Welch Allyn PROPAQ CS Service Manual page 123

Vital signs monitor
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Service Manual
NIBP PNEUMATICS AFTER MEASUREMENT COMPLETE
CUFF
TO DAP A-D
CONVERTER
PRIMARY
TRANSDUCER
SERVO
(LINEAR)
VALVE
CLOSED*
DUMP
VALVE
OPEN
SECONDARY
TRANSDUCER
TO DCP A-D
CONVERTER
ATMOSPHERIC PRESSURE
INCREASING PRESSURE (INFLATION)
DECREASING PRESSURE (DEFLATION)
PRESSURIZED (TARGET REACHED)
BLEED
VALVE
PUMP
OPEN
OFF
* VALVE IS INITIALLY CLOSED,
BUT OPENS AFTER INITIAL DUMPING
BEGINS BY DUMP VALVE. THIS CHECKS
INTEGRITY OF DUMP VALVE'S ABILITY TO
OPEN.
0696-66
Technical overview
119

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