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產(chǎn)品名稱：LGA-4000 In-Situ Gas Analysis System原位氣體分析系統(tǒng)
產(chǎn)品型號(hào)：LGA-4000 In-Situ Gas Analysis System原位氣體分析系統(tǒng)
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LGA-4000 In-Situ Gas Analysis System原位氣體分析系統(tǒng) 可調(diào)諧二極管激光吸收光譜（TDLAS）適用于氧氣，一氧化碳，二氧化碳，甲烷，氨，氯化氫，和H2Ov分析

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LGA-4000 In-Situ Gas Analysis System原位氣體分析系統(tǒng)
可調(diào)諧二極管激光吸收光譜（TDLAS）適用于氧氣，一氧化碳，二氧化碳，甲烷，氨，氯化氫，和H2Ov分析

Industrial Products


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Model LGA-4000 In-Situ Gas Analysis System

Using Tunable Diode Laser Absorption Spectroscopy (TDLAS)

The LGA-4000 is comprised of a laser transmitter, receiver with electronic interface, and optional central processing unit. The transmitter and receiver are installed directly opposite one another on the process pipe / duct work. The transmitter launches a laser beam with a selected wavelength across the diameter of the pipe to the receiver unit.

The resulting electrical signal is then sent to the electronic interface or central processing unit.

TDLAS Advantages & Benefits

Provides immediate response to process changes
Eliminates sample handling cost and maintenance issues
Can be applied for O2, CO, CO2, CH4, NH3, HCL, and H2Ov Analysis
Eliminates cross interferences from background gases and dust, significantly improving measurement accuracy

TDLAS Theory of Operation:
Gas molecules absorb energy at specific wavelengths in the electromagnetic spectrum. At wavelengths slightly different than these absorption lines, there is essentially no absorption.

By transmitting a beam of light through a sample gas mixture containing the compound of interest, and tuning the beam's wavelength to one of the target gas's absorption lines and then measuring the absorption of that beam, we can monitor the concentration of the gas of interest over the beam's path length.

The laser's fast tuning capability is used to quickly and repeatedly scan the wavelength across the selected gas absorption line. For O2, the absorption line is 760 nanometers.

During the scanning process the portion of emitted laser power that is passed through the sample gas is measured by a photodetector. When the wavelength is tuned to be off of the absorption line, the transmitted power is higher than when it is on the line.

By measuring the relative amplitudes of the off-line to on-line transmission, the LGA-4000 is able to provide an accurate and highly sensitive analysis of the gas of interest.

Application Areas:

Steel Industry (Blast Furnace, Coke Ovens, Converter Coal Gas, etc)
Petrochemical (FCC Catalyst Regeneration, SRU Tail Gas Treating Unit, etc)
Power Plants (Coal & Heavy-Oil Fired Boilers, Baghouse, Economizer, etc)
Waste-to-Energy (Syngas) Production; Waste Incineration
Cement & Glass Industries; Ammonia / Urea Plants

Relevant Application Bulletins

- Applying the LGA-3500/LGA-4000 in the Steel industry
- Applying the LGA-3500/LGA-4000 in the Petrochemical industry
- Applying the LGA-4000 - Ammonia Slip Monitoring

Moisture version
- Trace moisture analysis in chlorine alkali, toluene diisocyanate (TDI), and polyurethane industries
- Trace moisture analysis in electron dichloride (EDC), carbon tetrachloride, and MCB in PVC and MDI industries

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產(chǎn)品名稱：LGA-4000 In-Situ Gas Analysis System原位氣體分析系統(tǒng)