 
                  Specs at a glance
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                              Measuring principleTDLAS 
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                              Analyte and measurement rangesH2S (Hydrogen sulfide): 
 0 to 10 ppmv
 0 to 500 ppmv
 other ranges by request
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                              Hazardous area approvalsATEX / IECEx /UKEx Zone 1 
 PESO / KTL / JPNEx Zone 1
 INMETRO Zone 1
 CNEx Zone 1
 CSA Class I, Division 1
 CSA Class I, Zone 1
Field of application
The JT33 gas analyzer offers continuous, real-time H2S measurement with low maintenance requirements. It enables plant operators and owners to meet gas quality standards, improve process control, and ensure asset integrity. Using proven differential technology, the JT33 tolerates stream changes while meeting measurement performance specifications. It also features auto-validation and advanced diagnostics supported by Heartbeat Technology for verification reporting.
- Natural gas, biomethane, and carbon dioxide pipelines: prevent corrosion and minimize the risk of an uncontrollable event, ensuring asset integrity 
- Natural gas and LNG plants: optimize gas sweetening processes (amine, solid scavengers, and others) 
- NGL, refining, and petrochemical gas streams: assure gas quality and asset protection in fractionization, refining, and stream cracking processes 
- Carbon capture processes (CCUS): monitor processes and ensure that CO2 meets quality specifications 
Benefits
- Continuous, real-time TDLAS measurements with proven metrology to meet measurement specifications 
- Robust patented differential technology which tolerates contaminants and stream changes in tough applications 
- Auto-validation to confirm analyzer health in the field 
- Heartbeat Technology for automatically stored historical data, spectrum logging, diagnostics, and verification reporting for custody transfer applications 
- NIST-traceable factory calibration with superior accuracy and repeatability 
- Field-serviceable components and modules for minimal downtime and maximum repair flexibility 
- User-friendly interface with an intuitive menu and integrated web server software 
Videos
Xpert selection
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        Specialized products 
- Designed for demanding applications
Technical excellence
Simplicity
Variable
 
                              - 
        Standard products 
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
- 
        Specialized products 
- Designed for demanding applications
Technical excellence
Simplicity
Variable
| FLEX selections | Technical excellence | Simplicity | 
|---|---|---|
| 
 Fundamental selection Meet your basic measurement needs | Technical excellence | Simplicity | 
| 
 Lean selection Handle your core processes easily | Technical excellence | Simplicity | 
| 
 Extended selection Optimize your processes with innovative technologies | Technical excellence | Simplicity | 
| 
 Xpert selection Master your most challenging applications | Technical excellence | Simplicity Variable | 
Predecessor
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                                                            Technical Information (TI)
 JT33 TDLAS gas analyzer Technical InformationSystem design and specifications for the 
 JT33 TDLAS gas analyzerEN 24/10/2024Language: English Version: 24/10/2024 File size: 4.6 MB File name: TI01722CEN_0324.pdf 
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                                                            Operating Instruction (BA)
 JT33 TDLAS gas analyzer Operating InstructionsCommissioning, operation, and maintenance details for the 
 JT33 TDLAS gas analyzerEN 19/12/202425/09/202401/03/2024Language: English Version: 19/12/2024 File size: 11.2 MB File name: BA02297CEN_0324.pdf 
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                                                            Device Parameter (GP)
 J22 and JT33 TDLAS Gas Analyzer Description of device parametersProvides customers with Modbus register information 
 needed to establish remote communication with the J22
 and JT33EN 19/03/202527/04/2023Language: English Version: 19/03/2025 File size: 2.3 MB File name: GP01198CEN_0223.pdf 
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                                                            Short Instruction (KA)
 JT33 TDLAS gas analyzer Brief Operating InstructionsQuick start guide for the JT33 TDLAS gas analyzer EN 25/09/2024Language: English Version: 25/09/2024 File size: 4.4 MB File name: KA01655CEN_0224.pdf 
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                                                            Installation Instructions (EA)
 J22 and JT33 Firmware upgrade installation instructionsJ22 and JT33 TDLAS gas analyzers Firmware Upgrade 
 Installation InstructionsLanguage: English Version: 18/10/2024 File size: 1.2 MB File name: EA01426CEN_0324.pdf 
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                                                            Installation Instructions (EA)
 J22 and JT33 Electronics and display replacement Installation InstructionsInstallation instructions for replacing J22 and JT33 TDLAS gas 
 analyzer electronics and displayLanguage: English Version: 01/11/2024 File size: 2.3 MB File name: EA01507CEN_0124.pdf 
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                                                            Installation Instructions (EA)
 JT33 TDLAS gas analyzer Installation InstructionsInstructions for scrubber and scrubber indicator replacement Language: English Version: 26/12/2024 File size: 2.2 MB File name: EA01518CEN_0124.pdf 
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                                                            Installation Instructions (EA)
 JT33 TDLAS gas analyzer Installation InstructionsInstallation instructions for validation and scrubber valve 
 replacement in the JT33 TDLAS gas analyzerLanguage: English Version: 09/07/2025 File size: 10 MB File name: EA01521CEN_0125.pdf 
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                                                            Ex Safety Instruction (XA)
 JT33 TDLAS gas analyzer Safety InstructionsATEX/IECEx/JPN: Zone 1 EN 01/04/2025Language: English Version: 01/04/2025 File size: 4.2 MB File name: XA03519CEN_0125.pdf 
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                                                            Ex Safety Instruction (XA)
 JT33 TDLAS gas analyzer Safety InstructionsATEX/IECEx/PESO: Zone 1 Language: English Version: 27/08/2025 File size: 3.9 MB File name: XA03651CEN_0125.pdf 
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