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Subject to technical modications
10.5. Measuring the tie bar strain distribution
During the tie bar strain measurement, the machine must not
be operated or closed at high speed as vibrations can aect the
measurement.
10.5.1. Preparation
The sensor system must be activated in accordance with Chapter 10.4.1.
Before measuring, make sure that the sensors or the strain gauge are stretched and
compressed (settle). This is done by activating the closing mechanism of the machine 2 to 4
times (closing and opening). Before any operation, press „RESET“ in the display software.
As soon as the oset amounts to a maximum of 1 digit when the machine is open, the sensor
system is ready to be used for measurements.
10.5.2. Measuring
The values displayed are bending compensated since two sensors facing each other are guided
and averaged on the same measurement input. The values displayed in [µε] correspond to the
eective strain of the tie bar.
Example: Display software Inspectmate „355[µε]“ = 0.355mm length variation per meter tie bar
The force in the tie bar can be calculated from the eective strain [µε]. The software
Inspectmate displays ‘kN’, ‘tons’ or US-tons directly on the computer screen. The data can be
saved in CSV le format and imported for example in a spreadsheet program for further use
(see Chapter „Instructions for Inspectmate 4.0“).
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