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QE-1008_Instruction Manual_02-2014_ENG
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3. Instructions
IMPORTANT:
These sensors are sensitive measuring instruments with a resolution of 0.001 mm (i.e.0.000004 mm respective to the
gauge length).
Please handle this instruments with the respective care. These instructions have to be read carefully by any user prior
to application.
3.2 Installation
Set the sensor carefully onto the tie bar at a location where another sensor can be set 180º opposite.
(Important: position should be at least one time the diameter away from the fixed platen; i.e. homogeneous strain distribution
is guaranteed for comparable results).
3.3 The magnets hold the sensor already on the surface. This allows easy shifting until the sensor can be installed at the
desired location.
3.4 Press now slowly and carefully one magnet after the other down, until it jumps
onto the structure.
Turn now the adjustment nut just as strong that the magnet does not jump off =
maximum magnet force.
3.5 If the magnet jumps off, then the spring force is too high. Loosen the
adjustment nut 2 that the spring 3 is loosened (e.g. one rotation of the mounting
nut counter-clockwise).
3.6 CHECK: The sensor shall not move if you try to shake it slightly. The machined
edges of the magnet-groove need to be in contact with the tie bar on the whole
length.
3.7 Now it is time to mount the second sensor opposite on the tie bar (see picture
A on the following page).
The sensors can be mounted in any angle – but in any case exactly one opposite
the other.
Remark: Only when two sensors are more than 8 degrees off the correct opposite
position, then an error >1% of the measuring value occurs!
Operator
Extensometer QE-1008
A Tie-bar measurement only
B Exact positioning
fixed platen
tie-bars
Radial position of the sensors on
the tie bar (can be positioned in
any direction if the two sensors
are placed exactly one opposite
the other).
Axial position of the
extensometers on the tie
bars
Mounting of the magnet sensors
(see also separate instruction with pictures)
3.1 Preparation
Connect the cable to the sensor.
Clean the mounting spot from oil, loose parts, paint and other parts on the surface
The area where the foil is being placed must be even that the foil is not damaged.
All sensors have the same sensitivity, so there is no need to match them during
mounting.
Power plug
Spring 3
Adjustment nut 2
