WTW 9220 Online TOC-Analyzer
The WTW 9220 Online TOC Analyzer is designed for monitoring organic total carbon (TOC) in water quality, water treatment, and process water applications. More information on application possibilities and areas of use is available on the WTW website.
Product Views and Dimensions
Front view showing the analyzer's front panel, featuring a 7-inch WSVGA display with a capacitive touchscreen. The width is 55.9 cm.
Side view illustrating the analyzer's profile, revealing internal components and connections. The depth is 25.4 cm.
Rack installation view, depicting the analyzer mounted in a rack with a reagent tray. This view shows both side and front aspects. The height for this configuration is 113.7 cm.
Bottom view of the analyzer. The depth is 28 cm.
Overall dimensions for the analyzer are approximately 55.9 cm (width) x 25.4 cm (depth) x 113.7 cm (height) when configured for rack installation.
A visual representation shows the internal setup including reagent bottles, tubing, and electronic components within the analyzer.
Technical Specifications
| Category | Specification | Value |
|---|---|---|
| Model | 9220 Online TOC | |
| Performance | Measurement Principle | Heated Sodium Persulfate Oxidation |
| Measurement Technology | Non-dispersive Infrared Detection (NDIR) | |
| Compliance with Regulations | USEPA 415.3 (Source and Drinking Water); SM 5310C (Water and Wastewater) | |
| Measurement Range | 0 to 25 ppm (Standard); adjustable up to 100 ppm | |
| Accuracy | ±5%; Precision: 2% RSD | |
| Detection Limit | 0.015 ppm | |
| Sample Preparation / Analysis Time | 5 to 9 minute intervals | |
| Sample Preparation Connections | Sample Preparation Connections | 6 (included) |
| Sample Preparation Valve Controls | 4 (included) | |
| Sample Preparation Valves | Up to 4 (optional) | |
| User Interface | 7" WSVGA display with capacitive touchscreen (Windows® CE-based) | |
| General | Device Housing Certifications | IEC 61326-1, IEC 61010-1, cETLus (ETL and CSA standards) |
| Protection Rating | IP66; NEMA 4 | |
| Weight | Analyzer: 16.6 kg; Analyzer with reagent tray, PGM, and full reagent containers: 44.4 kg | |
| Device Warranty | 2 Years | |
| Reagents and Required Reagents | Reagent Container | 10% Sodium Persulfate, 5% Phosphoric Acid, DI Water |
| Reagent Container Type | 5 L Polyurethane, high density | |
| Reagent Lifespan (liquid) | Nominal 30 days at 25 °C; 90 days at temperatures below 4 °C | |
| Sample and Gas Requirements | Flow Rate to Sample Inlet | 50 to 1,000 ml/min using the sample inlet device |
| Inlet Pressure | 1 to 20 psig with the sample inlet device | |
| Sample Temperature Range | 5 to 45 °C | |
| Gas Requirement (internally generated) | Process gas module (included); consumption ≤ 100 ml/min. CO2-free air | |
| Power and Communication | Power Supply | 100 to 240 VAC, 70VA, 50/60 Hz |
| Input Relays | 2 (Remote Start, Remote Stop); 5A/30 VDC Max - potential-free contact | |
| Output Relays | 2 (System Alarm, Sample Alarm); 5A/30 VDC Max - potential-free contact | |
| Analog Outputs | 4 (4 to 20 mA; user-configurable concentrations) | |
| Digital Outputs | RS-485/422 Modbus RTU protocol or ASCII standard | |
| Data Export | To PC via USB flash drive (Microsoft® Excel®-compatible .csv file format) | |
| Environment | Operating Temperature Range | 5 to 45 °C |
| Humidity | Up to 90% relative humidity (non-condensing) | |
| Storage Temperature Range | 5 to 45 °C |
Product Summary
Model: TOC 9220
Description: Online analyzer for determining total organic carbon (TOC) using sodium persulfate oxidation. Features 4 x 4-20 mA outputs, 2 x relays, and RS 485 Modbus protocol. Measurement range: 0 to 25 mg/L.
