Ruixin SZ-CY2 Ozone Analyzer

Overview

The Ruixin SZ-CY2 Ozone Analyzer is a portable, single-channel photometric analyzer engineered for rapid, field-deployable quantification of dissolved ozone (O₃) in aqueous matrices. It operates on the principle of visible-spectrum absorbance spectroscopy, leveraging the characteristic absorption peak of ozone near 258 nm — with optical compensation and calibration optimized across a broad 380–630 nm spectral window to ensure robustness against matrix interferences (e.g., turbidity, residual chlorine, or organic chromophores). Designed for compliance with standard methods including APHA 4500-O₃ B (colorimetric indigo method) and ISO 13795:2002 (water quality — determination of ozone), the instrument delivers trace-level ozone measurements in drinking water, treated wastewater, seawater, surface water, and process water used in food-grade disinfection systems. Its compact aluminum chassis, integrated rechargeable lithium battery, and dual-power capability (AC 220 V / DC 5 V) enable seamless transition between laboratory benchtop use and on-site monitoring without recalibration.

Key Features

• 4.5-inch high-resolution color TFT touchscreen with full Chinese UI — supports intuitive navigation, real-time graphing, and on-device data annotation
• Integrated thermal printer for immediate hardcopy reporting — includes sample ID, timestamp, concentration result (mg/L), and operator signature field
• Pre-loaded multi-point calibration curves for ozone quantification across three dynamic ranges: low (0.05–0.50 mg/L), medium (0.25–2.50 mg/L), and high (1.00–5.00 mg/L)
• Photometric performance: absorbance range 0.000–4.000 AU (resolution 0.001 AU); transmittance range 0.00–100.00% (resolution 0.01%)
• Optical accuracy: ±2.0% transmittance error; baseline stability ≤0.3% over 3 minutes (critical for low-concentration ozone assays)
• Dual communication interfaces — RS232 and USB — enabling bidirectional data exchange with LIMS, SCADA systems, or regulatory audit platforms
• Internal non-volatile memory stores ≥500 test records with full metadata (date/time, calibration ID, operator input, raw absorbance values)

Sample Compatibility & Compliance

The SZ-CY2 is validated for direct analysis of clarified aqueous samples without filtration or pretreatment, provided turbidity remains below 5 NTU. It meets functional equivalence to EPA Method 334.0 and ISO/IEC 17025:2017 requirements for measurement uncertainty estimation in routine environmental testing. While not certified under FDA 21 CFR Part 11, its audit trail functionality — including time-stamped result logs, user-defined ID entry, and immutable record storage — supports GLP-aligned documentation practices in food processing QA/QC labs. The instrument complies with CE electromagnetic compatibility (EMC) directives and RoHS material restrictions. All calibration curves are traceable to NIST-traceable ozone reference standards (certified gas-phase or iodometric titration equivalents).

Software & Data Management

Data export is supported via USB mass storage mode (CSV format) or RS232 serial transmission using ASCII protocol. No proprietary software installation is required — exported files are compatible with Excel, LabArchives, and industry-standard statistical process control (SPC) tools. Each stored record contains: sample identifier (user-input Chinese/English text), measurement date/time (RTC synchronized), measured absorbance value, selected calibration curve ID, calculated ozone concentration (mg/L), and operator ID. Firmware version 2.3+ enables optional password-protected user roles (Operator, Supervisor, Administrator) to enforce procedural controls during calibration and report generation.

Applications

• Verification of ozone dosing efficacy in bottled water and beverage production lines
• Monitoring residual ozone in post-disinfection stages of municipal drinking water treatment plants
• Validation of ozone contact tank performance in seafood processing facility effluent streams
• Routine QC checks for ozone-based CIP (clean-in-place) systems in dairy and ready-to-eat food manufacturing
• Field verification of ozone generator output stability during commissioning and preventive maintenance
• Educational use in food science and environmental engineering laboratories for method validation exercises

FAQ

What is the lower detection limit for ozone using the SZ-CY2?
The instrument achieves a practical quantitation limit of 0.05 mg/L based on signal-to-noise ratio (S/N ≥ 10) under standard conditions (25 °C, pH 6–8, no interfering oxidants).
Can the device be calibrated using standard solutions prepared in-house?
Yes — users may perform manual two-point calibration using certified ozone standard solutions (e.g., potassium iodide titration-derived standards) or NIST-traceable reference materials; calibration coefficients are stored per curve ID.
Is the thermal printer replaceable or serviceable in the field?
The embedded thermal print head is rated for ≥50 km of ribbon life and can be replaced using standard MTP-210-compatible modules without firmware reflash.
Does the instrument support external probe integration (e.g., temperature or pH compensation)?
No — the SZ-CY2 is a dedicated ozone photometer; temperature and pH effects are mitigated via pre-characterized curve algorithms rather than real-time sensor fusion.
How frequently must the optical path be cleaned or verified?
We recommend visual inspection of the cuvette holder and light path every 50 measurements; cleaning with lint-free lens tissue and isopropanol is sufficient — no alignment tools or factory recalibration required under normal use.