Sulfur detecting apparatus comprising holmium, and erbium filter

Details Sulfur detecting apparatus comprising holmium, and erbium filter Sulfur detecting apparatus comprising holmium, and erbium filter

1977-02-07

1978-07-11

McGraw, Vincent P.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

350313, 252300, G01N 348, G02B 522, G02B 520

Patent

active

040998835

ABSTRACT:
An improvement in sulfur detecting apparatus is described wherein a filter system provides a signal path for light passing to detecting means, which signal path contains holmium and erbium, in quantities selected so that the optical transmission in the signal path is preponderantly in a wavelength interval 5 nm. wide and including the wavelength 374 nm. Embodiments of the invention additionally feature a calibration path for light passing to the light detecting means, containing samarium and holmium, the quantities of holmium and samarium being selected so that the optical transmission in the calibration path is preponderantly in a wavelenth interval 10 nm. wide and including the wavelength 374, the transmission being greater at wavelengths of 372 nm. and 378 nm. than at 374 nm. Further features includes a balanced transmission in the signal and calibration paths.

REFERENCES:
patent: 3489498 (1970-01-01), Brody et al.
patent: 3877819 (1975-04-01), Haas

Affiliated with

Also associated with

Rating

Sulfur detecting apparatus comprising holmium, and erbium filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sulfur detecting apparatus comprising holmium, and erbium filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sulfur detecting apparatus comprising holmium, and erbium filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-259474