JT33 TDLAS analyzer featuring closed enclosure with window

JT33 TDLAS gas analyzer

Reliable H₂S measurement for increased quality, process control, and asset integrity

JT33

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Specs at a glance

Analyte and measurement ranges

H2S (Hydrogen sulfide):
0 to 10 ppmv
0 to 500 ppmv
other ranges by request
Hazardous area approvals

ATEX/IECEx/UKEx Zone 1
CSA Class I, Division 1
CSA Class I, Zone 1

See all specifications

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

Tunable diode laser absorption spectroscopy (TDLAS)

Optimize plant safety and availability. Tunable diode laser absorption spectroscopy (TDLAS) rapidly and reliably measures concentrations in process gas streams in real time.
- More information
Smart instrumentation through Heartbeat Technology

You want to increase plant performance and reduce costs? Our smart instrumentation portfolio with Heartbeat Technology offers in-depth device insight for more cost-efficiency and operational safety.
- More information

Xpert selection

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

Xpert: Master your most challenging applications

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Success stories

Raman spectroscopic analysis of slurry polymerization

Borealis is monitoring of polypropylene and polyethylene grades during olefin polymerization reactions in continuously fed loop reactors in the Chemical Industry.
Read the full story
Measuring hydrogen quality in real time

Enapter uses optical analytical measurement technology from Endress+Hauser to determine the purity of hydrogen produced. Find out more!
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Hydrogen blending for natural gas-fired turbines

Long Ridge Energy power plant is successfully showcasing the viability of clean hydrogen in the global Power & Energy industry.
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Measuring principle

TDLAS
Channels

1
Analyte and measurement ranges

H2S (Hydrogen sulfide):
0 to 10 ppmv
0 to 500 ppmv
other ranges by request
Measured variables

Concentration
Cell pressure
Cell temperature
Ambient temperature range

JT33 TDLAS gas analyzer system:
–20 to 50 °C (–4 to 122 °F)
–10 to 60 °C (14 to 140 °F)
Operating pressure range

Application dependent
800 to 1200 mbara (standard)
800 to 1700 mbara (optional)
Analyzer wetted materials

316L stainless steel
FKM O-Rings
Glass
PCTFE/PTFE
Power supply

For controller (spectrometer):
AC 100 to 240 V tolerance ±10 %, 50/60 Hz, 10W
DC 24 V tolerance ±20 %, 10W
UM = AC 250 V
For sample conditioning system electronics:
AC 100 to 240 V ±10 %, 50/60 Hz, 275W
UM = AC 250 V
Communication

I/O1: Modbus RTU/RS485 or Modbus TCP/Ethernet
I/O2 and 3: Relay output or Universal I/O (UIO); UIO can be configured as analog input/output (4-20 mA) or digital/status output
Service web server interface: Ethernet RJ45
Housing materials

Electronics: Coated copper-free aluminum or Cast stainless steel
Sample system enclosure: 304 stainless steel or 316 stainless steel
Sample system panel: Anodized aluminum
Enclosure window (optional): Polycarbonate
Hazardous area approvals

ATEX/IECEx/UKEx Zone 1
CSA Class I, Division 1
CSA Class I, Zone 1
Degree of protection

IP66, Type 4X
Product safety

CE
RCM
FCC
CRN

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JT33 TDLAS gas analyzer

Reliable H2S measurement for increased quality, process control, and asset integrity

Specs at a glance

Analyte and measurement ranges

Hazardous area approvals

Field of application

Benefits

Videos

Tunable diode laser absorption spectroscopy (TDLAS)

Smart instrumentation through Heartbeat Technology

Xpert selection

Success stories

Raman spectroscopic analysis of slurry polymerization

Measuring hydrogen quality in real time

Hydrogen blending for natural gas-fired turbines

Measuring principle

Channels

Analyte and measurement ranges

Measured variables

Ambient temperature range

Operating pressure range

Analyzer wetted materials

Power supply

Communication

Housing materials

Hazardous area approvals

Degree of protection

Product safety

Back

Cover with glass, aluminum, for J series

Cover for electronics, aluminum

Protective cover for J series analyzer

Display module, for J series TDLAS

Module, cartridge, for J series TDLAS

Connection terminal, for J series TDLAS

Memory, T-DAT, for J series TDLAS

Memory, micro SD card, for J series

Power supply, 100 - 230 VAC, J series

Power supply, 24 VDC, for J series TDLAS

Module, I/O, configurable, J series

Module, relay output, for J series TDLAS

RS485 module, slot 1, for J series TDLAS

Relief valve, 10-250 psi, 1/4" x 1/4"

Flowmeter, glass, 0-2 SLPM

Flowmeter, glass, 1.38 SLPM, premium opt

Flowmeter, armored, 2.6 SLPM

Flowmeter, armored, premium option

Bracket for premium glass flowmeter

Bracket for premium armored flowmeter

Bracket for armored flowmeter

Kit, JT33, cover, optical head enclosure

Kit, regulator fitting

Kit, JT33, far mirror

Kit, service tools 02

Kit, connection terminals, heater/power

Kit, fuses, MAC

Kit, fuses, MAC

Kit, interface RS485, MAC to OHE

Kit, interface thermistor, MAC to SCS

Kit, MAC, union and conduit

Kit, membrane seperator, 123

Kit, membrane element

Kit, filter, 7 micron

Kit, check valve

Kit, premium pressure regulator

Kit, pressure regulator

Kit, flowmeter, glass, 2slpm, H2

Kit, flowmeter, premium, glass, 2slpm, H

Kit, flowmeter, arm, 2slpm, H2

Kit,flowmeter, premium,arm,2slpm,H2

Kit, flowmeter, glass, 6slpm, AIR

Kit, flowmeter, glass, 6slpm, H2

Kit,flowmeter,premium,glass,6slpm,air

Kit, flowmeter, premium, glass, 6slpm,H2

Kit, flowmeter, , arm, 6slpm, air

Kit, flowmeter, arm, 6slpm, H2

Kit, gas fittings for flowmeters

Kit, valve, manual validation

Kit, fittings, membrane separator

Display cover, stainless steel

Reliable H₂S measurement for increased quality, process control, and asset integrity