The detection and measurement of gas concentrations using the characteristic optical
absorption of the gas species is important for both understanding and monitoring a variety of …

Laser absorption spectroscopy (LAS) is a promising diagnostic method capable of providing
high-bandwidth, species-specific sensing, and highly quantitative measurements. This …

We present a sensor for gas detection utilising an integrating sphere and interband cascade
laser for tunable diode laser absorption spectroscopy (TDLAS). Measurements were made …

Based on the research of the traditional empirical mode decomposition (EMD) method, we
proposed a modified EMD algorithm for the detected signal processing in tunable diode …

Monitoring of natural gas (NG) pipelines is an important task for economical/safety
operation, loss prevention and environmental protection. Timely and reliable leak detection …

Tunable diode laser absorption spectroscopy technology (TDLAS) has been widely applied
in gaseous component analysis based on gas molecular absorption spectroscopy. When …

Accurately quantifying unsteady methane venting from key oil and gas sector sources such
as storage tanks and well casing vents is a critical challenge. Recently, we presented an …

High-resolution absorption spectroscopy is a promising method for non-invasive process
monitoring, but the computational effort required to evaluate the data can be prohibitive in …

New designs for gas cells are presented that incorporate transmissive or reflective optical
diffusers. These components offer simple alignment and can disrupt the formation of optical …

Nondispersive infrared (NDIR) sensors have been widely used in measuring gas
concentration in process industry. However, the inhomogeneous gas diffusion in the gas …