Portable Laser Gas Analyser for Landfill CH4, NH3 and CO2 Monitoring
Nov 06 2017 Comments 0
Landfill Gas (LFG) is the product of microbiological decomposition of land-filled waste. The bacteria thrive under anaerobic conditions and turn complex organic compounds found in waste matter into primarily Methane and Carbon Dioxide, LFG is approximately 50-55% methane and 40-45% carbon dioxide.
The ETG 6900 P a portable Laser Gas Detection (LGD), based on Tunable Diode Laser Spectrometry (TDLS), provides a solution to many gas detection challenges in landfill emission monitoring and process control. This technology offers unique advantages like precise optical, contact-less measurements, excellent target gas selectivity and sub ppm-level detectivity.
The TDLS technology-enhanced for gas detection, where a 0.1 nm narrow bandwidth diode laser beam is scanned across an absorption band of the target gas, performing a high-resolution near-infrared absorption measurement. Electronic lock-in technology allows separating the gas absorption information from electro-optical system information, leading to a detection method eliminating the need for a physical reference channel.and offering continuous sensor status monitoring. The ETG 6900 P thus present a clear alternative to current sub-optimal detection solutions and combine precise with high target gas selectivity, calibration-free operation, low-cost-of-ownership and easy use by the customer.
The ETG 6900 P analyser is powered by Li- ion battery and can be used without AC power supply. It can be used for measurement of the concentration of CH4 ,CO2 ,NH3 in sample gases.
Main features are : Very fast CH4 ,CO2 ,NH3 detection,Sample pump inside, Portable in robust case, Zero & Span Calibration, Continuous sensor status monitoring, Low cost-of-ownership, Touch Screen monitor, Ethernet and USB Remoting, Modbus, Profibus, Ethernet output, Arm processor based, Digital Input/output, Some Applications are; Natural gas networks, Landfill surface emissions, Momentary leaks of methane.
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