Tunable Diode Laser (TDL) Gas Analyzers
Tunable Diode Laser (TDL) Gas Analyzers

Tunable Diode Laser (TDL) Gas Analyzers

Reliable, low-maintenance gas measurement in situ and in extractive applications

 

Tunable Diode Laser Gas Analyzers from METTLER TOLEDO

Interference-free, drift-free tunable diode laser technology offers better process control and lower maintenance costs.

However, for rel...

Interference-free, drift-free tunable diode laser technology offers better process control and lower maintenance costs.

However, for reliable measurement with a tunable diode laser gas analyzer, or TDL gas analyzer for short, sometimes the required framework conditions such as minimum optical path length, the availability of a purge gas supply and/or maximum dust load get in the way. 

Acknowledging these constraints, METTLER TOLEDO has developed specific process interface solutions that substantially increase the coverage of possible tunable diode laser gas analysis applications. 

Based on the folded optical path principle, METTLER TOLEDO’s range of compact tunable diode laser spectrometers and unique process adaptions, for process, safety, combustion, and vapor recovery applications are essential instruments for improving your processes:

  • Versatility in monitoring your process
  • Simplicity to ease field operations
  • Performance that gives you a leading edge

METTLER TOLEDO's unique process adaptions, make it possible to use a TDL gas analyzer in applications previously considered impossible for an in situ TDL analyzer.


 
Measure Where it Matters
Eliminate the Need for Alignment

Tangible Performance, Minimal Maintenance

Products and Specs

Measure gas where it matters

 
Products and Specs
Filter:
Set filter
Clear All
 
Gas Measured
Effective path length
Lower Detection Limit
See details
Gas MeasuredOxygen
Effective path length50mm - 10m, depending on adaption
Lower Detection Limit100 ppm-v
Measurement range0-100%
Accuracy2% of reading or 100ppm O₂, whichever is greater
LinearityBetter than 1%
Resolution<0…01% vol O₂ (100ppm-v)
DriftNegligible (<2% of measurement range between maintenace intervals)
Sampling rate1 second
Response time (T90)O₂ in N₂ 21%>0% in <2 seconds
Repeatability± 0.25% of reading or 0.05% O₂ (whichever is greater)
Process pressure range0.8 bar - 5 bar (abs)/11.6 psi - 72.52 psi (abs)
Process temperature range0-250°C (23-482°F); Optional(for probe installation)
0-600°C (0-1112°F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredHydrogen chloride
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit0.6 ppm-v
Measurement range0-1% under standard conditions
Accuracy2% of reading or 1000 ppm, whichever is greater
LinearityBetter than 1%
Resolution0.6 ppm-v
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)HCL in N2 1% to 0% in <4 seconds
Repeatability±0.25% of reading or 3 ppm-v HCl (whichever is greater)
Process pressure range0.8 bar - 3 bar (abs)/11.6 psi - 43 psi (abs)
Process temperature range0-250 °C (23-482 °F); Optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionAnalyzer for detection of HCl in a gas stream. Must be paired with a process adaption.
See details
Gas MeasuredHydrogen sulfide
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit20 ppm-v
Measurement range0-50%
Accuracy2% of reading or 1000 ppm, whichever is greater
LinearityBetter than 1%
Resolution20 ppm-v
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)H₂S in N₂ 1% to 0% in <4 seconds
Repeatability±0.25% of reading or 100 ppm-v H₂S (whichever is greater)
Process pressure range0.8 bar - 3 bar (abs)/11.6 psi - 29 psi (abs)
Process temperature range0-250 °C (23-482 °F); optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredCarbon monoxide
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit1 ppm-v
Measurement range0-120,000 ppm (0-2%)
Accuracy2% of reading or 1 ppm, whichever is greater
LinearityBetter than 1%
Resolution1 ppm-v
DriftNegligible (<2% of measurement range between maintenace intervals)
Sampling rate1 second
Response time (T90)CO in N₂ 300 ppm-v to 0% in <4 seconds
Repeatability±0.25% of reading or 5 ppm-v CO (whichever is greater)
Process pressure range0.8 bar - 2 bar (abs)/11.6 psi - 29. psi (abs)
Process temperature range0-250 °C (23-482 °F); optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredMoisture / water vapor
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit5 ppm-v
Measurement range0-200,000 ppm (0-2%)
Accuracy2% of reading or 10 ppm, whichever is greater
LinearityBetter than 1%
Resolution5 ppm-v
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)H₂O in N₂ 1% to 0% in <4 seconds
Repeatability±0.25% of reading or 50 ppm-v H20 (whichever is greater)
Process pressure range0.8 bar - 3 bar (abs)/11.6 psi - 29 psi (abs)
Process temperature range0-250 °C (23-482 °F); optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredCarbon monoxide (CO%)
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit1500 ppm-v
Measurement range0-100%
Accuracy2% of reading or 1500 ppm, whichever is greater
LinearityBetter than 1%
Resolution1500 ppm-v
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)CO in N₂ 300 ppm-v to 0% in <4 seconds
Repeatability±0.25% of reading or 0.75-v CO (whichever is greater)
Process pressure range0.8 bar - 1.5 bar (abs)/11.6 psi - 21.7 psi (abs)
Process temperature range0-250 °C (23-482 °F); Optional (for probe installation) 0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredCarbon dioxide (CO₂%)
Effective path lengthProbes: 100, 200, 400 mm (3.94", 7.87", 15.75")
Wafer Cell: 50, 80, 100 mm (1.96", 3.15", 3.94")
Extractive cell: 200, 400, 800, 1000mm, 10m.
Lower Detection Limit1000 ppm-v
Measurement range0–100%
Accuracy2% of reading or 1000 ppm, whichever is greater
LinearityBetter than 1%
Resolution1000 ppm-v
DriftNegligible (< 2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)CO2 in N2 1% to O% in < 4 sec
Repeatability± 0.25% of reading or 5000 ppm-v CO2 (whichever is greater)
Process pressure range0.8 bar – 2 bar (abs)/ 11.6 psi – 29.psi (abs)
Process temperature range0 – + 250 °C (+ 32 –+ 482 °F) Optional (for probe installation) 0 – + 600 °C (0 – +1112 °F) with additional thermal barrier,
0 – + 150 °C (+ 32 –+ 302 °F) (White cell)
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredCarbon Dioxide (CO₂%) & Carbon Monoxide (CO%)
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit1000 ppm-v (CO2)
1500 ppm-v (CO)
Measurement range0-100%
Accuracy2% of reading or 1000ppm, whichever is greater
LinearityBetter than 1%
Resolution1000 ppm-v
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)CO₂ in N₂ 1% to 0% in <4 seconds
Repeatability±0.25% of reading or 5000ppm-v CO2 or CO (whichever is greater)
Process pressure range0.8 bar - 2 bar (abs)/11.6 psi - 29 psi (abs)
Process temperature range0-250 °C (23-482 °F); Optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredIntegrates with GPro 500 analyzers for Oxygen, CO2, CO, HCl, H2S, Mositure, Methane, Ammonia
Effective path length100, 200, 400mm (3.94", 7.87", 15.75")
Lower Detection LimitBased on analyzer chosen
Short descriptionThis process adaption connects to a Gpro 500 gas analyzer for installation at a standard measurement location
See details
Gas MeasuredMethane (CH4)
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit1 ppm-v
Measurement range0 – 1%
Accuracy2% of reading or 1 ppm, whichever is greater
LinearityBetter than 1%
Resolution1 ppm
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)CH4 in N2 1% to 0% in < 4 sec
Repeatability±0.25% of reading or 5 ppm-v CH4 (whichever is greater)
Process pressure range0.8 bar - 3 bar (abs)/11.6 psi - 43 psi (abs)
Process temperature range0-250 °C (23-482 °F); optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
See details
Gas MeasuredAmmonia (NH3)
Effective path length50 mm - 10 m, depending on adaption
Lower Detection Limit1 ppm-v
Measurement range0 – 1%
Accuracy2% of reading or 1 ppm, whichever is greater
LinearityBetter than 1%
Resolution1 ppm
DriftNegligible (<2% of measurement range between maintenance intervals)
Sampling rate1 second
Response time (T90)NH3 in N2 1% to 0% in < 4 sec
Repeatability±0.25% of reading or 5 ppm-v NH3 (whichever is greater)
Process pressure range0.8 bar - 3 bar (abs)/11.6 psi - 43 psi (abs)
Process temperature range0-250 °C (23-482 °F); optional (for probe installation)
0-600 °C (0-1112 °F) with additional thermal barrier
Short descriptionExceptional ease of use and almost zero maintenance
Comparison

Documentation

Learn more about our TDL Gas Analyzers

Brochures

Gas Analytics Brochure
Safety, quality, productivity: that’s what’s most important to you. And that’s why our approach to designing analyzers and sensors is based around a s...

White papers

White Paper: TDLs for All Your Processes – Folded-Path Gas Analyzers
Our portfolio of folded-path tunable diode laser (TDL) gas analyzers now has a unique range of process adaptions. Combined, they have opened the door...
No More Purge Gas-New TDLs for Combustion Processes
This white paper explains how the new generation of TDLs not only offers exceptional fuel costs savings, but eliminates the need for process side purg...
Measurement of Oxygen Concentration
Gaseous oxygen measurement with amperometric sensors is the most direct and easiest solution for protection against oxidation and explosion.
Inerting Made Efficient, Replacing Extractive Oxygen Analyzers
Manufacturing operations must keep output and quality their top priority. Switching from maintenance-intensive on-line extractive systems to a more re...
Measurement of Oxygen Concentration
Gaseous oxygen measurement with amperometric sensors is the most direct and easiest solution for protection against oxidation and explosion.
Polarographic Oxygen Measurement
For the measurement of oxygen in continuous process analysis, several technologies are available.
Minimizing Inerting System Maintenance
This white paper explains how TDL O₂ sensor can minimize inerting system maintenance & how to integrate them into a DCS system for fully automated oxy...
Gas Analysis Made Easy
Tunable Diode Laser (TDL) oxygen sensors from METTLER TOLEDO unite the best elements of two technologies to form a highly dependable monitoring system...

Manuals

Safety Manual for TDLS GPro 500 - Tunable Diode Laser Spectrometer
This document contains information and safety instructions required to use the GPro 500 with direct analog output option in SIL environments.

Services

Maximum Benefits from the Start

Performance
Maintenance & Optimization
Expertise
Training & Consulting
 
 
 
 
 
 
 
Thank you for visiting www.mt.com. We have tried to optimize your experience while on the site, but we noticed that you are using an older version of a web browser. We would like to let you know that some features on the site may not be available or may not work as nicely as they would on a newer browser version. If you would like to take full advantage of the site, please update your web browser to help improve your experience while browsing www.mt.com.