Preferred Label : ultrasonic detector;
Detailed label : ultrasonic detector in gas chromatography;
IUPAC definition : Sound is generated in a reference cell and a measuring cell. An eluted component passing
through the measuring cell changes the velocity of sound in the cell. This change
is detected by a phase shift of acoustic signals between the two cells. This detector
is usually employed for inorganic gases in the region where thermal conductivity detectors
are not sufficiently sensitive. The detection threshold is of the order of 0.1 ppmv.
The linear dynamic range is of the order of 10E3.;
Origin ID : U06549;
See also
Sound is generated in a reference cell and a measuring cell. An eluted component passing
through the measuring cell changes the velocity of sound in the cell. This change
is detected by a phase shift of acoustic signals between the two cells. This detector
is usually employed for inorganic gases in the region where thermal conductivity detectors
are not sufficiently sensitive. The detection threshold is of the order of 0.1 ppmv.
The linear dynamic range is of the order of 10E3.
