Spectroscopic apparatus with balanced dual detectors
US4057734A · kind A · utility
10Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1975 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Aug 28, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/1626
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrometer having two photoelectric channels the outputs of which are compared in order to measure gas or liquid concentrations, and means for automatically balancing the photoelectric channels immediately prior to each successive measurement, said means including a reference source of radiation which is utilized for balancing both photoelectric channels, so that when a measurement of the gas or liquid is being made, both photoelectric channels as nearly as possible are effectively balanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.