GreenPrima PROSAN8200 Online Turbidimeter

Overview

The GreenPrima PROSAN8200 Online Turbidimeter is an industrial-grade, in-line turbidity measurement system engineered for continuous, real-time monitoring of water clarity in municipal drinking water treatment, wastewater effluent streams, process water loops, and environmental discharge applications. It operates on the principle of nephelometric turbidity measurement per US EPA Method 180.1 and ISO 7027, utilizing dual-wavelength optical detection—white light (for broad-spectrum particle response) and infrared light (to minimize color interference)—to deliver stable, interference-resistant readings across a wide dynamic range (0.0001–1000.0 NTU). Its flow-through design integrates seamlessly into pressurized piping systems with built-in pressure regulation (up to 1380 kPa), eliminating the need for external bypass manifolds or sample conditioning units. The instrument’s compact, one-piece probe-and-electronics architecture reduces installation complexity and long-term calibration drift, while its robust construction ensures operational integrity under demanding plant conditions.

Key Features

• Integrated bubble suppression system minimizes measurement artifacts caused by entrained air in flowing samples
• On-line calibration capability enables zero/span verification without process interruption—reducing downtime and improving data continuity
• Small-volume optical chamber (<5 mL) delivers rapid response times (5–20 s, user-adjustable), critical for detecting transient turbidity spikes during coagulation or filter breakthrough events
• Ultrasonic auto-cleaning option (field-installable) maintains optical window integrity in high-fouling environments such as raw surface water intakes or tertiary filtration returns
• Dual-light-source architecture (white + IR LEDs) provides cross-validated measurements and compensates for chromatic interference from dissolved organic matter or iron/manganese staining
• IP66/NEMA 4X-rated enclosure ensures reliable operation in humid, washdown-prone indoor utility rooms and control shelters
• Compliance-ready analog output (4–20 mA, powered) and Modbus RTU over RS-485 support integration into SCADA, DCS, and PLC-based supervisory systems with full engineering-unit scaling and fault diagnostics

Sample Compatibility & Compliance

The PROSAN8200 is validated for use with potable water, filtered surface water, secondary/tertiary wastewater effluents, and low-turbidity industrial process streams. Its wetted path employs chemically resistant materials—including borosilicate glass optical windows, food-grade silicone seals, polypropylene housing, and 316 stainless steel fittings—ensuring compatibility with chlorine, ozone, and low-concentration sodium hypochlorite solutions typical in disinfection stages. The instrument meets regulatory requirements for compliance reporting under US EPA Clean Water Act (CWA) Section 402 permit monitoring and Safe Drinking Water Act (SDWA) turbidity benchmarks. It is certified to ISO 7027 for method equivalence, carries CE marking for EMC and LVD compliance, and is ETL-listed to UL 61010-1 and CSA C22.2 No. 1010.1, confirming conformance with international safety standards for laboratory and industrial electrical equipment.

Software & Data Management

While the PROSAN8200 operates autonomously as a hardwired field instrument, its Modbus RTU interface supports bidirectional communication with third-party historian platforms (e.g., Ignition, Siemens Desigo CC, Honeywell Experion) for time-stamped data logging, alarm event capture, and audit-trail generation. All configuration parameters—including range selection, damping factor, relay setpoints, and cleaning cycle intervals—are programmable via local keypad or remote Modbus register writes. The device stores no internal data logs but transmits live process values with timestamped status flags (e.g., “cleaning active”, “low signal”, “out-of-range”)—enabling traceability required under GLP and GMP-aligned water quality management systems. For facilities subject to FDA 21 CFR Part 11, the instrument may be deployed within a validated data acquisition ecosystem where electronic signatures, change control, and audit trail functionality are implemented at the supervisory software layer.

Applications

• Real-time turbidity monitoring at sedimentation basin effluent points to optimize coagulant dosing
• Continuous verification of granular media filter performance and early detection of filter ripening or breakthrough
• Discharge compliance monitoring for NPDES permits in wastewater treatment plants
• Influent screening at water reclamation facilities to trigger pretreatment alarms
• Process water clarity assurance in pharmaceutical manufacturing utilities (PW, WFI pre-check)
• Environmental monitoring of stormwater outfalls and receiving stream interfaces

FAQ

Is the PROSAN8200 suitable for outdoor installation?
No. It is rated for indoor use only, with an operating altitude limit of 2000 m and maximum ambient humidity of 95% RH (non-condensing). Outdoor deployment requires climate-controlled enclosures meeting IP66 environmental sealing.
Can the instrument measure below 0.0001 NTU?
No. Its specified resolution is 0.0001 NTU in the low range (0.0001–10 NTU); it is not designed for ultra-low turbidity applications such as ultrapure water (UPW) monitoring, which typically require sub-0.0001 NTU sensitivity and laser-based detection.
Does the PROSAN8200 support automatic temperature compensation?
Yes. Internal PT1000 sensor provides real-time sample temperature input, and firmware applies ISO 7027-compliant temperature correction to turbidity values between +1 °C and +50 °C.
What maintenance intervals are recommended?
With ultrasonic cleaning enabled, optical window inspection and manual wipe are recommended every 6 months; without ultrasonic cleaning, quarterly inspection is advised. LED source lifetime exceeds 7 years (white) and 10 years (IR), with no user-serviceable replacement required during normal operation.
Is factory calibration traceable to NIST standards?
Yes. Each unit ships with a calibration certificate traceable to NIST-traceable formazin and AMCO AEPA standards, including as-found/as-left data for initial commissioning verification.