TT100 In-Line Viscometer Installation, Operation, Maintenance and Service Instructions
P/N M/97-520 3-15
5. Perform the following steps to allow Digital Volt Meter (DVM)
connections to the torque sensor printed circuit board:
a. Cut two lengths of #18 - 24 AWG wire 6 inches long.
b. Strip approximately 1/8 inch of insulation off each end.
c. Connect one wire to J1-Pin 1.
d. Connect the second wire to J1-Pin 2.
6. Connect a range jumper wire between J2-Pin 1 and J2-Pin 3
(HIGH range).
7. Turn power ON to the torque sensor electronics enclosure.
NOTE: To ensure proper span calibration, make sure the calibration bar
installed as shown in Figure 3-7.
8. Set the digital volt meter (DVM) to the 0 - 20.00 mA scale.
9. Connect the DVM positive lead to the wire on J1-Pin 1.
10. Connect the DVM negative lead to the wire on J1-Pin 2.
11. Observe the DVM reading. Adjust R18 for 4.00 mA.
12. Move the range jumper wire between J2-Pin 1 and J2-Pin 2
(LOW range).
13. Observe the DVM reading. It should indicate 4.00 mA.
14. Move the range jumper wire between J2-Pin 1 and J2-Pin 3
(HIGH range).
NOTE: If 4.00 ± .02 mA is not displayed on the DVM after switching the
range jumpers, then perform the Fine Zero Voltage Calibration procedure.
CAUTION
Do not apply extra torque beyond that which is provided by the calibration
bar. Damage to the torsion element will result.
15. Install the heaviest of the two calibration bars that came with your
viscometer, on the stator mounting screws, parallel to the work
surface, and in the direction to which torque will be applied, as
shown in Figure 3-7.
NOTE: Some dual range viscometers may be supplied with one calibration
bar. If so, only one calibration bar will be shown on the viscometer
specification sheet.
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