Mecmesin MultiTest-x Series - Setting Initial Conditions

Mecmesin MultiTest-x manual
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• The MultiTest-x system is fitted with a loadcell with a capacity of 50 newtons
or greater
• The lowest part of the fixture is at least 500mm above the ‘anvil plate’ (the
flat black plate on the base of the MultiTest); press and hold the [Jog Up]
key if it is not. This is because, to avoid the need to use a particular
specimen, you will be pulling on the loadcell with your fingers – so ample
clearance is very important, see Appendix 2 . (Note, the crosshead will move
up very slowly, then move back down the same distance, absolutely
minimising any chance of injury.)
• The MultiTest-x system is in ‘supervisor mode’ (see, [1], [4], <8>) – this is
essential to develop any procedure.
The first six stages described below are typical of those required for the development
of any test procedure – even a much more complicated one!
Stage (7) will be required if test data need to be saved to a computer or data logger,
rather than, for example, written down in a lab’ notebook. Unless you are an
absolutely excellent programmer, stage (8) will be required much more often than you
think!
Note: Although it is not strictly necessary to return to the Main Menu (by pressing the
[Stop/BK SP] twice) between each stage, it is a recommended ‘good practice’,
because each time the Main Menu is re-displayed, the procedure will be re-saved.
1) Setting Initial Conditions
i) Set the force units to ‘N’, and distance units to ‘mm’ ([1], [3], [1], [5]
Engineering Units)
ii) Set the local overload to 50N, ([1], [3], [1], [4] Local Overload)
iii) Make sure that sample break is disabled ([1], [3], [1], [2] Sample Break)
iv) Make sure that the ‘touch control’ feature is disabled. ‘Touch load’ (see, [1],
[3], [3], [7]) and ‘Touch speed’ (see, [1], [3], [3], [8]) must both be set to zero.
v) Specify that test will be a tension test, ( [1], [3], [3], <2>, Dir(ection) –
TENSION)
vi) Specify that tolerance limits will be based on absolute values ([1], [4], <2>,
Limit Type-ABS)
Press the [Stop/BK SP] key twice to return to the Main Menu.