Coming Soon Currently in pre-launch development Q4 2026
Sulfur Analysis Series
Model 820TGA

Model 820TGA Online Tail Gas Analyzer

Continuous online tail-gas analysis for sulfur recovery unit monitoring, Claus-process optimization, and emissions-control applications.

Brand: Blue Dragon Technology Supply & support: Blue Dragon Technology
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Product Overview

Purpose-built measurement, clearly presented.

Online tail-gas analyzer for sulfur recovery unit process monitoring, H₂S and SO₂ measurement, calculated sulfur ratio, and SRU performance applications.

Distinctive Capabilities

  • Simultaneous H₂S and SO₂ process measurement
  • Fast process feedback for sulfur recovery optimization
  • Project-engineered heated sample interface and conditioning
  • Configurable 4–20 mA outputs, alarms, and digital communications
Performance & Technical Data

The measurement method and the values that matter.

How it measures

Measurement Principle

The planned Model 820TGA platform continuously analyzes conditioned sulfur recovery tail gas for H₂S and SO₂. The analyzer calculates the H₂S-to-SO₂ ratio and can provide an air-demand indication where configured. Final optical detector architecture and validated performance will be stated in the approved product datasheet.

Analysis TimeConfiguration dependent; final performance value to be confirmed
Measurement ParametersHydrogen sulfide (H₂S) and sulfur dioxide (SO₂)
Calculated parametersH₂S-to-SO₂ ratio and air-demand indication where configured
Sample PhaseGas
Primary applicationSulfur recovery unit tail-gas monitoring
Process compatibilityClaus sulfur recovery and associated tail-gas treatment processes

Complete Technical Data

Measurement Principle
Continuous optical gas analysis; final detector configuration to be confirmed
Measurement ranges
Project-specific; final ranges will be published in the approved datasheet
Sample interface
Project-specific heated or conditioned sample interface
Analog outputs
Configurable 4–20 mA outputs according to the supplied system
Communications & Outputs
Industrial digital communications for DCS or PLC integration
Calibration
Zero and span validation using certified gases
Hazardous-area configuration
Project-specific certified configuration
Availability
Coming Soon — anticipated Q4 2026
Development notice

Product information shown on this page is preliminary. Final measurement components, ranges, accuracy, response time, optical configuration, sample-conditioning requirements, utilities, outputs, communications, hazardous-area approvals, dimensions, and installation arrangements will be published before commercial release.

Industrial Use

Applications and industries.

Typical Applications

Claus sulfur recovery unit tail-gas monitoringSulfur recovery efficiency assessmentH₂S and SO₂ process measurementCombustion-air and trim-air optimizationTail-gas treatment unit process monitoringSRU operating-performance monitoringIncinerator-feed and emissions-control process monitoringH2S / SO2 Ratio MeasurementSulfur Ratio / Air-Demand ControlSulfur Recovery & Tail Gas Monitoring

Industries Served

Natural Gas & LNGPetrochemicalsRefiningSulfur Recovery & Gas Treating
Project Delivery

Project Integration & Support Scope

Blue Dragon reviews the measurement objective, interfaces, documentation, commissioning, and lifecycle requirements as part of project configuration. The scope below identifies the principal items to confirm before order placement.

Measurement Objective
Continuous sulfur recovery unit tail-gas monitoring for H2S, SO2, calculated H2S-to-SO2 ratio, air-demand indication where configured, and SRU performance assessment.
Signal Outputs
The planned system provides configurable 4-20 mA outputs for measured and calculated values. Final output count, scaling, relays, and digital interfaces will be defined in the approved configuration.
Data Integration
The analyzer is intended for DCS or PLC integration using industrial analog and digital communications. Ratio, air-demand, status, alarm, and historian mapping must be confirmed in the project I/O and cause-and-effect documents.
Alarms & Diagnostics
Final process alarms, analyzer faults, sample-system diagnostics, heated-line status, calibration status, relay logic, and fail-safe behavior will be defined before commercial release and for each ordered system.
Documentation
The final project package is expected to include the approved datasheet, process and sample-system drawings, heat-trace and utility schedule, I/O list, communication information, calibration procedures, hazardous-area documents where applicable, and FAT or SAT records.
Commissioning Support
Planned commissioning includes heated extraction and transport checks, sample-flow and temperature verification, leak testing, zero and span validation, H2S and SO2 output checks, ratio and air-demand verification, alarm testing, DCS mapping, and operator training.
Lifecycle Support
Planned lifecycle support includes heated sample-system components, filters, valves, optical or detector components, calibration gases, heat tracing, troubleshooting, spare parts, repairs, and long-term technical assistance.
Online Analyzer Configuration

Sample System & Online Analyzer Readiness

Reliable online measurement depends on the process interface as well as the analyzer. Confirm the following application data before final configuration and quotation.

Sample Type & Phase
Conditioned gas from a Claus sulfur recovery unit tail-gas or related tail-gas treatment process, containing H2S and SO2 and potentially water vapor, sulfur vapor, acid gases, particulates, and other process components.
Measurement Range
Provide normal, minimum, maximum, startup, upset, and alarm concentrations for H2S and SO2, the required ratio and air-demand range, and the control objective. All final ranges and performance values remain project specific until the approved datasheet is issued.
Sample Conditions
Provide process pressure, temperature, moisture, sulfur-vapor and condensation risk, dust, acid-gas composition, oxygen, hydrocarbons, ammonia or other interferents, and expected startup and upset conditions.
Sample Handling
Define the extraction point, probe, heated transport, filtration, temperature control, pressure and flow regulation, condensation prevention, calibration routing, sample return or safe vent, and maintenance access.
Installation Area
Confirm analyzer shelter or cabinet, distance from the sample point, heat-traced routing, ambient conditions, maintenance access, safe-area or hazardous-area classification, and required certification.
Utilities
Confirm electrical power, heat-trace power, instrument air or purge, certified zero and span gases, calibration manifold, sample return or safe vent, drains where applicable, and communication cabling.
Response Requirement
Define whether the analyzer supports SRU optimization, ratio indication, air-demand guidance, alarm response, emissions-control process monitoring, or trending. Final response time will be governed by the approved detector and sample-system configuration.
Integration Requirement
Confirm 4-20 mA outputs for H2S, SO2, ratio, and air-demand where required, digital communication, DCS or PLC tags, historian data, alarm and fail-safe logic, and control-system ownership.
Commissioning Requirement
Verify extraction and heated transport, leak integrity, sample temperature and flow, zero and span gases, H2S and SO2 response, ratio calculation, air-demand output where configured, analog and digital signals, alarms, DCS mapping, and handover documentation.
Application Engineering

Plan the application before commercial release.

Share the sample, measurement range, operating conditions, project location, and timeline. Blue Dragon Technology will review the application and recommend the appropriate configuration.

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Product Family

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