Communications: electrical – Continuously variable indicating – Combined
Patent
1998-02-02
1999-12-07
Wu, Daniel J.
Communications: electrical
Continuously variable indicating
Combined
340606, 340611, 340614, 340626, 7336103, G08B 1900
Patent
active
059991062
ABSTRACT:
Apparatus and methods for monitoring a characteristic of fluid flow through a fluid dispenser that permit adverse flow conditions to be monitored, analyzed and displayed to an operator. The monitor samples either the static or firing pressure a predetermined number of times and calculates an average static and firing pressure over the sampling period. The average pressure values are compared to high and low warning and alarm limits and warning and alarm error codes are produced as a function thereof. In addition, individual sampled values are compared to the high and low warning and alarm limits and pressure values exceeding the limits during a sampling period are counted. Warning and alarm error codes are produced as a function of the counted values exceeding predetermined count values. The monitor control system discriminates between alarm conditions requiring immediate remedial attention and warning conditions the progress of which may be tracked and remedial action taken prior to an alarm condition occurring. Each fluid dispenser has a fluid monitor connected to a remote operator control with a data communications network. Consequently, an operator may monitor all of the monitor controls from a remote location. The monitor provides diagnostics that provide suggestions to the operator of potential causes of the particular adverse flow condition detected. Further, the monitor provides a more reliable calibration method and a swivel mounting for a attaching a sensor to the dispensing unit.
REFERENCES:
patent: 3726711 (1973-04-01), Hogstrom
patent: 3764567 (1973-10-01), Maiocco et al.
patent: 4055844 (1977-10-01), Hornbostel, Jr.
patent: 4430886 (1984-02-01), Rood
patent: 4481503 (1984-11-01), Lehman et al.
patent: 4489311 (1984-12-01), Lang et al.
patent: 4494112 (1985-01-01), Streib
patent: 4495488 (1985-01-01), Streib
patent: 4662540 (1987-05-01), Schroter
patent: 4668948 (1987-05-01), Merkel
patent: 4788648 (1988-11-01), Ferreti et al.
patent: 4827430 (1989-05-01), Aid et al.
patent: 4866594 (1989-09-01), David et al.
patent: 4917296 (1990-04-01), Konieczynski
patent: 4951224 (1990-08-01), Hokynar
patent: 4972180 (1990-11-01), Akai et al.
patent: 5363093 (1994-11-01), Williams et al.
patent: 5446449 (1995-08-01), Lhomer et al.
patent: 5483596 (1996-01-01), Rosenow et al.
patent: 5504693 (1996-04-01), Elliott et al.
patent: 5592396 (1997-01-01), Tambini et al.
, Patent Abstracts of Japan, vol. 11, No. 139 (C-420) (2586) May 7, 1987 and JP, A, 61 278 373 (Nordson K.K.) Dec. 9, 1986.
M. Arnold, et al., Alarm Management in Batch Process Control, ISA Transactions, vol. 28, No. 3, 1989, Pittsburgh US pp. 33-40.
Nordson Corporation, Model NFS-1 Flow Sentry Control, Technical Publication p. 17-6-1, issued Sep. 1984.
European Search Report, Dated Nov. 2, 1998.
Nordson Corporation
Wu Daniel J.
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