Measuring and testing – Measuring vessel
Patent
1978-06-09
1979-09-04
Swisher, S. Clement
Measuring and testing
Measuring vessel
G01N 112
Patent
active
041663926
ABSTRACT:
An automatic water/sewer sampler, is a totally immersible, rechargeable battery powered, and of rustproof stainless and aluminum construction. It is constructed so that it may be suspended under water at a raw water inlet or from a ladder rung to hang in a sanitary sewer flow. The bottom fill feature permits taking a sample in a flow level of six inches or less. It is not affected by atmospheric pressure. The samples are collected in vacuum flasks, surrounded by insulation material to protect the biological and temperature condition of the sample until the device is returned to the Department of Public Works laboratory, for analysis. When installed in the field, the device will take a (500) milliliter sample each hour for eight hours, and the knife edge sample flask gate valve will open to accept up to half inch lumps of particulate matter and still shear through to seat and seal. The sampler also features a `reverse cycle` in which the device may be filled with liquid chemicals or trace dyes in the laboratory to be time released at the field site.
REFERENCES:
patent: 2388548 (1945-11-01), Jurs, Jr.
patent: 3924471 (1975-12-01), Singer
patent: 4089209 (1978-05-01), Grana et al.
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