The implementation, performance validation, and testing of a gas-leak optical sensor based on mid-IR quartz-enhanced photoacoustic (QEPAS) spectroscopic technique is reported.

2018-2-13Highly sensitive gas leak detector based on a quartz-enhanced photoacoustic SF6 sensor ANGELO SAMPAOLO,1,2 PIETRO PATIMISCO,1,2 MARILENA GIGLIO,1 LEONARDO CHIECO,3 GAETANO SCAMARCIO,1 FRANK K. TITTEL,2 AND VINCENZO SPAGNOLO1,2,* 1Dipartimento Interateneo di Fisica, Università e Politecnico di Bari, CNR-IFN UOS BARI, Via Amendola 173, Bari,

Highly Sensitive and Precise Analysis of SF6 Decomposition Component CO by Multi-comb Optical-feedback Cavity Enhanced Absorption Spectroscopy with a 2.3 μm Diode Laser July 2019 Scientific

The system’s core components are: a vacuum test chamber with diffusion accelerator, a highly sensitive leak measuring system as well as a vacuum pump for evacuation of the test chamber. State-of-the-art control technology and a 17“ TFT screen make system operation easy and comfortable.

A compact ppb-level SO2 photoacoustic sensor was developed for the application of SF6 decomposition detection in electric power systems. The selection of the SO2 target spectrum is discussed in detail in the infrared (IR) and ultraviolet (UV) spectral regions. Based on the result of the spectrum selection, a small-sized UV-band diode-pumped solid-state laser (DPSSL) emitting at 303.6 nm with

The camera is highly sensitive due to the sensitivity of Cooled QWIP detector when its temperature resolution reaches 0.025&C and leak detection sensitivity reached 0.0001 ml/s. A small temperature difference, the tiny leakage both can be detected and

A novel laser based photoacoustic spectrometer (PA) has been developed for in-situ detection of SF6 leaks in very low low concentrations (pptv). This newly developed SF6 detection device utilizes a high quality factor resonant photoacoustic cell and continuous wave (CW) line

An optical sensor for highly sensitive detection of carbon monoxide (CO) in sulfur hexafluoride (SF6) was demonstrated by using the quartz-enhanced photoacoustic spectroscopy technique. A spectrophone composed of a custom 8 kHz T-shaped quartz tuning fork with grooved prongs and a pair of resonator tubes, to amplify the laser-induced acoustic

By quantifying the leakage rates of carbon dioxide (CO2), methane (CH4), and hydrogen (H2) simultaneously with SF6 in the test chamber, their effective diffusivity ratios of approximately 1.60, 1

The implementation, performance validation, and testing of a gas-leak optical sensor based on mid-IR quartz-enhanced photoacoustic (QEPAS) spectroscopic technique is reported. A QEPAS sensor was integrated in a vacuum-sealed test station for mechatronic components. The laser source for the sensor is a quantum cascade laser emitting at 10.56 #x00B5;m, resonant with a strong absorption band of