rev. 08.15.2006.
7-46
validated as the initial release torque and at the end of the rotation the chuck opens, then the container is unclamped
for operator removal.
7.1.16. Topload measurements
One of the most forgotten questions regarding to torque testing is the effect of the topload force on the cap. There
are thread/closure designs where the removal/applied torque is highly affected by the force pushing down on the cap.
We can upgrade the ST-Lab with the topload option, and let you run torque measurements where the topload force is
kept on the same level, providing accurate topload independent readouts. We can also sell you measurement
methods, checking the thread friction torque at different topload force levels. Although these tests are mainly useful
for closure designers, it is also a good idea to check a cap design with a topload equipped torque tester before buying
thousands/millions of them. The topload option is also a must to properly test child resistant caps, for example the
Reverse Ratchet torque, and the shelling force. It is also useful to determine the “pull-apart” force, or the maximal
topload force of a container.
7.2. Other Options list
7.2.1. 360°/720° Degree Test Mechanism
This option measures the highest release torque sensed during a full 360-degree turn of the closure. In
some types of “tamper evident” or “child resistant” closures, the immediate release torque is not always the
highest torque reached in the complete closure removal process. If you have purchased this option refer to the
Appendix A in this manual for the table adjustment procedure of your 360° Mechanism.
7.2.2. Metric/US Measurement
This arrangement provides the option of displaying all torque measurements in metric Newton-Meters, in place of
inch-pound units or other units. If chosen, this option will be a selection in the calibration menu. The unit system of the
torque tester is selectable, on customer request we also provide other settings than the one has been already
implemented. The list of measurement units:
0: ozfin
1: lbfin
2: lbfft
3: kgfcm
4: kgfm
5: Ncm
6: dNm
7: Nm
7.2.3. RS-232 Interface
This option provides a cable and RS232 serial port (with RJ-11 connector) on the back of the Sure Torque
ST-LAB control box, to interface to a serial port on a customer’s host computer or printer. All test data
generated on the Sure Torque ST-LAB are available for output to a customer’s printer or PC. This feature
available with the Sure Torque Data acquisition package (with real-time torque monitoring), and it feeds all
collected torque values into the customer’s PC for storage, later analysis or printout.
7.2.4. Real Time Clock (RS-232 serial port required)
A data collection aid to provide time and date readout on any torque test data downloaded to a customer’s
computer or printer. With this option installed, the Sure Torque ST-LAB automatically feeds time and date
signals to the customer’s PC or printer, identifying the time and date of each test. With the possibility of a
house computer shut down, this optional back up feature allows actual time and date transmitted with the
generated test data.
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