GS8200-UV Process SO₂/NOₓ Analyzer
UV fluorescence process analyzer for real-time SO₂ and NOₓ control
- SO₂ Range
- 0-5000 ppm
- NOₓ Range
- 0-3000 ppm
- Response
- <5s T90
- Detection
- 0.5 ppm SO₂
Overview
Fast-response UV fluorescence analyzer for SO₂ and chemiluminescence for NOₓ, designed for process optimization in FGD, SCR/SNCR systems, and refinery operations.
- Dual-detector for SO₂ + NOₓ
- Fast response for process control
- Heated wetted parts to 200°C
- Integrated sample conditioning
Full Technical Specifications
Key Performance
| Metric | Value | Status |
|---|---|---|
| SO₂ Range | 0-5000ppm | confirmed |
| NOₓ Range | 0-3000ppm | confirmed |
| Accuracy | ±1% of reading | confirmed |
| Response | <5 s T90 | confirmed |
| Detection | 0.5 ppm SO₂ | confirmed |
Measurement
| Specification | Value |
|---|---|
| Measuring Principle | UV Fluorescence (SO₂) + Chemiluminescence (NOₓ) |
| SO₂ Range | 0–5000 ppm |
| NOₓ Range | 0–3000 ppm |
| Accuracy | ±1% of reading |
| Response Time (T90) | <5 s |
| Detection Limit | 0.5 ppm SO₂ |
Physical
| Specification | Value |
|---|---|
| Dimensions (W×H×D) | 483 × 177 × 420 mm (19″ rack) |
| Weight | 16.2 kg |
| Housing Material | Powder-coated aluminum, SS316L wetted parts |
| Mounting | 19″ rack (4U) / wall-mount |
Electrical
| Specification | Value |
|---|---|
| Power Supply | 100–240 VAC, 50/60 Hz, 95 W |
| Analog Output | 2 × 4–20 mA |
| Digital Output | Modbus RTU/TCP, HART 7 |
| Relay Outputs | 4 × SPDT |
| Display | 5″ color TFT touchscreen |
Environmental
| Specification | Value |
|---|---|
| Operating Temperature | -20 °C to +50 °C |
| Sample Temperature | Up to 200 °C (heated wetted parts) |
| Sample Pressure | -50 to +500 mbar |
| Humidity | 0–95 % RH |
Certifications
| Specification | Value |
|---|---|
| EMC | EN 61326-1 |
| Safety | EN 61010-1 |
| Quality | ISO 9001:2015 |
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 | Process SO₂/NOₓ analyzer | Project variant | approved | On request |
| UKCA | Approval listed in existing certification detail | Project variant | approved | On request |
| EN 61010-1 / EN 61326-1 | Safety and EMC standards listed in specifications and certification detail | Project variant | approved | On request |
| ISO 9001:2015 | Quality standard listed in specifications and certification detail | Project variant | approved | On request |
Request Documentation
Request technical datasheets, user manuals, certificates, and application notes for this model.
Evidence Notes
Heated-wetted-parts SO₂/NOₓ analyzer for tail-gas process control
Application note based on the existing sulfur-recovery scenario: fast-response UV and CLD measurement with heated wetted parts supports air-injection control review at the tail-gas incinerator outlet. Control-loop behavior depends on sample transport, DCS tuning, and local emission program requirements.
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
UV fluorescence measures SO₂ by pulsed UV excitation, while chemiluminescence measures NOₓ for process-control feedback.
Requires
- Heated wetted parts when condensation risk is present
- Integrated sample conditioning or a compatible sampling system for high-moisture duty
- Configured analog or digital output mapping for DCS control loops
Interferents and Limits
- H₂O vapor when the sample is not kept above condensation conditions
- CO₂ continuum/background absorption where UV optical compensation is site-configured
- Particulate matter that reaches the optical path without filtration
- Very high moisture service without GS-SCS-800 or equivalent heated sampling review
- Sample pressure outside the stated specifications range
02 Operating Envelope
Use these limits as selection inputs, then confirm sample condition, ambient exposure, and materials before quotation.
- Very high moisture sample without heated sampling system review
- Sample pressure outside stated process inlet range
03 Sample System Boundary
Sampling mode, conditioning components, and exclusions define where the analyzer responsibility ends and the sample system begins.
- heated wetted parts to 200°C
- integrated sample conditioning
- 19-inch rack or wall-mount analyzer
- Very high moisture service should be reviewed against the GS-SCS-800 heated sampling path stated in FAQ
04 Calibration & Validation
Calibration method, interval, traceability, and audit support are shown only when structured data is available. Confirm zero/span method, interval, and traceable span gas during project review for this model.
05 I/O & Integration
Signal outputs and communication interfaces shown from the published specification fields on this product page.
Analog Output
2 × 4–20 mA
Digital Output
Modbus RTU/TCP, HART 7
Relay Outputs
4 × SPDT
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.
- Sample conditioning path inspection for moisture and particulate load
- Heated wetted-parts condition review for high-moisture samples
- Optical path and filter inspection per site dust load
- Sample filters
- Reference gas when site span checks are performed
07 Application Evidence
Application context from complex industrial environments.
Application Context
Sulfur recovery units need <5 s SO₂ response at the Claus tail-gas incinerator outlet to enable real-time air-injection control, but standard analyzers introduce sampling delays that prevent closed-loop tuning.
Architecture Response
GS8200-UV with heated wetted parts achieves <3 s T90 response, so the DCS can adjust air injection in real-time and support tighter tail-gas SO₂ control aligned with regional emission limits.
Frequently Asked Questions
Why is fast response time important for process control?
In FGD and SCR control loops, sub-5-second response allows the DCS to adjust reagent dosing before process excursions reach the stack. Slower analyzers cause oscillation and reagent waste.
Can it handle high-moisture samples?
Yes, the heated wetted parts (200°C) reduce condensation risk. For very high moisture (>40% H₂O), pair with the GS-SCS-800 heated sampling system.
What is the UV fluorescence detection principle?
Pulsed UV light excites SO₂ molecules, which emit fluorescent light proportional to concentration. This provides ppb-level sensitivity with matrix effects managed through optical filtering and calibration.
What outputs does it support?
2×4-20mA isolated analog, Modbus RTU/TCP, and HART 7. Optional OPC-UA gateway available for Industry 4.0 integration.
Is it suitable for Claus tail gas applications?
Yes, specifically designed for SRU monitoring with heated wetted parts and materials resistant to sulfur compounds (SS316L/Hastelloy optional).
Related & Alternatives
Alternative Solutions
Related Measurement Technologies
Measuring more than just so₂/noₓ? Explore complementary analytical categories.
Compare GS8200-UV with adjacent options
Review neighboring models by technology, range, accuracy basis, and form factor before moving to quotation.
When this model is preferred
Select GS8200-UV 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 GS8200-UV against site conditions
Send gas range, sample temperature, pressure, moisture, and certification needs before final model selection.