Mecmesin Vortex Operating Instructions Manual page 2

Thank you for choosing this Mecmesin instrument. With correct use it will give many years
of reliable service. Upon receiving the unit please check that no obvious physical damage
has been sustained by the packaging material or the instrument itself. If any damage is
evident, or if any of the items in Appendix 1 are missing, please notify Mecmesin or their
Authorised Agent immediately. We strongly recommend that all the packaging and fixings
are retained for any future transit requirements.
When using the Vortex please ensure that the ventilation holes situated on the back and
bottom of the unit are not obstructed.
SAFE OPERATION OF THE VORTEX
Appendix 2 gives guidance notes on the safe use of mains powered test frames. You
should read this before proceeding any further.
Failure to adhere to the guidelines for safe use given in these operating instructions may
result in irreparable damage to the unit and personal injury to the operator.
INTRODUCTION TO THE VORTEX MOTORISED TESTER
The Vortex is a motorised torque measuring instrument with a rated capacity of 10N.m and
a speed range of 0.5 to 15rpm. It enables a repeatable and constant test speed to be set,
so reducing variability in test results caused by operators manually performing tests at
different speeds.
The torque is measured on the Vortex by means of a static transducer mounted on a
moveable crosshead and connected to an AFTI display (Advanced Force/Torque Indicator).
The functionality of this digital display is outlined in the separate manual enclosed.
Please note that the AFTI will not function if the transducer is not connected securely.
In addition to the digital display of torque, speed is also displayed digitally during the test.
This is switchable with a display of total angular rotation if required.
Some testing requires the sample to be pre-loaded axially in order to enable the torque to
be measured, as with a child resistant container of the push and twist type (ASTM D3475
type 1A or 11A). The transducer can accept up to a maximum of 5Kg axial loading. Weights
should be placed in the platen at the top of the adjustable column. Please ensure any
weights are safe and secure prior to commencement of testing.
To carry out testing, the sample under evaluation needs to be gripped securely in the top
and base fixtures. Both are fully adjustable and the most appropriate position can be found
by positioning the rubber pegs in the threaded runners and then tightening. Results can be
affected if the sample is not squarely held during the testing process. Please contact
Mecmesin for cost and availability of dedicated gripping mechanisms, if required.