Terumo BCT Trima Accel, Руководство по обслуживанию

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The control CCA sends a digital clock signal to the safety CCA, which converts that to an analog
ultrasonic signal. The “send” side of the AC detector transmits this signal through the tubing to the
“receive” side of the detector. The signal transmits through fluid but does not transmit through air. The
listen signal is received by the safety CCA, and the safety CCA sends this outcome (either fluid or no
fluid) to the control CCA for normal awareness purposes.
RBC Detector
The RBC detector is used to detect RBC contamination in the platelet line, detect the tubing set type,
and detect gross differences between predicted and collected platelet products.
Figure 2-13: RBC detector location (front)
The RBC detector is mounted in a small CCA under the front panel. It uses green and red LEDs to
perform the following tasks:
•
The RBC detector measures the shade or color of the collected product to check for RBC
contamination (RBC spillover). If RBC contamination is present in the platelet line, the system
generates an alarm.
• The RBC detector detects the type of tubing set that is loaded by measuring the light reflected from
the stamp on the back of the cassette. If the tubing set cannot be identified, the system generates an
alert.
• The RBC detector detects gross differences between the predicted platelet collection and the actual
collected platelet product. If a gross difference is detected, the system generates a Verify Platelet
Product message at the end of the procedure.
System Description
2-14 Trima Accel
®
Automated Blood Collection System • Service Manual