GE
Inspection Technologies
DynaPOCKET
Pocket-Size Hardness Tester
standardized to ASTM A 956
Mobile hardness testing - faster, easier.
With no trouble at all.
Are you facing the task of having
to determine the hardness of large,
non-transportable components?
Do you still work with a Poldi Hammer?
Do you need an economic and easy
method for on-site hardness testing?
In this case, we would recommend
to you our small, compact, rebound
hardness tester DynaPOCKET which
has no trouble at all in solving such
test tasks. This is possible because
the instrument’s size is yet smaller,
it’s yet faster in operation, and yet
easier to use.
With compact setup.
The DynaPOCKET integrates the
impact device and display or
evaluation unit into one instru
-
ment. This means: small dimen
sions, low weight, no cables. As
a result, you’ll have an extremely
compact hardness tester at your
disposal which really fits into any
pocket, and goes with you every
-
where without any problem.
No matter which test location,
which test position, and which
test direction you wish to work
in, the DynaPOCKET is the right
instrument.
With easy operation.
Needless to say, we have ensured
easy and straightforward opera
tion: All functions can be activated
in the DynaPOCKET with just two
keys.
The DynaPOCKET makes hardness
testing fast and easy as never
before: switching on, measuring,
and reading - in a matter of
seconds! The hardness value is
immediately digitally displayed
on the large and easy-to-read
LCD display.
Naturally including innovative technology.
The “dynamic” method.
The DynaPOCKET operates according to the rebound method in which
an impact body is impelled against
the test surface by spring force.
Impact and rebound velocities are
each measured in non-contact
mode; the hardness value is calcu
lated on the basis of these two
readings. The harder the material,
the higher the rebound velocity and
the displayed hardness value. The
rebound method offers measure
ment with high precision and
reproducibility, and consequently
an especially high test reliability.
The patented technology.
Now, that’s what we call easy
testing: when using the DynaPOCKET,
you’ll measure immediately, every
where, in any direction – and all this
with constant accuracy. This is
ensured by our patented signal
processing which spares you the
trouble of having to input additional
correction factors for the impact
direction, no matter if you’re
measuring in horizontal or over
-
head positions.
The ease of use.
We even make the calibration of
the DynaPOCKET easy for you:
Standard conversion tables for
nine material groups are stored in
the instrument from which you
can choose the one that suits your
application. You’ll easily recognize
the material groups by the alphanu
merical abbreviations displayed by
the instrument (e.g. St for low-alloy/
unalloyed steel and cast steel, GCI
for gray cast iron, Cu for wrought
copper alloys, etc.).
The measurement itself is child’s
play, and the measured hardness
value is directly displayed. Of course
you can decide for yourself whether
you wish to see the single reading
or the arithmetical mean or aver
-
age value of a complete measure
-
ment set.
It goes without saying that the
DynaPOCKET makes various
hardness scales available for you
to choose from. A conversion is
possible to the following scales:
• HL Leeb
• HS Shore
• HB Brinell
• HRB Rockwell B
• HRC Rockwell C
• HV Vickers
• N/mm² Tensile strength
The DynaPOCKET is also able to
make conversions according to the
standard specifications DIN 50150
and ASTM E 140, provided the
material group in question is lowalloy/unalloyed steel and cast steel.
The instrument-specific conversion
tables apply to the other materials.
You can directly read the measured
hardness value on the large LCD display.
At the same time, the selected hardness
scale (in this case HL) and the option
Average x_ is displayed. The battery icon
informs you about the current battery
charge condition.
In the setup or configuration mode,
you can select different settings,
in this case e.g. the required hardness
scale (SCAL), or a material group (MAt).
Other setting options: Single/Average,
conversion according to DIN 50150,
ASTM E 140, or instrument-specific
conversion.
www.ge.com/inspectiontechnologies
© 2006 General Electric Company. All Rights Reserved. We reserve the right to technical modifications without prior notice. GEIT-20029EN (04/06)
This is where the small DynaPOCKET comes out real big.
Mobile on site.
The DynaPOCKET is an instrument
for on-site hardness testing. Thanks
to its compact size, it enables tests
in almost any position, especially
in places where the access is
difficult due to the test object’s
geometry. Heavy, non-transport
able components are also a case
for the DynaPOCKET, the same as
permanently installed system
parts or machines.
Application examples.
Rebound hardness testing using
the DynaPOCKET is mainly suitable
for solid workpieces made of steel
or cast materials. The following are
typical applications:
• large, coarse-grain components
with surfaces as rolled
• forgings with inhomogeneous
surface structures
• workpieces made of cast
materials of all types
• material sorting in material
stores
• hardness testing of large series
products during the production.
Test method
Rebound hardness testing according
to ASTM standard specification A 956;
dynamic measuring method; ratio of
rebound (Rp) and impact (Ip) veloci
ties with output of hardness in Leeb’s
hardness value HL = 1000 Rp/Ip
Setup
Miniaturized processor-controlled
rebound hardness tester; impact
device and integrated electronics
Integrated impact device
Dyna D (tungsten carbide spherical
test tip); impact energy approx.
12 N/mm², diameter of spherical test
tip 3 mm / 0.1“
Materials tested
Forged, rolled and cast materials
Stored material groups
Low-alloy/unalloyed steel and cast
steel; tool steel; corrosion-resistant
steel; gray cast iron; nodular graph
ite iron; aluminum cast alloys; brass;
bronze; wrought copper alloys
Measuring range
Depending on the material group,
e.g for low-alloy steel: 150-1000 HL;
75-1000 HV; 75-700 HB; 35-100 HRB;
20-70 HRC; 30-100 HS; 250-2200 N/
mm²; 9 fixed material groups stored in
the instrument
Display
LCD, 4-digit display of the hardness
value and status symbols
Conversion scales and resolution
HL (1.0); HV (1.0); HB (1.0); HS (0.1);
HRC (0.1); HRB (0.1); N/mm² (5.0)
Conversion
According to DIN 50150, ASTM E 140,
instrument-specific conversion (Dyna)
Statistics
Display of average value
Automatic instrument switchoff
After 3 min. of non-use in the average
mode
Keypad
Membrane keypad with 2 keys
Specifications and Accessories
Power supply
Battery operation (2 x AAA cells, NiCd,
NiMH or AlMn)
Operating time
>4000 measurements depending on
battery type
Battery charge indication
LowBatt indicator, instrument switchoff
with low voltage
Permissible temperatures
Operation: -10°C to +50°C (14°F to 122°F)
Storage: -20°C to +70°C (-4°F to +158°F)
Lower temperatures according to
individual tests
Weight
approx. 200 g / 0.4 lb.
Dimensions
38 x 170 mm / 1.5" x 6.7"
(diameter x length)
Test attachments
For better positioning with curved
surfaces; for spherical, hollow spheri
cal, cylindrical and hollow cylindrical
surfaces (Dyna 41 and Dyna 42)
Other accessories
Transport case, cleaning brush,
hardness reference block MIC D62,
hardness reference block MPAcertified, grinding set for surface
treatment, exchange impact bodies.
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