Dextens 63101 Online Ozone Analyzer

Overview

The Dextens 63101 Online Ozone Analyzer is a precision-engineered, industrial-grade instrument designed for continuous, real-time measurement of ozone (O₃) concentration in both gaseous and aqueous phases. Utilizing electrochemical sensing technology with a proprietary Dextens 51101 ozone-specific sensor, the analyzer delivers high stability and low-drift performance across demanding environmental, municipal water treatment, pharmaceutical cleanroom, and semiconductor process monitoring applications. Its core measurement principle relies on selective amperometric detection—where ozone diffuses through a gas-permeable or liquid-permeable membrane (models 82952 or 82956) and undergoes a controlled redox reaction at a working electrode, generating a current linearly proportional to O₃ partial pressure or dissolved concentration. This architecture ensures trace-level sensitivity without cross-sensitivity to chlorine, hydrogen peroxide, or ambient oxygen—critical for compliance-critical ozone validation workflows.

Key Features

• True dual-phase capability: Simultaneous support for dissolved ozone (aqueous) and gaseous ozone (headspace or process gas) measurements via interchangeable sensor modules and configurable membrane types.
• Ultra-low detection limit: 0.01 ppb (aqueous) and 0.5 ppm (gaseous), with full-scale ranges spanning 0.01 ppb–200 ppm (liquid) and 0.5 ppm–100% v/v (gas).
• IP65/NEMA 4X-rated stainless-steel enclosure (316L grade), engineered for humid, corrosive, or washdown environments typical in water disinfection plants and biopharma facilities.
• Integrated LCD interface with real-time display of ozone concentration, temperature, timestamp, and active membrane model—enabling immediate operational verification without external software.
• User-configurable alarm logic: Dual independent alarm thresholds (high/low or high/high) with relay outputs rated up to 125 VAC / 20 VDC, compliant with IEC 61000-4 immunity standards.
• Auto-ranging calibration sequence with single-point air zero or direct span calibration; factory-set thermal cutoff at +40 °C (adjustable via firmware), preventing sensor overheating during extended operation.

Sample Compatibility & Compliance

The Dextens 63101 accommodates diverse sampling configurations—including inline flow cells for pressurized water lines, diffusion-based gas probes for ambient or duct-mounted ozone monitoring, and immersion housings for tank-level dissolved ozone profiling. It meets key regulatory expectations for ozone quantification in validated processes: compatible with USP , ISO 14644-3 (cleanroom ozone decontamination), and EPA Method O3-01 (for ambient air reference analyzers). While not intrinsically certified for hazardous locations, its robust construction and electrical isolation align with general-purpose Class I, Division 2 requirements when installed per NEC Article 500 guidelines. The device supports GLP/GMP-aligned data integrity practices through time-stamped event logging and password-protected configuration access.

Software & Data Management

Data output is provided via isolated RS-232 (point-to-point) and RS-485 (multi-drop, Modbus RTU protocol) interfaces, enabling seamless integration into SCADA, DCS, or LIMS platforms. All communication adheres to EIA/TIA-232-F and -485-B physical layer specifications. Internal non-volatile memory retains >30 days of 1-minute averaged concentration and temperature records. Firmware supports remote parameter updates and diagnostic query responses (e.g., sensor status, calibration due date, thermal fault history). Audit trail functionality—while not FDA 21 CFR Part 11-compliant out-of-the-box—can be enabled via third-party middleware that captures user login events, configuration changes, and calibration actions with digital signatures.

Applications

• Municipal and industrial drinking water treatment: Continuous monitoring of ozone dose and residual post-contact chamber for CT-value validation.
• Pharmaceutical water-for-injection (WFI) and pure steam systems: Verification of ozone sanitization cycles per EU GMP Annex 1 and PDA TR75.
• Food processing surface disinfection: Real-time ozone concentration control in cold plasma or aqueous ozonation tunnels.
• Electronics manufacturing: Monitoring of ozone-based photoresist stripping and wafer cleaning tool exhaust streams.
• Research laboratories: Kinetic studies of ozone decomposition in aqueous matrices or catalytic reactor effluents.

FAQ

What membrane options are supported, and how do they affect measurement range?
The analyzer accepts two Dextens-certified membranes: model 82952 (optimized for low-concentration aqueous ozone, 0.01 ppb–10 ppm) and 82956 (designed for high-concentration gas-phase applications, 1 ppm–100% v/v). Selection determines diffusion rate, response time, and upper detection limit.
Is field calibration possible without specialized equipment?
Yes—single-point zero calibration using ambient air (for gas mode) or ozone-free deionized water (for liquid mode) is fully supported. Span calibration requires a certified ozone generator or NIST-traceable standard gas source.
Can the unit operate unattended for extended periods?
With its 20 W max power draw, wide operating temperature range (–5 °C to +50 °C), and IP65-rated housing, the 63101 is rated for continuous 24/7 deployment in climate-controlled utility rooms or outdoor kiosks with sunshade protection.
Does it support analog output for PLC interfacing?
Yes—a 4–20 mA isolated analog output is available as an optional module (order code: 63101-AO), configurable for linear scaling across any user-defined concentration range.
How frequently should the sensor be replaced?
Under typical municipal water conditions (25 °C, pH 7, 10 ppm continuous) or elevated temperatures (>40 °C).