detector

in chromatography
https://doi.org/10.1351/goldbook.09909
Sensor that responds to components in the effluent.
Examples: Ultraviolet spectrometer, mass spectrometer, flame ionization detector
Source:
PAC, 2017, 90, 181. (Terminology of separation methods (IUPAC Recommendations 2017)) on page 201 [Terms] [Paper]