Measuring and testing – Volume or rate of flow – Element
Patent
1982-09-30
1984-12-04
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
Element
73201, G01F 1514
Patent
active
044856725
ABSTRACT:
A tamper-proof cover for a fluid flow monitor comprises a guard portion at least partly disposed about the monitor when the cover sealingly engages the fluid system in which the monitor is disposed. Preferably, the cover comprises an assembly including a plate fixed to the cover of the flow monitor to seal the interior of the device. Access to the monitor and alarm or actuator circuits disposed therein is impeded by the assembly so long as the cover seals the fluid system, and access thereto requires breaching the fluid system by removing the cover.
REFERENCES:
patent: 1631472 (1927-06-01), Clark
patent: 2826916 (1958-03-01), Lang
patent: 2844962 (1958-07-01), Resko et al.
patent: 3308664 (1967-03-01), Kullmann
Ruehl Charles A.
Universal Filters, Inc.
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