Flow measurement system

Details Flow measurement system Flow measurement system

1987-05-11

1989-05-02

Lall, Parshotam S.

Boots, shoes, and leggings

36441307, 340606, 73195, 128637, G01F 15075, G01P 520

Patent

active

048274305

ABSTRACT:
A flow rate measurement system and method suitable for monitoring filtrate flow in a hemodialysis apparatus, provides a pair of flow meters in series at the input of a dialyzer for producing electrical signals indicative of dialysate flow rate and a pair of flow meters in series at the output of the dialyzer for producing electrical signals indicative of dialysate plus filtrate flow rate. A computer receives the flow rate signals and is programmed to calibrate each flow meter during a calibration phase to correct for any variations in each pair to thereby produce corrective scale factors. During an operational phase of the apparatus, the program monitors the flow meters and provides an alarm if any changes between the readings of either of the pairs of flow meters occurs.

REFERENCES:
patent: 4148314 (1979-04-01), Yin
patent: 4206504 (1980-06-01), Frey
patent: 4538221 (1985-08-01), Crain et al.
patent: 4562552 (1985-12-01), Miyaoka et al.
patent: 4569012 (1986-02-01), Sekozawa et al.
patent: 4593365 (1986-06-01), Haley, Jr. et al.
patent: 4708021 (1987-11-01), Braun et al.

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