw intake, coagulation/flocculation effluent, sedimentation basin outflow, rapid sand filter influent/effluent, final disinfection contact tank, and distribution system entry points
• Pharmaceutical water systems: PW (Purified Water), WFI (Water for Injection), and clean steam condensate monitoring per USP and EU Annex 1 requirements
• F&B production: CIP rinse water verification, syrup dilution control, bottle rinsing loop surveillance, and pasteurizer cooling water quality assurance
• Power generation: condenser circulating water, boiler feedwater pre-treatment, and demineralizer effluent validation
• Municipal infrastructure: pressure-regulated distribution network nodes, reservoir draw-off points, and booster station feedback control

FAQ

Does the Prosan8200 require periodic lamp replacement?
No—the 850 nm LED light source has a rated operational lifetime exceeding 7 years under continuous duty, with no scheduled maintenance or recalibration needed solely due to source aging.

Can it be installed vertically or only horizontally?
The unit is orientation-insensitive; mounting orientation (wall-mounted vertical or horizontal) does not affect optical path alignment or measurement accuracy due to symmetrical flow cell geometry and gravity-independent detection optics.

Is third-party calibration certification available?
Yes—GreenPrima offers UKAS-accredited calibration services (ISO/IEC 17025) with full uncertainty budgets, traceable to NPL primary standards, including on-site verification at customer facilities.

How is zero calibration performed in-situ?
Zero calibration uses certified Formazin-free zero standard (deionized water with <0.005 NTU certified traceability) introduced via dedicated calibration port; no disassembly or flow interruption is required.

What happens if process pressure exceeds 200 psi?
The integrated pressure regulator maintains constant 15 psi across the optical cell regardless of upstream fluctuations; sustained input pressure >200 psi will trigger mechanical overpressure relief and disable measurement until reset by service personnel.