DESIGN STUDY TO DEVELOP INSTRUMENTATION FOR FIELD EVALUATION OF CHEMICAL AGENTS
Abstract
The report describes the work on a flash camera and an oxime- electrochemical cell. The evaluation of the breadboard model flash camera was completed and detailed plans were made for completing a laboratory model instrument. The complete system is referred to as the flash-television particle counter. The camera was arranged to view a glass slide on which particles had been deposited. With the camera set for 10x magnification, a particle of 4 microns in diameter produced an image that intercepted about two television lines. To measure the depth of field, the slide was moved along the optical axis until the focus-detection circuit turned off the counting circuits. Work on the multiple gel-cell proceeded to the point of designing a segmented wheel cell. The wheel cell will be ratchet-driven on about a one-second cycle through several zones of processing. First, a reciprocating roller will apply a thin coating of methyl cellulose-oxime gel. Second, one segment of the wheel will advance by the ratchet drive to the sampling position where the inlet air will impinge upon the fresh gel. Third, the segment will advance to a stagnant zone for measurement during the time of response of the reaction. Fourth, the segment will advance into a dip tank for washing with a reciprocating sponge or brush.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 08, 1964
- Accession Number
- AD0600982
Entities
People
- Alvin N. Bird Jr.
- Norman L. Francis
Organizations
- Southern Research