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PRESSURE
CALIBRATION FOR 30-50
ML HAND-HELD
SYRINGE
NOTE:
Prior to starting the Pressure Calibration procedure, the Position Cali-
bration must be performed.
Refer to Figure 5-4.
E
With unit still in the Calibration Mode, install a 30-50 ml Hand-Held
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 approxi-
mately 1/4 of a turn from the closed position to simulate a # 8 butterfly
needle.
B
Press [Calibrate Pressure].
NOTE:
Only perform steps 3 and 4 below if you have not already completed these
steps during a previous syringe calibration.
а
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.
Я
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
+0.5и3).
0
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 necessary.
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].
Press the [Exit] key. The CT 9000 will prompt you to return position 1 of
SW1 back to the "on" position.
Once you have completed calibration for each syringe size face plate,
calibration of the unit is complete. The unit will display the Protocol
Memory screen. Remove the oscilloscope probes and replace the Power
Pack cabinet cover.
800961-C Nov. 2000
5-13
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