WTW Turb 2000 Series Online Turbidimeter

Overview

The WTW Turb 2000 Series Online Turbidimeter is an industrial-grade, continuously operating turbidity analyzer engineered for high-reliability monitoring in municipal drinking water treatment, distribution networks, and process-critical water applications. It employs the 90° side-scatter detection principle—standardized under DIN 7027 for infrared light measurement and USEPA Method 180.1 for white-light (tungsten halogen) measurement—to deliver traceable, metrologically robust turbidity quantification in nephelometric turbidity units (NTU). Unlike benchtop or portable units, the Turb 2000 integrates directly into pressurized water lines via flow-through cells or submersible probe configurations, enabling real-time, unattended operation with minimal maintenance intervals. Its dual-light-source architecture ensures compliance across regulatory frameworks requiring both infrared (to minimize color interference) and visible-spectrum (for EPA-aligned validation) measurement modes—critical for facilities subject to ISO/IEC 17025 accreditation or undergoing GLP/GMP audits.

Key Features

• Dual optical path design: Independent infrared LED (850 nm) and tungsten halogen lamp (2850 K CCT) sources, each optimized per international standards—DIN 7027 for IR and USEPA 180.1 for white light.
• High-resolution digital detection: 0.0001 NTU resolution across full dynamic range, supported by temperature-compensated photodiode array and low-noise analog front-end electronics.
• Ruggedized IP66-rated housing: Cast aluminum enclosure with stainless-steel wetted parts; certified for outdoor installation, vibration resistance, and continuous exposure to humid or washdown environments.
• Optional ultrasonic cleaning module: Integrated transducer system automatically decontaminates optical windows at user-defined intervals, reducing manual intervention and drift caused by biofilm or particulate fouling.
• Auto-ranging sensor architecture: Seamless transition between low-range (0–10 NTU, Turb 2110 variant) and standard-range (0–1000 NTU) measurement modes without hardware reconfiguration.
• Wide operational envelope: Stable performance from 1 °C to 50 °C ambient, with internal thermal stabilization ensuring signal integrity during diurnal or seasonal temperature fluctuations.

Sample Compatibility & Compliance

The Turb 2000 series is validated for use with potable water, filtered surface water, groundwater, and low-turbidity process streams typical of final disinfection stages and distribution network monitoring points. It meets the optical geometry, detector linearity, and calibration traceability requirements of ISO 7027-1:2016, DIN EN ISO 7027, and US EPA Method 180.1. All factory calibrations are NIST-traceable using formazin and AMCO-AE standards. The instrument supports audit-ready data logging with timestamped events (e.g., cleaning cycles, calibration actions, alarm triggers), fulfilling documentation expectations under FDA 21 CFR Part 11 when paired with WTW’s optional secure software suite. Its electrical safety conforms to IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions), and it carries CE marking for EMC and LVD directives.

Software & Data Management

The Turb 2000 interfaces via 4–20 mA analog output, Modbus RTU (RS-485), or optional Ethernet/IP for integration into SCADA, DCS, or cloud-based water management platforms. WTW’s proprietary *TurbControl* software provides configuration, diagnostics, trend analysis, and automated report generation (PDF/CSV). Raw measurement data—including raw scatter voltage, temperature compensation factors, and cleaning status—is stored onboard with 32 MB non-volatile memory (≥12 months at 1-min logging interval). All data modifications, parameter changes, and firmware updates are logged with operator ID, timestamp, and reason code—enabling full electronic audit trail capability required under GLP and GMP environments.

Applications

• Real-time monitoring of finished water quality at drinking water treatment plant effluent points.
• Early-warning detection of filter breakthrough or coagulation inefficiency in rapid sand or membrane filtration systems.
• Continuous surveillance of distribution network nodes to identify main breaks, cross-connections, or sediment resuspension events.
• Compliance reporting for regulatory agencies including state primacy programs, EU Drinking Water Directive (2020/2184), and WHO Guidelines for Drinking-water Quality.
• Supporting ISO 22000 and HACCP plans in food & beverage production where process water turbidity is a critical control point.
• Research and validation studies requiring long-term, stable turbidity baselines in pilot-scale treatment systems.

FAQ

What standards does the Turb 2000 comply with for regulatory reporting?

It complies with ISO 7027-1:2016, DIN EN ISO 7027, and USEPA Method 180.1—enabling direct comparability with laboratory reference methods.
Can the Turb 2000 operate reliably in cold-climate installations?

Yes—the instrument maintains specified accuracy from 1 °C to 50 °C ambient, and optional heated flow cells are available for sub-zero pipeline applications.
How often does the ultrasonic cleaning system activate?

Cleaning frequency is fully programmable (e.g., every 15 min to 24 h) and can be triggered manually or conditionally based on signal drift thresholds.
Is calibration traceable to national metrology institutes?

All factory calibrations are NIST-traceable using certified formazin and AMCO-AE standards, with full calibration certificates provided upon request.
Does the Turb 2000 support remote diagnostics and firmware updates?

Yes—via Ethernet/IP or Modbus, with secure authenticated access and version-controlled update logs meeting 21 CFR Part 11 requirements.