Fresenius Medical Care DIASAFE 2008 K, Руководство оператора

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Chapter 1—Overview
2008K Hemodialysis Machine Operator’s Manual Rev P 35
The Level Detector Module
The Level Detector module is used to monitor the level of fluid in the venous drip chamber.
The venous drip chamber is mounted inside its holder and the blood tubing leading back to
the patient is threaded through the venous line clamp below it. An ultrasonic device inside
the chamber holder monitors the drip chamber for the presence of air. If the level of blood in
the chamber is too low and air is detected, the machine alarms, the blood pumps stops, and
the clamp occludes the venous blood tubing.
An optical sensor located below the occlusion clamp recognizes whether or not blood, an
opaque fluid, is detected in the venous line. When the dialysate supply lines are on the shunt,
and the shunt door is closed, and blood is not sensed, the audible alarm is suppressed entirely.
Also located on the front of the module is a pressure port. The small monitor line from the
drip chamber is connected to the transducer port. The pressure of the venous side of the
blood circuit is read by the transducer mounted on the inside of the module, and the pressure
is displayed in the “Home” screen.
Figure 12 – The Level Detector Module
Level Detector
Sensor
Venous Drip
Chamber
Holder
Optical Detector
Door (Rotate
Clockwise to Open)
Up/Down
Level Adjust
Venous
Clamp
Optical
Detector
Venous
Pressure Port
Door
Latch