Yokogawa Electric Corporation announced that it has developed the TDLS8100 probe-type tunable diode laser spectrometer for sale as part of the OpreXTM analyzer series. The TDLS8100 is targeted for applications in petroleum, petrochemical, power, steel, and other industries that require direct high-speed measurement of oxygen or carbon monoxide gas concentrations. This new probe-type tunable diode laser spectrometer integrates a light transmitter and detector, greatly reducing the need for flange *1 and scaffolding installation, and the installation cost can be reduced by more than 50%.

In addition to the TDLS8000 tunable diode laser spectrometer for high temperature and high pressure gas concentration measurement applications, we have added a new product, the TDLS8100, for flow gas measurement where installation costs need to be reduced. With the addition of the TDLS8100, Yokogawa will be able to offer customers a wider choice of solutions to help them ensure safe operation and significantly improve energy efficiency. In the first half of this year, Yokogawa also plans to release a TDLS8100 model for measuring concentrations of ammonia and hydrogen chloride gases.

Development background

Plants use gas analyzers to obtain data on oxygen and carbon monoxide gas concentrations needed to optimize air-fuel ratios, thereby reducing energy consumption and ensuring safe operation and compliance with relevant environmental regulations.

There are various types of gas analyzers in use today, including zirconia, infrared, paramagnetic and laser gas analyzers. Laser gas analyzers can directly measure the concentration of gases absorbed in the near infrared region at high speed, such as oxygen, carbon monoxide, carbon dioxide, and ammonia. Such instruments do not require a sampling system and achieve excellent repeatability *2 and linearity *3. However, the cost of installing such analyzers is high due to the need to install flanges for light emitters and detectors on both sides of the pipe, as well as the need to install scaffolding to access both locations. With the development of the TDLS8100, Yokogawa reduced installation costs by more than 50%.

Product characteristics

1, greatly reduce the installation cost

When using a conventional gas analyzer, support flanges for the light emitter and detector must be installed on both sides of the pipe. To carry out the installation work and routine maintenance, permanent scaffolding must also be installed. In addition, temporary scaffolding must be set up to install special cables connecting the light transmitter and detector. Therefore, the installation cost of this gas analyzer requires a few million yen to 10 million yen *4. Because the TDLS8100 is equipped with an integrated light transmitter and detector, flanges and scaffolding need only be installed on one side of the pipe, reducing installation costs by more than 50%. This also eliminates the need to regularly perform *5 cumbersome and time-consuming maintenance procedures, such as optical axis adjustments required for transmitted light detectors using separate light emitters and detectors.

2, high concentration measurement accuracy, high reliability

Like the TDLS8000, the TDLS8100 uses the spectral area method to calculate the gas concentration from the area in the light absorption profile. Thus, stable measurements can be achieved even in environments with fluctuating air pressure and temperature, as well as in environments where other types of gases and large amounts of dust are present. Although the TDLS8100 is a probe-type instrument, due to the design of its optics, it is able to maintain a stable laser optical axis and path length (the transmission length of the laser through the measurement of the sample) over a long period of time.

Main target market

Oil and gas, petrochemical, chemical, electric power, steel, ceramics and other industries.

Apply

- Measure oxygen concentration in combustion heaters to improve safety and life cycle management.

- Measurement of CO concentration during combustion

TDLS8100  Passed IECEx explosion-proof standard certification. Applications for TIIS in Japan, FM in the United States, FM in Canada and other certifications are in progress.

Yokogawa laser gas analyzer

Yokogawa's laser gas analyzers use a method called tunable diode laser spectroscopy (TDLS) to detect gas concentrations. They provide superior real-time performance because they are mounted on the pipe and do not require a sampling system, so concentrations can be measured directly at high speed. They use the spectral area method, which calculates the gas concentration from the area in the light absorption profile, allowing stable concentration measurements even in environments where temperature and pressure fluctuations or other types of gas or large amounts of dust are present. Since its release in 2008, Yokogawa's laser gas analyzers have been widely used in challenging environments due to their high reliability and superior performance. Yokogawa offers two models: TDLS8000 and TDLS8100. Equipped with a separate light emitter and detector, the TDLS8000 is suitable for measuring the concentration of high temperature and high pressure gases, even in the presence of large amounts of dust. The TDLS8100 is a new model for measuring gas concentrations at flow rates in the range of 1 to 30 meters per second.

About OpreX

OpreX is a new integrated brand launched by Yokogawa Electric Corporation for its Industrial automation (IA) and control business products. The OpreX brand represents Yokogawa's excellence in technology and solutions that create value together with customers, encompassing the entire range of the company's IA products, services and solutions. The brand comprises the following five categories: OpreX Transformation, OpreX Control, OpreX Measurement, OpreX Execution and OpreX Life Cycle. The TDLS8100 probe tunable diode laser spectrometer belongs to the OpreX analyzer product family, which is calibrated according to the OpreX measurement class. The OpreX measurement category includes field equipment and systems for high-precision measurement, data collection and analysis.

With the OpreX brand, Yokogawa will provide integrated solutions that meet customers' specific needs and support them in transforming and growing their businesses.

*1: Components for connecting equipment to pipes, conduits, etc.

*2: The degree to which the same number of measurements match each other under the same measurement conditions.

*3: The deviation degree of the relationship between the input and output signal lines (measurement error range).

*4: Yokogawa's cost estimates for installing flanges and permanent and temporary scaffolding. Gas analyzer price not included.

*5: Required only after the probe is reconnected to the analyzer body (after calibration).