GESHINE UV-DOAS Process Chlorine Analyzer
UV-DOAS chlorine analyzer for continuous process monitoring in chlor-alkali and chemical plants
- Principle
- UV-DOAS (differential optical absorption)
- Range
- Configured and confirmed at quotation
- Accuracy
- Confirmed for the selected range and matrix
- Output
- Project-configured I/O package
Overview
This UV-DOAS chlorine analyzer is configured for continuous gas-phase Cl₂ measurement in chlor-alkali production, water treatment and chemical processing. Range, response, wetted materials, enclosure and I/O are selected for the application and confirmed in the project quotation.
- UV-DOAS optical cell architecture
- Humidity and temperature compensation in the optical model
- Automatic reference spectrum compensation
- Corrosion-resistant wetted parts (project-configured for chlorine and acid-gas duty)
- Extractive sample conditioning selected for wet-stack or acid-gas duty
- Gas-phase Cl₂ configuration reviewed for the application matrix
Full Technical Specifications
Key Performance
| Metric | Value | Status |
|---|---|---|
| Measurement Principle | UV-DOAS (differential optical absorption spectroscopy) | confirmed |
| Range | Configured and confirmed at quotation | quotation confirmation |
| Accuracy | Confirmed for the selected range and gas matrix | quotation confirmation |
| Response | Confirmed for the optical path and sample arrangement | quotation confirmation |
| Output | Analog and digital I/O configured for the control system | quotation confirmation |
Specifications
| Specification | Value |
|---|---|
| Measurement Principle | UV-DOAS (differential optical absorption spectroscopy) |
| Target Component | Gas-phase Cl₂ |
| Range | Configured and confirmed at quotation |
| Accuracy | Confirmed for the selected range and gas matrix |
| Response | Confirmed for the optical path and sample arrangement |
| Wetted Materials | Selected for chlorine and acid-gas contact; confirmed at quotation |
| Output | Analog and digital I/O configured for the control system |
Deployment Environments
Common process environments where this model is evaluated.
Certification Scope
Applicable standards, enclosure, hazardous-area scope and safety documentation are confirmed for the supplied configuration during engineering review.
| Standard | Scope | Variant | Status | Document |
|---|---|---|---|---|
| Hazardous-area / functional safety | Applicable approvals are confirmed for the supplied enclosure, installation area and safety case | Project variant | project confirmation | On request |
Request Documentation
Request technical datasheets, user manuals, certificates, and application notes for this model.
Evidence Notes
Gas-phase UV-DOAS chlorine architecture
The application set covers chlor-alkali, chemical storage, pulp and paper, and gas-phase water-treatment dosing contexts. This gas analyzer path uses UV-DOAS, corrosion-resistant project-configured wetted parts, reference-spectrum compensation, and extractive sample conditioning where wet or acid-gas matrices are present.
Technical & Engineering Details
Secondary engineering detail — expand each topic for the full measurement, envelope, sample-system, and maintenance information.
01 Measurement Principle and Limits
How the measurement is bounded
UV-DOAS measures gas-phase Cl2 absorption with differential spectral processing for continuous process monitoring.
Requires
- Corrosion-resistant wetted parts (project-configured) for chlorine and acid-gas contact
- Reference-spectrum compensation for changing UV background
- Extractive sample conditioning selected for wet-stack or acid-gas duty
Interferents and Limits
- SO2, HCl, and HF spectral overlap can require matrix-specific compensation
- Aerosols or condensation in a wet-stack sample path can change the optical basis
- Aqueous free or total chlorine residual measurement is a separate aqueous water-domain path, not this gas-phase analyzer
- Wet-stack gas without heated or corrosion-resistant sample conditioning
- High SO2, HCl, or HF background without UV-DOAS matrix review
02 Operating Envelope
Use these limits as selection inputs, then confirm sample condition, ambient exposure, and materials before quotation.
- Cl2
- SO2/HCl/HF spectral-overlap matrix review
- Aqueous chlorine residual analysis
- Wet-stack or condensing duty without suitable heated sample conditioning
- Matrix with strong UV-absorbing acid gases without application review
03 Sample System Boundary
Sampling mode, conditioning components, and exclusions define where the analyzer responsibility ends and the sample system begins.
- UV-DOAS optical cell
- reference spectrum compensation
- corrosion-resistant wetted path (project-configured)
- extractive sample conditioning
- Aqueous sample panels are outside this gas-phase analyzer boundary
04 Maintenance & Spares site-specific
Routine service tasks, consumables, and access requirements for this analyzer; exact intervals are site-specific.
- Inspect UV optical path and corrosion-resistant wetted components for acid-gas service
- Review reference-spectrum compensation when Cl2, SO2, HCl, or HF matrix changes
- Confirm heated or cool-dry sample conditioning selection before wet-stack duty
- Sample-line filters or conditioning parts when configured extractively
Frequently Asked Questions
What does this analyzer measure, and how?
This analyzer uses UV differential optical absorption spectroscopy (UV-DOAS) to measure gas-phase Cl₂ with differential spectral processing for continuous process monitoring. Range, accuracy, response and sample handling are configured for the application and confirmed in the project quotation.
How does this analyzer handle corrosive chlorine and acid-gas service?
It uses corrosion-resistant wetted parts selected for chlorine and acid-gas contact, with the final material set confirmed at quotation. The operating envelope covers Cl₂ and an SO₂/HCl/HF spectral-overlap matrix review; matrices with strong UV-absorbing acid gases should be reviewed before application.
Which gases can interfere with the Cl₂ measurement?
SO2, HCl, and HF spectral overlap can require matrix-specific compensation. Aerosols or condensation in a wet-stack sample path can change the optical basis, and a high SO2, HCl, or HF background should get a UV-DOAS matrix review.
What sample conditioning does this analyzer require?
It runs in an extractive configuration with reference-spectrum compensation and a corrosion-resistant, project-configured wetted path; extractive sample conditioning is selected for wet-stack or acid-gas duty. The compatible conditioning systems are the ZS-SCS-600 Cool-Dry Sampling System and the ZS-SCS-800 High-Temperature Heated Sampling System. Aqueous sample panels are outside this gas-phase analyzer boundary.
Can this analyzer measure chlorine residual in water?
No. This is a gas-phase Cl₂ analyzer. Aqueous free or total chlorine residual measurement is a separate aqueous water-domain path, not this gas analyzer.
What approvals does this analyzer carry?
Applicable approvals, hazardous-area scope and any functional-safety documentation are confirmed against the supplied enclosure, installation area and safety case during engineering review.
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Send gas range, sample temperature, pressure, moisture, and certification needs before final model selection.