Accession Number : ADD001169

Title :   Light Responsive Bathyirradiometer.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Pearl,L R ; Mesecar,R S

Report Date : 17 Dec 1973

Pagination or Media Count : 11

Abstract : The patent application describes a bathyirradiometer that is employed to measure the light levels in situ. The bathyirradiometer includes a photomultiplier that detects light that is received at its light input. A high voltage power supply supplies power to a voltage divider the output of which is connected to the dynodes of the photomultiplier tube. The voltage level of the output of the high voltage power supply is selected by a programmable high voltage regulator. The output of the photomultiplier tube is applied to the input of an automatic range device. One output of the automatic range device is applied to the programmable high voltage range detector to select the voltage to be applied across the dynodes of the photomultiplier tube. The other output of the automatic range device is applied to one input of a scanner to indicate the particular voltage range of oferation. The range selection is determined by the automatic range device to achieve optimum performance of the photomultiplier tube when receiving light in predetermined light level ranges.

Descriptors :   *Oceanographic equipment, Patents, Light, Level(Quantity), Measuring instruments

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE