OPTICAL ABSORPTION METER.
Abstract
The report describes the second-generation absorption meter (a-meter). The system uses two self-powered pulsed light sources and two detectors. One source is equidistant from the two detectors and provides an in-situ calibration method. The other source is located about one-third as far from one detector as from the other detector. The detectors and light sources operate at ambient pressure, in contact with the water. Fifty-ohm coaxial line is used to transmit the signals to the deck. A solid-state circuit on deck provides measured values of a (the absorption coefficient) directly on a digital voltmeter. A signal is also provided with which to drive a chart recorder. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1969
- Accession Number
- AD0689233
Entities
People
- G. D. Gilbert
- G. P. Sorenson
- R. C. Honey
- Ronald E. Meyers
Organizations
- SRI International