PCE-HT-225A hardness meter for
concrete
handheld mechanical
hardness meter for testing concrete
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The PCE-HT-225A hardness
meter for concrete is easy to use and is
fundamentally used in the construction
industry as well as other industrial
sectors (testing for Wickel hardness of
rolls in commodities).
This hardness meter in the form of a
hammer device for testing concrete is
based on the Schmidt principal of
measurement. Testing is always done
under the same test energy of
2207 J.
The kinetic energy of the rebound is
givne by the device as the measurement
of the hardness of concrete, of the
pressure upon the surface or as the
resistance to pressure
(kg/cm² or its
conversion to N/mm²).
The quality of concrete is useful in
understanding the material's resistance
to pressure, as an orientating value for
testing the load capacity and durability
of concrete constructions. Resisitance
to pressure is represented as a series
of numbers and letters, for example: B 25
indicates that the material is normal
concrete with a resistance to a pressure
equal to
25 N/mm². Different
readings exsist up to the highest class
of resistance which is indicated as B 55.
With our hardness meter you will be able
to easily and accurately classify
concrete. The hardness meter comes
calibrated from the manufacturer but an
ISO calibration certificate can be
ordered seperately at extra cost. This
link
shows an overview of all the hardness
meters we have available to suit your
needs.
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Solid design.
- Special
rebound body to make numerouas tests
of concrete
- Very
easy to use
- Conversion table no the
back
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Measurement adjustments listed in the
user's
manual
-
optional ISO
calibration ceritificate
Table on the back
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PCE-HT-225A hardness meter for
concrete
View or print the user's manual
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General information
about concrete's resistance to
pressure
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Resistance to pressure is generally
defined as the measurement of
resistance to breaking under a
particular pressure load at an axis
during a brief point in time. The
resistance to pressure of concrete
is determined, taking into account
the following parameters:
- Resistance of
a block of cement
- Composition
and compactness of concrete
- Time and
conditions of storage
- Dimensions
and form of element being tested
- Type and
duration of load
Resistance
to pressure is normally determined
in laboratories using cubes or
cylinders of concrete. If using
cylinders, once the concrete sample
has been chosen, it is recommended
that a surface is immediately
prepared that is flat and smooth.
Cylinders are very durable. In
places where it's not possible to
take measurements with methods used
in laboratories, a hardness meter,
with an easy to use hammer, is used.
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The
image to the right shows the
hardness meter measuring a plinth of
an old wall in an old factory
building. The plinth is not inlcuded
and for this reason, the measurement
is made on the painted concrete
surface. The degree of hardness is
obtained accurately after the
measurement is done using the
rebound body (rebound value = R)
upon the surface of the concrete and
with the help of a conversion table
on the back or in the user's manual. |
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Technical
specifications |
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Range of
measurement |
100 to 600 kg/cm² (~9.81 to 58.9 N/mm²) |
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Accuracy |
±18
kg/cm² (~±1.8 N/mm²)
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Energy |
2207
J
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Indication
of measurement |
0
to 100 (without dimensions) |
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Scale for the resistance
to pressure at the back |
to convert values indicated without
dimensions to
kg/cm² (with
introduction of angle) |
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Correction
table for measurements |
in the
user's manual |
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Maximum thickness of
concrete
(of the material) |
70cm |
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Dimensions |
diameter de 66 x 280mm |
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Weight |
1kg |
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Contents
PCE-HT-225A hardness meter (Schmidt
method),
calibration plate
carrying case
user's manual
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Optional accessories
- ISO
calibration certificate:
For companies that wish to incorporate the
device into their array of internal quality control tools or for
annual recalibrations.
The ISO certificate includes a calibration and a
document containing all the calibration readings taken. |
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ENAC
calibration
Aside from an ISO calibration
certificate, we can also offer an
ENAC calibration. As this is not yet
treated as a standard laboratory
calibration, please contact us by
phone or by fax to get more
information. One of our technicaians
will provide you with further
information and if you wish they
will also quote you a price and
schedule your ENAC calibration. |
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Here you will find an overview of all the
measuring instruments available at PCE Group. |
Contact:
Companies House England
Tursdale Business Park
Co. Durham - DH6 5PG
United Kingdom
Phone. +44 ( 0 ) 191 377 3398
Fax +44 ( 0 ) 191 377 3357 |
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