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PRESSURE
CALIBRATION FOR 200
ML PUSHROD 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 200 ml Pushrod 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.
A
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 Sv/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 freguency is 100 KHz (10us period
+0.Sus).
o
Refill the syringe and press [200 psi] to calibrate the unit for
delivery at 200 psi. The injection will be enabled during these
procedures.
O
While viewing the gage, use the [ ©] and [ © ] keys to obtain the
200 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 200 psi , press the [Set Pressure] key.
Refill the syringe and repeat Steps 5 and 6 for [100 psi}.
Press the [Exit] key. The CT 9000 will prompt you to return position 1 of
SWI back to the "on" position.
Once you have completed calibration for the 200 ml Pushrod syringe,
continue to the next calibration procedure, "Pressure Calibration for 100
ml Pushrod Syringe".
800961-C
Nov. 2000
5-11
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