GS8120-O2 Laboratory Oxygen Analyzer
Bench-top precision O₂ analysis for R&D and quality labs
- Range
- 0-100 %vol O₂
- Accuracy
- ±0.02 %vol
- Resolution
- 0.001 %vol
- Interface
- RS-232, USB, Ethernet
Overview
High-precision laboratory oxygen analyzer with paramagnetic detection for research, quality control, and certification testing requiring traceable accuracy.
- NIST-traceable calibration
- Built-in barometric compensation
- Programmable measurement sequences
- GLP/GMP compliant data output
Full Technical Specifications
Key Performance
| Metric | Value | Status |
|---|---|---|
| Range | 0-100%vol O₂ | confirmed |
| Accuracy | ±0.02%vol | confirmed |
| Resolution | 0.001%vol | confirmed |
| Interface | RS-232, USB, Ethernet | confirmed |
Measurement
| Specification | Value |
|---|---|
| Measuring Principle | Paramagnetic (thermomagnetic) |
| Measurement Range | 0–100 %vol O₂ (4 auto-ranging scales) |
| Accuracy | ±0.02 %vol |
| Resolution | 0.001 %vol |
| Linearity | ±0.01 %vol FS |
Physical
| Specification | Value |
|---|---|
| Dimensions (W×H×D) | 350 × 150 × 380 mm |
| Weight | 8.5 kg |
| Housing Material | Powder-coated steel, bench-top |
| Display | 7″ color touchscreen |
Electrical
| Specification | Value |
|---|---|
| Power Supply | 100–240 VAC, 50/60 Hz, 45 W |
| Analog Output | 1 × 4–20 mA (isolated) |
| Digital Output | RS-232, USB, Ethernet |
| Data Storage | Internal SD card, unlimited logging |
Environmental
| Specification | Value |
|---|---|
| Operating Temperature | +5 °C to +40 °C |
| Humidity | 20–80 % RH (non-condensing) |
| Vibration | Lab-grade anti-vibration feet |
| Warm-up Time | <30 min to full spec |
Certifications
| Specification | Value |
|---|---|
| EMC | EN 61326-1 |
| Safety | EN 61010-1 |
| Quality | ISO 17025 calibration available |
| GxP | 21 CFR Part 11 capable |
Where This Analyzer Fits
This model is mapped to the following industry applications and process duties.
Deployment Environments
Common process environments where this model is evaluated.
Certification Scope
Standards are listed with scope and status so engineering review can verify the applicable enclosure, area, and safety case.
| Standard | Scope | Variant | Status | Document |
|---|---|---|---|---|
| CE | Laboratory oxygen analyzer | Laboratory variant | approved | On request |
| UKCA | Approval listed in existing certification detail | Laboratory variant | approved | On request |
| ISO 17025 calibration available | Calibration-service availability stated in Certifications specifications | Laboratory variant | conditional | On request |
| 21 CFR Part 11 capable | Electronic-record capability described in specifications and FAQ | Laboratory variant | conditional | On request |
Request Documentation
Request technical datasheets, user manuals, certificates, and application notes for this model.
Evidence Notes
Headspace oxygen analysis for regulated laboratory records
Application note based on the existing pharmaceutical QC scenario: GLP data output and traceable calibration support electronic-record review for nitrogen-purged vial packaging. Validation scope should be confirmed against site procedures.
Technical & Engineering Details
Secondary engineering detail — expand each topic for the full measurement, envelope, sample-system, calibration, integration, maintenance and application evidence.
01 Measurement Principle and Limits
How the measurement is bounded
Paramagnetic O₂ detection for laboratory oxygen analysis where traceable calibration and stable bench-top operation are required.
Requires
- NIST-traceable calibration certificate and annual recalibration cadence
- Sample flow from 50-500 mL/min at atmospheric pressure
- Warm-up time before full specification measurement
Interferents and Limits
- Pressurized samples require pressure regulation to near-ambient inlet pressure
- Bench-top laboratory operation inside stated ambient and humidity ranges
02 Operating Envelope
Use these limits as selection inputs, then confirm sample condition, ambient exposure, and materials before quotation.
- Pressurized sample feed without pressure regulation to near-ambient inlet pressure
- Operation outside the stated laboratory ambient and humidity ranges
03 Sample System Boundary
Sampling mode, conditioning components, and exclusions define where the analyzer responsibility ends and the sample system begins.
- internal sample pump
- optional pressure regulator for pressurized samples
- No external extractive conditioning system is declared for this laboratory SKU
04 Calibration & Validation site-specific
Calibration method, interval, traceability, and audit support are shown only when structured data is available.
Zero / Span Method
NIST-traceable calibration certificate supplied; detailed zero/span method not stated in v1 source data
Interval
Annual recalibration recommended
Span Gas Traceability
NIST-traceable calibration chain
Audit Support
- 21 CFR Part 11 electronic-record capability
- GLP/GMP data-output context
05 I/O & Integration
Signal outputs and communication interfaces shown from the published specification fields on this product page.
Interface
RS-232, USB, Ethernet
Analog Output
1 × 4–20 mA (isolated)
Digital Output
RS-232, USB, Ethernet
Data Storage
Internal SD card, unlimited logging
DAHS Review Note
Confirm protocol map, channel naming, alarm states, and reporting format during project integration review.
06 Maintenance & Spares site-specific
Tasks, consumables, and access items are shown only when structured maintenance data is available.
- Annual recalibration per FAQ recommendation
- Sample-flow path and internal pump review per laboratory procedure
- Calibration gas and certificate renewal as required by lab procedure
Bench-top laboratory service access
07 Application Evidence
Reviewed application context for engineering selection.
Application Context
Pharma manufacturers running headspace QC on nitrogen-purged vial packaging need O₂ analysis that aligns with 21 CFR Part 11 audit-trail expectations, and paper-based record-keeping is no longer accepted by inspectors.
Architecture Response
GS8120-O2 with GLP data output and NIST-traceable calibration provides electronic-record evidence aligned with FDA computerized-system expectations, supporting audit-ready operation.
Frequently Asked Questions
What does NIST-traceable calibration mean?
The GS8120-O2 ships with a NIST-traceable calibration certificate, meaning each unit’s accuracy is verified against reference standards with an unbroken chain to the National Institute of Standards and Technology. Annual recalibration is recommended to maintain traceability.
How does the GS8120-O2 support 21 CFR Part 11 compliance?
The analyzer provides electronic signatures, a tamper-proof audit trail, and configurable user access levels (admin, operator, viewer). All measurement data is stored with timestamps and user IDs, meeting FDA requirements for electronic records.
Does the GS8120-O2 compensate for barometric pressure changes?
Yes. A built-in barometric pressure sensor automatically corrects O₂ readings for altitude and weather-related pressure changes, ensuring consistent accuracy without manual adjustment.
What are the sample flow requirements?
The GS8120-O2 accepts sample flow rates of 50–500 mL/min at atmospheric pressure. An internal sample pump is included. For pressurized samples, use the optional pressure regulator to reduce inlet pressure to near-ambient.
How long does the GS8120-O2 take to warm up?
The analyzer reaches full specification accuracy (±0.02 %vol) in under 30 minutes. For less critical measurements, readings within ±0.05 %vol are available after approximately 15 minutes.
Related & Alternatives
Alternative Solutions
Related Measurement Technologies
Measuring more than just oxygen? Explore complementary analytical categories.
CO / CO₂
CO/CO₂ Analyzers
Non-dispersive infrared (NDIR) analyzers for carbon monoxide and carbon dioxide measurement in combustion control, emission monitoring, and indoor air quality applications.
View Products
Multi
Multi-Gas Analyzers
Simultaneous multi-component gas analysis using FTIR, NDIR, and combined-sensor platforms for complex process streams, comprehensive CEMS, and research applications.
View ProductsCompare GS8120-O2 with adjacent options
Review neighboring models by technology, range, accuracy basis, and form factor before moving to quotation.
When this model is preferred
Select GS8120-O2 when its measurement principle, range, and form factor match the process duty and certification scope.
When to consider an alternative technology
Consider another analyzer when the gas matrix, sample temperature, hazardous-area scope, or reporting requirement falls outside the stated envelope.
Review GS8120-O2 against site conditions
Send gas range, sample temperature, pressure, moisture, and certification needs before final model selection.