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permanent magnets made of ferrite iron and having high
magnetic energy. The magnetic poles of the magnetic
measuring unit are protected by a non-magnetic overlay made
of "Melchior" type alloy.
3.5.3. The Hall effect sensor is located in the housing
of the magnetic measuring unit next to the magnetizing system
and measures the field strength of the residual magnetization
above the metal surface.
The output of the Hall effect sensor is connected to a
flexible electrical cable that has a connector for connecting to
the electronic unit of the metal mechanical stress scanner.
3.5.4. To bring the magnetic measuring unit of the
stress scanner into forward motion, the housing is equipped
with a handle.
4. SAFETY INSTRUCTIONS
4.1. Persons who have studied sections 2-5 of this
operating manual, as well as those who have received
instructions on safety and fire safety when working with
electrical installations, are allowed to operate, maintain and
repair the stress scanner.
4.2. Replacement of elements of the electrical diagram
of the stress scanner at the setup stage should be carried out
when the power supply voltage is switched off.
4.3. When working with the stress scanner, the
requirements of the
Rules of technical operation of electrical
installations of PTE-84 consumers
and
Safety rules for the
operation of electrical installations of PTB-84 consumers
must
be met.
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5. PREPARING THE METAL STRESS SCANNER
FOR WORK
Preparation of the stress scanner for work includes
preparation of the electronic unit, magnetic measuring unit and
preparation of the inspected metal surface of the steel products
and structures.
5.1. Before turning on the stress scanner after
transporting it in cold weather, keep the stress scanner under
normal conditions of use for at least 2 hours.
5.1.2. Insert freshly charged 18650 batteries into the
battery compartment of the electronic unit, observing the
polarity of the contacts.
5.1.3. Connect the magnetic measuring unit to the
electronic unit of the IN-02 stress scanner using the connector,
inserting the cable part of the connector into the instrument
part of the connector until it stops.
5.1.4. Turn on the IN-02 metal mechanical stress
scanner by pressing the power button. In this case, the screen
should light up, where the service information appears and the
value of the measured signal is set (see section 3.4.2).
5.1.5. In low light conditions, to improve the visibility
of the readings, turn on the screen backlight button.
5.2. Preparation of the magnetic measuring unit
consists in external inspection and cleaning of the surface of
the magnetic poles, Hall effect sensor from stuck metal
particles and dirt. To do this, use a rag.
5.3. Preparation of the inspected metal surface of a
steel product or metal structure consists in pre-cleaning it from
the remnants of insulation, dirt, oil and metal particles. To do
this, use an appropriate tool, rag, sandpaper, or file.
