A general term for describing a combination of spectral apparatus with one or more detectors to measure the intensity of one or more spectral bands.
See also: sequential spectrometer, simultaneous spectrometer, multiplex spectrometer, filter spectrometer
PAC, 1995, 67, 1725. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-IX. Instrumentation for the spectral dispersion and isolation of optical radiation (IUPAC Recommendations 1995)' on page 1729 (https://doi.org/10.1351/pac199567101725)