Orion Star A Portable High-End Dissolved Oxygen Meter
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Orion Star A |
| Pricing | Available Upon Request |
Overview
The Orion Star A Portable High-End Dissolved Oxygen Meter is a field-deployable, laboratory-grade analytical instrument engineered for precise, traceable, and compliant dissolved oxygen (DO) measurement in environmental monitoring, wastewater treatment, aquaculture, and limnological research. It operates on dual electrochemical principles—polarographic (Clark-type) and luminescent (RDO, Ruthenium-based optical) detection—enabling method flexibility and cross-validation capability. The instrument integrates real-time atmospheric pressure compensation (450.0–850.0 mmHg), automatic or manual salinity correction (0–45 ppt), and temperature-controlled sensor response normalization (0–50 °C, ±0.1 °C accuracy). Its rugged IP67-rated enclosure ensures operational integrity under rain, dust, submersion (up to 1 m for 30 min), and variable thermal gradients typical of outdoor sampling campaigns.
Key Features
- Auto-Recognition Technology: Automatically detects and configures connected polarographic or RDO optical DO probes via 9-pin mini-DIN interface—no manual probe type selection required.
- Intelligent Measurement Modes: AUTO-READ™ locks stable readings with visual stabilization indicator; programmable timed data logging supports interval-based acquisition (e.g., every 15 sec to 24 hr).
- Multi-Language Interface: Supports six languages—including English, Chinese, Spanish, French, German, and Portuguese—facilitating international deployment and multi-user lab environments.
- Dual-Mode DO Quantification: Simultaneous display of DO concentration (mg/L or ppm) and saturation (% air saturation), both with user-selectable resolution (0.01 or 0.1 units).
- Power Flexibility: Operates on four standard AA alkaline batteries (typical life: >1,000 hours) or optional universal AC adapter (100–240 V AC, 50/60 Hz).
- GLP-Compliant Data Integrity: Stores up to 5,000 timestamped measurements with metadata—including sample ID, operator ID, calibration history, electrode status, ambient pressure, and temperature—fully traceable per ISO/IEC 17025 and EPA Method 360.1 requirements.
Sample Compatibility & Compliance
The Orion Star A accommodates standardized polarographic sensors (e.g., Orion 083010MD) and RDO optical probes (e.g., Orion 087010MD), compatible with freshwater, seawater, brackish effluents, and aerated bioreactor samples. Calibration options include saturated air/water, zero-oxygen (sodium sulfite) solution, Winkler titration reference, and factory-calibrated RDO standards. All measurements adhere to ASTM D888 (Standard Test Methods for Dissolved Oxygen in Water), ISO 5814 (Electrochemical determination of dissolved oxygen), and US EPA Region 10 Field Manual protocols. Full audit trail functionality—including user login, calibration event logging, and data modification timestamps—supports 21 CFR Part 11 readiness when paired with Thermo Fisher’s Traceable™ software suite.
Software & Data Management
Data export is supported via USB 2.0 (mass storage mode) or RS232 serial connection to PCs running Thermo Fisher’s free Orion CombiStat™ desktop application. This software enables batch download, CSV/Excel export, graphical trend analysis, calibration report generation, and GLP-compliant PDF certificate creation. Firmware updates are performed over USB without external hardware. Internal memory maintains data integrity during power loss, and selective record deletion (single, range, or full wipe) preserves regulatory compliance without compromising historical continuity.
Applications
- Regulatory field monitoring per Clean Water Act (CWA) and NPDES permit requirements
- Wastewater treatment plant process control (aeration basin DO profiling, nitrification/denitrification optimization)
- Aquatic ecosystem assessment (eutrophication studies, hypoxia mapping, benthic respiration assays)
- Drinking water distribution system integrity verification (residual oxygen stability)
- Pharmaceutical water system validation (PW, WFI per USP )
- Educational laboratories requiring NIST-traceable, student-safe instrumentation
FAQ
Does the Orion Star A support both polarographic and optical DO probes interchangeably?
Yes—the instrument auto-detects probe type upon connection and applies appropriate signal conditioning, calibration algorithms, and unit conversion logic.
Is atmospheric pressure compensation mandatory for accurate DO measurement?
Yes—barometric pressure directly affects oxygen partial pressure; the built-in pressure sensor (±0.5 mmHg accuracy) enables real-time compensation per Henry’s Law calculations.
Can calibration be performed in the field without laboratory infrastructure?
Yes—air-saturation and zero-oxygen calibrations require only ambient air and sodium sulfite solution; no titration setup is needed for routine verification.
How is data security maintained during transfer from instrument to PC?
All USB transfers occur in read-only mass storage mode; no executable code is executed on the host PC, eliminating malware vectors while preserving raw .csv integrity.
What documentation accompanies the instrument for quality assurance purposes?
Each unit ships with a NIST-traceable Certificate of Conformance, factory calibration report, and electronic GLP configuration guide compliant with ISO/IEC 17025 Clause 7.7.
