Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Sensed condition is operating time and control is operation...
Patent
1990-10-22
1992-09-08
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Sensed condition is operating time and control is operation...
422 26, 422295, G05B 1900
Patent
active
051456478
ABSTRACT:
The pressurization period of an autoclave is controlled by an oscillator which provides an output to the autoclave control unit. The control unit has a microprocessor with its own clock. The number of times that a portion of the program is carried out by the microprocessor during the pressurization period of the autoclave, is counted into a register to decrease a separately established count in the register. This separately established count is representative of the correct operating time of the pressurization period. If, at the end of the pressurization period, the count in the register exceeds zero by more than an allowable error, a fault indication is produced on a display and the autoclave door is maintained locked so as to prevent access to articles in the autoclave.
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Smiths Industries Public Limited Co.
Thornton Krisanne M.
Warden Robert J.
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