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Tunable Diode Laser Analyzers
Low-Maintenance TDL Analyzer for Gas Measurement
Tunable diode laser analyzers (TDL analyzers) are gas analyzers designed for measuring the concentration of specific species within a gas mixture using laser absorption spectrometry. TDL analyzers by METTLER TOLEDO are recognized as a low-maintenance tool built for speed and accuracy of measurement, and immunity to background gases. The GPro 500 series of tunable diode laser spectrometers offers a range of process adaptions to ensure your process needs and measurement requirements are met.
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TDL Analyzer to Fit Your Process Needs
The GPro 500 TDL analyzer offers adaptions to fit your process needs. Designs fit in pipes as small as DN50 (2"), and can measure accurately in high-dust, high-condensate and blanketing applications.
Eliminate the Need for Alignment
The METTLER TOLEDO TDL analyzer is built on a unique folded-path design, the laser source and detector are located in a single unit to perfectly reflect the laser beam to the detector.
Configure for Your Specific Requirements
The GPro 500 TDL analyzer offers a modular design, allowing you to select the process adaption that best fits your application, and match it with the gas parameter that you need to measure.
Minimal Maintenance Required
With maintenance-prone sampling and conditioning systems not required, these tunable diode laser analyzers provide consistent performance with maintenance needed only once per year.
TDL Spectrometer Built for Challenging Applications
TDL analyzers offer a robust construction, allowing the system to be immune to interference and suitable for the most challenging and critical applications.
Ensure Safety with Gas Measurement in Less Than 2 Seconds
These tunable diode laser gas analyzers can provide a measurement in less than 2 seconds. This allows users to take quick actions to mitigate explosive conditions from forming.
Wide Range of Measurement Parameters
METTLER TOLEDO TDL spectrometers can measure oxygen, carbon monoxide, carbon dioxide, moisture, hydrogen sulfide, hydrogen chloride, ammonia and methane.
Useful Related Links
Gas Analysis: Rethinking Gas Analytics
Rethinking Gas Analytics Across Process Industries. Plant safety, product quality, high productivity: that’s what’s most important to you. Read more
Safety Manual: GPro 500 TDL Gas Analyzer
The GPro 500 designed for continuous in situ monitoring of gases in stacks, pipes, ducts, extractive measurement cells etc. and it is based on tunable diode laser technology. Read more
Gas Analyzer Buying Guide
Selecting analyzers can be a tricky process, so a gas analyzer guide can be very useful. Having the right gas analyzer doesn’t just determine your process safety and efficiency, it can effect maintenance work and have an impact on the environment. Read more
TDLs for All Your Processes
In chemical plants, petrochemical plants, and refineries tunable diode lasers (TDLs) are becoming an increasingly common sight. Their high reliability and low maintenance has made them the gas analyzer technology of choice for many companies. Read more
5 Ways In Situ Gas Analyzers Improve Safety
In the chemical industry, safety during gas measurement is of the highest priority. Choosing the right measurement equipment is a challenge many companies face. Read more
Tunable Diode Laser Spectroscopy - Theory and Background
Since their first use in the 1990s, Tunable Diode Laser gas analyzers have seen rapid growth in industry due to their exceptional performance and reliability. Read more
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FAQs
What is a Tunable Diode Laser (TDL) analyzer?
Tunable diode laser analyzers, or TDL analyzers for short, are gas analyzers that are used for measuring the concentration of specific species within a gas mixture using laser absorption spectrometry. In a TDL analyzer, a laser beam, tuned to identify a particular gas species, passes through the gas to a detector. The presence of this gas in the stream causes light absorption and reduced signal intensity. The light collected at the detector of the TDL analyzer is detected by a photodiode and analyzed to quantify the gas concentration.
How can I reduce maintenance and installation costs with a TDL analyzer?
Installing a TDL in situ gas analyzer allows you to eliminate the sample conditioning system that is required with standard extractive techniques.
In addition, due to the one-flange, folded path concept showcased by METTLER TOLEDO's GPro 500 Gas Analyzer, you can further reduce the installation and maintenance costs related to typical TDL analyzer alignment.
What gas species can be measured with a TDL analyzer?
METTLER TOLEDO GPro 500 TDL Analyzers offer measurement of carbon monoxide (CO%), carbon dioxide (CO2%), hydrogen chloride (HCl), hydrogen sulfide (H2S), gaseous oxygen (O2), methane, ammonia and moisture. These can be paired with a wide range of process adaptions to provide the tunable diode laser analyzer to meet your requirements. For example, an oxygen gas analyzer can be paired with a filter probe to allow you to install an oxygen TDL analyzer in a gas stream that has heavy particulate. That same oxygen gas analyzer can be paired with a wafer adaption to create an in-line TDL gas analyzer for oxygen in a small line size (down to DN50).
What are some suitable applications for a TDL analyzer?
TDL gas analyzers are used in a wide range of applications across a variety of industries. Installations are common in chemical industries, petrochemical refining, pharmaceutical manufacturing, and food and beverage production.
In industries such as chlor-alkali, TDL analyzers by METTLER TOLEDO can replace traditional measurement systems for moisture monitoring to prevent compression system corrosion.
A GPro 500 with a filter probe adaption is optimal for process gas analyzers in combustion applications where high dust loads could typically obstruct measurement. This setup is particularly appropriate for fired heaters and boilers.
In inerting and blanketing applications, the use of a non-purge probe on a gas analyzer provides increased safety and reduces running costs.
For in situ gas analyzer measurement in DN50 or 2" pipes when you have high or low velocities or where you wish to avoid flow restrictions, the GPro 500 Wafer Cell adaption provides stable measurement.