Parker Research Corp 200 Series User manual

PARKER RESEARCH CORP. •
OPERATING INSTR CTIONS
MODEL 200 SERIES
CONTO R PROBES
B LLETIN 234
A G 2013
NONDESTR CTIVE TEST METHODS, SYSTEMS, INSTR MENTS
The 200 Series Contour Probes are rugged high performance instruments designed for
agnetic Particle inspection to accepted Nondestructive testing standards.
INSTRUMENT DESCRI TION: Basically, the Contour Probe is an electromagnet producing a
strong magnetic field. Placement of the two poles (legs) upon ferrous metal provides a path
for the intense magnetic field to pass from one pole to the other. The part completes the flux
path and becomes highly magnetized. odels A210, A210S and A48 produce strong
constant AC fields. Electronic circuitry contained within the molded housing of the DA200 and
DA200S models permits selection of a strong constant AC field, or high intensity half wave
rectified (DC) field. All Parker Contour Probes are designed with flexible legs that allow the
field to be "focused" at a precise area of inspection. The maximum leg spacing is 18 inches
(457 mm). All 200 series Contour Probes come equipped with a 10’ (3.048 m) power cord.
The DA200 and A210 are for use on 115VAC 50-60 Hz, single phase grounded power
source. Using an approved GFCI is recommended.
The DA200S and A210S are for use on 230VAC 50-60 Hz, single phase grounded power
source. The DA200S and A210S are sold without power cord plugs. Only locally approved
plugs should be used and installed by certified personnel. Using an approved GFCI is
recommended.
The A48 is for use on 42-48VAC 50-60 Hz, single phase grounded low voltage power source.
The A48 is sold without a power cord plug. Only locally approved plugs should be used and
installed by certified personnel. Using an approved GFCI is recommended.
SPECIFICATIONS
MODEL POWER
REQUIREMENTS FIELD WEIGHT
DA 00
117 VAC ±10%
50-60 Hz
6 AMPS
AC OR DC 1 lb
(5.44 kg)
DA 00S
30 VAC ±10%
50-60 Hz
4 AMPS
AC OR DC 1 lb
(5.44 kg)
A 10
117 VAC ±10%
50-60 Hz
9.5 AMPS
AC ONLY 1 lb
(5.44 kg)
A 10S
30 VAC ±10%
50-60 Hz
4 AMPS
AC ONLY 1 lb
(5.44 kg)
A48
4 -48 VAC
50-60 Hz
1 -14 AMPS
AC ONLY 1 lb
(5.44 kg)
FIG. 1
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General safety rules. Please read all instructions. Failure to follow all instructions listed
below may result in injury. If the equipment is used in a manner other than as specified in
these operating instructions, the protection provided by the equipment may be impaired.
Always wear eye protection
DO NOT O ERATE unit from a DC power source.
Warning: Do not change AC/DC selector switch with probe on.
Do not abuse the power cords. Never carry the instrument by the cord or attempt to unplug
the instrument using the cord. Always operate the instrument with the standard installed
cord. Changing or using a damaged cord can increase the risk of electrical shock. The cord
should be checked periodically for any damage.
Do not position the instrument such that it would be difficult to operate the disconnect device
(plug) on the end of the power cord.
The outside housing should remain intact and solid. Any damage, chipping, or separating
exposing internal wires is a hazard. Instruments should not be used in this condition. The
outside housing should be periodically checked for damage.
Duty Cycle: The 200 series are designed for a 50% duty
cycle, or approximately two minutes on and two minutes off.
Continuous operation may cause overheating and damage
the Contour Probe.
Operating Environment: Temperature: 32° to 104°F (0° to
40°C). Relative humidity: 10% to 95%, non-condensing.
Shipping and Storage Environment: Temperature: 40° to
140°F (4.44° to 60°C). Relative humidity: 5% to 95%.
Vibration and shock: As encountered in normal shipping
and handling with no degradation.
General Cleaning
The outside surface of the instrument can be periodically
wiped with a clean cloth and a mild general purpose
cleaner. Avoid using cleaners such as lacquer thinner, or
mineral spirits that could damage the outside housing.
Never attempt field service. All 200 series contour probes should be returned to the factory
for repairs.
O ERATION: Connect the instrument plug into a Grounded power outlet of proper voltage.
Place the Contour Probe legs upon the work surface with the suspected defect at right angles
to the legs (Good contact will produce the best results). Push the test switch to energize the
instrument. Lightly dust or float dry magnetic inspection powder over the area being
inspected. Defect indications will be revealed in a direction shown on figure 2. Turn the
Probe 90 degrees from the first test and repeat the process. This method may also be utilized
when applying a wet medium. Check all procedures and standards for further details involving
inspection specifics.
FIG. 2
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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.
HALF WAVE RECTIFIED (DC) MAGNETIZATION: A DC field induced into a small work
piece penetrates a larger cross section of the part and is inclined to spread out of each side
of the line between the poles. The field energy is dispersed over a greater area. Thus, DC
provides greater penetration for the detection of near-surface defects in small parts.
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 200 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 claim 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 EQUI MENT
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