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CT 9000 ® ADV Digital Injection System
PRESSURE CALIBRATION FOR ALL SYRINGE FACE PLATES
Use the following procedures to properly calibrate the CT 9000 Digital
Injection System for each syringe size face plate.
NOTE:
During the calibration procedure the console will display the syringe size
PRESSURE
CALIBRATION FOR 200
ML SYRINGE USE WITH
125 ML COMPENSATION
face plates that have been "enabled" for your injector. See Figure 5-3.
You must calibrate the system for all enabled syringe size face plates
using the following procedures.
If you fail to calibrate for all enabled
syringe size face plates, the system will not function and the console will
display Fault #29: "Pressure is not calibrated".
NOTE:
Prior to starting the Pressure Calibration procedure, the Position Cali-
bration must be performed.
Refer to Figure 5-3.
With unit still in the Calibration Mode, install a 200 ml Pressure Plate
Assembly onto the powerhead. Fill the syringe with tap water and install
the Pressure Gage Assembly (P/N 600867). Remove all air from the
syringe and tubing. Turn the Pressure Gage valve approximately 1/4 of a
turn from the closed position to simulate a # 8 butterfly needle.
Press [Calibrate Pressure].
Connect the oscilloscope ground to the anode of D8 and the probe to the
cathode of D8 located on the Mother board. Set oscilloscope to 5v/div.,
2us/div., positive trigger.
Press [100 psi] and adjust R80 located on the Mother board (R27 on Rev
G and earlier boards) so that the servo frequency is 100 KHz (10us period
+0.5us).
©
Refill the syringe and press [300 psi] to calibrate the unit for
delivery at 300 psi. The injection will be enabled during these
procedures.
の
While viewing the gage, use the [©] and [ © ] keys to obtain the
300 psi pressure. If this pressure cannot be achieved, slightly close
the valve to further restrict fluid flow. Repeat this step if the
injection is completed before 300 psi can be reached.
Once the pressure is stabilized at 300 psi, press the [Set Pressure] key.
Refill the syringe and repeat Steps 5 and 6 for [200 psi] and [100 psi].
Continued on next even page...
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