fann MACS II, User Manual, Page: 60 / 165

MACS II User Manual
101796668 Revision E 51
The pressure entered for calibration should be: 7000 psi for 0 to
10,000 psi tests; 17,000 psi for 10,000 to 20,000 psi tests; and
27,000 psi for 20,000 to 30,000 psi tests.
15. Install the calibration fixture in the calibration position at the front of the unit.
16. Properly align the guide height and bearing to the same height as the calibration pulley.
17. Hook the ball of calibration string to the magnedrive calibration pulley, and then lay
the other end of the string around the calibration fixture bearing guide.
18. Type the letter d on the keyboard. This will change the units for motor rotation from
revolution per minute to degrees per minute.
19. On the Operate Manually window, enter 36 in the Deg/min box, and then select CW to
begin clockwise rotation at 36 degrees per minute. Wait approximately 10 minutes for
the string to completely rotate around the magnedrive pulley.
20. When the rotation is completed, click on the rotating arrows (on the CW button) to
stop rotation of the magnedrive.
21. Manually erase 36 and enter 0.2 in the Deg/min box.
22. Click CW again to start rotating the motor and paddle clockwise at 0.2 deg/min.
23. Select Exit .
24. From Calibration menu, select Calibrate SGS . The Calibrate SGS window will
appear.