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Miscellaneous

How do I clean my Mecmesin product, gauge, test stand? What alcohols can I use to clean it?

When cleaning the keypad care must be taken to avoid liquids, especially alcohols, seeping around the edge of the membrane. Therefore we recommend the use of a lightly dampened cloth to avoid liquid spillage onto the membrane.

How old, or when was my gauge, test stand, sensor or loadcell built?
How do I read the Mecmesin serial numbering?

The Mecmesin Serial Number uses the following format:

nn-nnnn-nn e.g. 07-1083-06

The year of manufacture is the first two digits = 07 (2007)

The next four digits are the amount of instruments made in that month, prefixed with:

0nnn = gauges

1nnn = test stands

2nnn = smarts

Finally the month of manufacture is the last two digits = 06 (June)

So the example serial number is a test stand built in June 2007 

What is the temperature operating range of Mecmesin force and torque equipment?

The operating temperature for all verified Mecmesin “standard” product is 10°C to 35°C but the calibration accuracy is only valid between 18°C to 22°C.

Are other speed variations available for Mecmesin motorised test stands?

Yes they can be made as a customised version.

Can Mecmesin test stands be produced with greater travel?

Yes they can be made as a customised version.

At what temperature does the thermal switch (305-046) in the MulitTest 2.5 stand operate?

The temperature that the switch activates at is 70°C.  This is the temperature at which the switch closes turning the fan ON.  It will alllow open turning the fan OFF at a lower temperature of 55°C so that it allows the system to be cooled down sufficiently as not to trigger it inot activating again too quickly.

I need a customised accessory, can you help?

Mecmesin application engineers have unrivalled experience in designing and developing special fixturing for testing particular products. If you are in the UK please contact Mecmesin directly on +44 (0) 1403 799979 or This email address is being protected from spambots. You need JavaScript enabled to view it., otherwise please ask your local distributor to contact Mecmesin with your requirements.

I want to measure forces typically up to 85 or 90N, so I need a force gauge with a capacity of 100 N, don’t I?

That depends!  A force gauge is a delicate instrument which can be irreversible damaged if too great an overload is applied. The golden rule is ‘when in doubt, opt for a larger capacity force gauge’. A 100 N AFG has an accuracy of ±0.1N, if it is really critical for you to be sure that, for example, the difference between readings of 86.4N and 86.7N is significant, and, if you are sure that a load above 100 N is most unlikely to be applied to the gauge, then you probably do need to choose an instrument with a 100 N capacity.

The speed at which the test is performed is also crucial. When running faster it is easier to overload the gauge.

However under most circumstances we would advise considering the 250N instrument, which has an accuracy of ±0.25N. Not only would this be perfectly suitable as a basis for concluding that, for example, the difference between a reading of 86.2N and 86.9N is significant, it would also provide some margin if loads well over 100 N, or even 200 N, were encountered.

Can I use an instrument of a higher capacity with a test stand of a lower rating?

For safety reasons never use any instrument with a capacity rated above that of the test stand.

The MultiTest-x console and systems used with Emperor™ will restrict the maximum capacity automatically to which ever is the lowest value out of Max Load Preference (or Local Overload), Stand capacity or the ILC/ITC/XLC capacity.

Can I use the XLCs or Vortex-i sensor on the MultiTest-i system?  Can I use the Vortex-i sensor or ILCs on the MultiTest-x system?  Can I use the XLCs or ILCs on the Vortex-i system?

No to all these questions, the MultiTest-i, Vortex-i and MultiTest-x systems are not compatible. Although the connectors are the same the loadcells and sensors can not be interchanged.

The MultiTest-i is designed for use with the ILCs only.

The XLCs are designed for use with the MultiTest-x only.

The Vortex-i is designed to be used with the Vortex-i sensors only.

Can the speed settings be fixed to avoid tampering on my Mecmesin motorised test stand? (MultiTest-i, Vortex-i and MultiTest-x, MultiTest, MultiTest-d and Vortex)

In the case of the Emperor controlled stands this can be done easily by using Emperor™ in the Operator mode rather than Master.  The user can then not tamper with the program being run. unless they use the password  to change to Master mode.

Similarly the MultiTest-x has a Supervisor mode. With Supervisor turned off the speed can not be changed.

I have been using a PC and a serial cable (RS232) to communicate with my Mecmesin equipment. I have just replaced my old PC with a new one, but my serial cable cannot be connected to the new PC. (RS232 and USB)

If your new PC cannot be connected to your Mecmesin equipment, that is because it has a (small rectangular) USB serial connector, instead of a (9 pin or 25 pin D-connector) for RS232 serial communication. If you have a Vortex-<EM>i</EM>, MultiTest-<EM>i,</EM> or MultiTest-<EM>x</EM> test stand you will need to use the RS232 / USB converter cable supplied. If you have older equipment (e.g. an Imperial test stand, or a force gauge and DataPlot, or WinWedge, software) you will need to purchase a converter cable, please ask for Part 432-228)

I intend to store my unit without for several months without using it; are special storage conditions required?

If the instrument contains a nickel-cadmium battery pack and is not intended to be used for at least two months, discharge the battery pack completely before storing. It is also recommended that such instruments are stored between 15°C to 30°C in low humidity conditions. After two months (plus) storage, it is essential the instrument undergoes two charge/discharge cycles before use (to attain the correct battery pack discharge capacity).

Our stand doesn`t move, moves slowly or appears stuck, what can we do? (MultiTest-i, MultiTest, MultiTest-x, MultiTest-d, Vortex or Vortex-i)

If the stand is moving slowly or not at all when you are jogging please consult your stand`s manual on how to speed up the jog rate. With some stands access may be restricted by a `supervisor` or `master` mode.

If the stand is used with a gauge please also check the gauge settings.

The MultiTest-i and Vortex-i jog buttons only move a small amount and are intended for emergency use. Use the buttons in Emperor™ or a use a program for more control.

Can I compensate for our system overestimating the deflection of our test sample, because the loadcell and stand also deform under load? (Loadcell Deflection Compensation, LDC, Stiffness factor, MultiTest-i, Imperial, ILC, MultiTest-x & XLC)

There is a facility within Emperor™ and on the MultiTest-x system to compensate for deflection/deformation of:                
1) the loadcell
2) the test stand
3) the fixturing.

With older MultiTest-i and Imperial systems we supplied a stiffness value for the test stand and ILC combination. We stopped this practice because customers frequently use different ILCs and so would need to calculate a new value for each ILC/test stand/fixture combination. Also some customers are not concerned with using the compensation. In order to calculate the Loadcell Deflection Compensation/Stiffness value (N/mm) you need to very slowly and carefully run to 90%-95% of the capacity of the loadcell or stand, whichever is smaller. Your local Mecmesin Distributor will be able to help you with this.

To input your Loadcell Deflection value open the programmed testing module of Emperor™ click on `Setup`, `System`, `Loadcell Deflection`. You will probably find that the `Stiffness:` box is empty.

If you are using only simple fixturing, e.g. just a compression plate and a short extension rod, you can simply type in the stiffness value and click on [OK].

If you have added fixturing which is likely to deform significantly under load, you will need to re-measure the stiffness of your system.

Your local Mecmesin distributor will be able to explain the procedures required and give you a program to calculate the required compensation value.

end-faq