DEMAGNETIZATION:
Small pieces, which have become
residually magnetized, may be easily demagnetized by
the following procedure: Energize the Probe and pass
small parts through the area between the leg ends “feet”
and withdraw to a distance of approximately two feet.
On large pieces, place the Probe in the same position
as inspection, energize the Probe and lift from the work
surface to a distance of approximately two feet. This
procedure may need to be performed more than once to
remove the residual field.
AC MAGNETIZATION:
An AC magnetic field induced
into a
part is a “skin” or surface field and does not
penetrate the cross section of the material. A by-product
of AC is in the form of eddy currents. These eddy
currents tend to guide or direct the magnetic field in a
narrow pattern between the poles. Another by-product is
a vibratory action, which adds mobility to the inspection
particles to form a more highly defined powder build-up at
the defect. For these reasons, an AC magnetic field is the
most desirable for the detection of surface breaking
defects.
CAUTION:
Small parts may become magnetically saturated due to excessive field application. This
may cause a masking effect to the point where it is impossible to define a defect.
WARRANTY:
The Parker 300-MR series are warranted against malfunction due to defective material
and or workmanship. The defective unit will be repaired or replaced (less incoming freight charges) for
a period of one year from the date of sale. This repair warranty does not apply to altered units. Repair
or replacement of the defective unit will be made at the discretion of Parker Research Corporation.
Repaired or replacement unit(s) will be returned to the original customer prepaid.
The obligation of Parker Research Corporation is limited to the repair or replacement of the defective
unit. No other obligation is expressed or implied. Parker Research Corporation assumes no liability
from any claims arising from the use of this equipment.
CAUTION:
For the correct and safe use of this equipment, training of operating personnel is required.
Use of proper inspection procedures, standards compliance and safety requirements is the obligation of
the user.
ALWAYS WEAR SAFETY GLASSES WHEN USING THIS EQUIPMENT
Fig. 2
PARKER RESEARCH CORP.
2642 ENTERPRISE ROAD WEST
CLEARWATER, FL 33763