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News Release

Launch of a Laser Gas Analyzer for EGCS to Strengthen the Ship Systems Business


Fuji Electric Co., Ltd. (headquartered in Tokyo, Japan; led by President Michihiro Kitazawa) is pleased to announce the launch of a laser gas analyzer for EGCS to strengthen the ship systems business.

1. Background
In the aim of reducing emissions of sulfur oxides (SOx), a substance responsible for air pollution, the International Maritime Organization (IMO) has set an upper limit of 0.5% on the sulfur content of ship fuel oil in all sea areas except designated sea areas*1 to be achieved by 2020 (current limit: 3.5%). This regulation will apply to all ships, existing and newly constructed ones. Once this regulation is strengthened, ship owners will have to switch to fuels with lower sulfur content or install exhaust gas purifiers (SOx scrubbers).*2 In addition, ships equipped with SOx scrubbers will be required to continuously monitor the ratio of sulfur dioxide (SO2) to carbon dioxide (CO2) gas content as an indicator of the exhaust gas purification performance.
Recently, Fuji Electric launched the world's smallest “laser gas analyzer for EGCS” as such an exhaust gas monitoring system. It also launched an Exhaust Gas Cleaning System (EGCS) for ships in 2018. The company will further strengthen its ship systems business by applying this product to its own EGCS and by expanding sales of this analyzer to other scrubber manufacturers.

*1 The seas of North America, the Caribbean, the North Sea, the Baltic Sea and others. Regulated at 0.1% from 2015.
*2 Equipment that mixes exhaust gas with seawater and reduces the sulfur oxides content of the gas.

2. Product Features

1)The world's smallest and most flexible configuration

Conventional infrared gas analyzers consist of 4units; a sampling device to suck exhaust gas from the stack, a heating tube, and the sampling equipment (with a preprocessing function) for removing dust and moisture from the exhaust gas, control equipment for supplying power and communicating to each piece of equipment, and a gas analyzer for measuring the SO2 and CO2 concentration in the exhaust gas. Therefore, a large amount of installation space was required to store them in the one big cabinet.
This product integrates the preprocessing function into the sampling section and uses a three-unit structure design consisting of a detector, a controller, and a sampler. The installed location is flexible and each unit can be placed on the wall or floor. So it does not need to be stored in paneling, thereby achieving a 90% reduction in volume compared to our products, as well as the world's smallest size. All of this has enabled easy installation on existing ships (toward retrofit demand).

2)Using laser technology to reduce maintenance frequency greatly

The laser method uses laser elements and photodiodes to measure the SO2 and CO2 content at the same time. Compared with the infrared method, the laser method can significantly reduce signal noise. Therefore, the calibration work has been reduced to once a year (while the infrared method requires weekly calibration). Besides it has low amount of spare-parts due to reduce running costs by 50% or less than the infrared method.
The ship certificate requires the high measurement accuracy and environmental resistance (to vibration, high temperatures, etc.) for application in ships, this achievement was difficult in the development stage.However, Fuji Electric ensured the level of measurement accuracy required for certification by utilizing the technical capabilities such as mechanical design and signal processing technology that have been accumulated in domestic incinerator plants, steel and iron plant, and a variety of other fields. Finally, it results that we are able to release Japan’s first commercial laser gas analyzer for ship scrubbers.

3. Main Applications

Bulkers, tankers, container-ships, car carriers, etc.

4. Product Specifications
Product specifications
Measurement principle and method Wavelength non-dispersive laser sampling system
Measurement components and range SO2: 0 - 300 ppm CO2: 0 - 10 vol%
(W × H × D)mm
Sampler: 400(W)×300(H)×323.4 (D) mm
Detector: 330(W)×880(H)×255(D)mm
Controller box: 500(W)×400(H)×166 (D) mm
Mass Detector: Approx. 30 kg
Sampler: Approx. 18 kg
Controller box: Approx. 20 kg
Performance Accuracy: ±2% of the reading, or 0.3% FS, less than whichever is greater
Accuracy: 2.5 times the standard deviation of 10 repetitions ±1% FS or less
Drift: Up to ±2.0 % FS/6 months
Calibration cycle: Once a year
Standard certification Ship Type Certification and EGCS Conformity Assessment
NK (certified), DNV/GL (certified)
5. Product Inquiries

Business Operation Department II, Automation Division, Power Systems Industry Business Group, Fuji Electric Co., Ltd.
  ☎ +81-3-5435-7066

Inquiry Form:
(Select the Marine Environment Protection)

【References】Configuration of Exhaust Gas Cleaning Systems for ships


*Information conveyed in this release (product features, prices, inquiry information, etc.) is accurate as of the date of this announcement and is subject to change without prior notice.

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