Terumo CDI 550, Operator'S Manual

Page: 58 / 173

calibrating sensors chapter 5 5-5 5-4
10 Using sterile technique, fully loosen the large, blue top venting luer cap
on the sensor(s).
The cap will stay attached to the top of the sensor, allowing venting of the buffer
solution without compromising the sterility.
The filter/sparger assembly will prevent the buffer solution from leaking out of
the sensor.
11 Place the cable-head assembly in the calibrator pocket, pushing it down
until it stops and locks into place.
The cable-head is connected properly if it can resist a gentle tug. This ensures
a good connection between the sensor and calibrator.
Note:
The small dots over the gas bottle indicators will turn green when a sensor/
cable-head has been engaged in that sensor/cable-head pocket.
12 To calibrate a second sensor, repeat steps 4-11 for that sensor.
Note: If only one sensor is being calibrated, the calibrator will automatically detect the
port being used and shut off flow to the unused port.
13 Press the √ key on the monitor to initiate calibration.
If no errors occur, the calibration proceeds and you see a screen like the one
shown in the next figure.
If any error messages appear, follow the instructions on the screen, or consult
Chapter 9, “Troubleshooting” to resolve the problem.
Note: A small amount of calibration fluid may be initially displaced from the sensor
through the top fitting. This loss of fluid is normal and does not affect calibration ac-
curacy.
Note:
In normal calibration, you hear gas bubbling through each sensor.
5400507
Put the cable-head assembly
into the calibrator, pushing
down until it locks into place.