The switch tuning forks vibrate at their natural frequency; when they contact a liquid, their vibration frequency changes and triggers the switch output. The switches are suitable for use in tanks, ...
Fig. 1 The simulation of stress distribution in QEPAS: (a) standard QTF, (b) four-prong QTF. In 2002, Tittel et al. proposed a gas sensing technology named quartz-enhanced photoacoustic spectroscopy ...
A new publication from Opto-Electronic Advances, 10.29026/oea.2024.230230 discusses a high-sensitivity LITES-based gas sensor empowered by a novel quartz tuning fork and a multi-pass cell with dense ...
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