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Hardness Meter PCE-HT-225A 
Handheld mechanical hardness meter for concrete / Schmidt-method /
solid measuring device / including a conversion table on the back /
long lifetime

The PCE-HT-225A hardness meter for concrete is easy to use and it is used in the construction industry as well as in 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 given 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 resistance to pressure, as an orientating value for testing the load capacity and durability of concrete constructions. Resitance 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 exist 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. If there are any questions about these products, please call: UK customers +44(0) 23 809 870 30 / US customers +1-410-387-7703. An overview of all hardness meters can be found here: hardness meters. Our technicians and engineers will gladly give you advice on this professional hardness meter and all other products in the field of measuring instruments, regulation and control, laboratory equipment and scales.

PCE-CT 26 Thickness Gauge user´s manual.  EC certificate for the PCE-HT 225 hardness meter  Video for the PCE-HT 225A hardness meter  Specifications for the PCE-CT 26 Thickness Gauge  Further information on the PCE-HT 225A hardness meter

Further information on the hardness meter PCE-HT 225A

Solid design
Special rebound body to make numerous tests
Measurement adjustments listed in the manual

-  Conversion table on the back
- Optional ISO calibration ceritificate
Very easy to use

General information about concrete resistance to pressure

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 cement block
  - 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. Once the concrete sample is chosen, it is recommended to immediately prepare flat and smooth upper surface. 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 applied.

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 manual.

PCE-HT-225A hardness meter for concrete: measuring the hardness of a wall

Technical specifications of the hardness meter

Range of measurement

100 to 600 kg/cm² (~9.81 to 58.9 N/mm²)

Energy

2207 J

Adhesion of the probe tip

0,65 ... 0,15 N

Radius of the probe tip

25 mm ±1 mm

Average rebound value

80 ±2

Elastic expansion of the spring

75 mm ±0,3 mm

Indication of measurement

0 to 100 (without dimensions)

Maximum thickness of concrete (of the material)

70 cm

Dimensions

diameter 54 x 280 mm

Weight

1 kg

Delivery content of the hardness meter

1 x PCE-HT-225A hardness meter 
1 x grindstone
1 x carrying case
1 x user manual

PCE-HT-225A hardness meter for concrete: carrying case for the PCE-HT 225A.

Optional accessories
- ISO calibration certificate:
For companies that wish to incorporate the device into the internal quality control tools or for annual recalibrations. The ISO certificate includes a calibration and a document containing all the calibration readings.

PCE-HT-225A hardness meter for concrete: ISO calibration certificate

- 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 they can also give you a quote and schedule your ENAC calibration.

PCE-HT-225A hardness meter for concrete: ENAC calibration certificate

technical specifications for the PCE-HT-225A hardness meter for concrete.

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Here you will find an overview of all the measuring instruments available at PCE Instruments.

Contact:
PCE Instruments UK Limited
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone: +44(0) 23 809 870 30
Fax: +44(0) 23 809 870 39

Contact:
PCE Americas Inc.
711 Commerce Way suite 8
Jupiter 33458 FL
USA
Phone: +1-410-387-7703
Fax: +1-410-387-7714

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Below you will find an overview of the different product groups of measuring instruments

 Absolute Humidity Meters
 Accelerometers
 Alert Meters
 Air velocity meters
 Analyzers (Colour)
 Analyzers (Gas)
 Analyzers (Lan)
 Analyzers (Noise)
 Analyzers (Oxygen)
 Analyzers (Ozono)
 Anemometers
 Barometers
 Borescopes

Cable detectors (electrical)
Calibrators
Cameras (Infrared Thermal Imaging)
Capacitance Meters
Coating Thickness Meters
Chlorine Meters
Clamp Meters
Climate Meters
Colour Meters
Conductivity Meters
Contact Thermometers
Current detectors

Data Loggers
Differential Pressure Meters
Digital Multimeters
Densimeters
Detectors (Humidity, Radiation, Voltage)
Dose Meters (Noise)

 Earth meters
 Endoscopes
 Environmental Meters

 Fiberscopes
 Flow Meters Air
 Flow Meters Gas
 Force Gauges (digital)
 Frequency Meters

 Gas detectors
 Geiger Counter

 Handheld Tachometers
 Hardness Meters
 Humidity Testers
 (Building material)
 
Hygrometers

Indicator Sound Level
Indicators (Humidity)
Instruments (Environmental)

Impedance bridges
Infrared Thermometers
Isolation Meters

Lan Network Testers
Laser Distance Meters
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Laser meters
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LCR Meters
Length Meters
Light Meters
Lux Meters

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 Measurement Devices
 (Force)
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 Meters (Temperature)  
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 Modular signal 
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 Moisture Indicator
 Multimeters
 Multi-Parameter    
 photometers

Noise Meters

 Odometers
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 Oscilloscopes
 Oxygen Meters
 Paper Moisture Meters
 Penetrometers
 Pitot tube air flow
 meters
 Pocket pH-meters
 Power Analyzers
 Pressure Gauges
 Pyrometers
 Quality Meters (Air)
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 Reader (Temperature)

 Recoders Data
 Redox Meters
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 Relat. Humidity meters
 Rotation meters
 Roughness tester
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 Signal Level Analyzers
 Single-parameter  
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 Environmental
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 (electronic)
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 Surface Thickness 
 meters

Tachometers
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Thermo-Hygrometers
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Testers (Air)
Tester (Conductivity) Tester (Earth)
Tester (Electric)
Tester (Insulation)  Tester (Noise)
Tester (pH)
Tester Resistance Tester (Sound)
Tester (Temperature)
Thermal stress
Thermal Imaging Cameras
Thermometers
Thermocouples
Thickness Meters
Turdibity Meters

Ultrasonic Flow Meters

VDE tester
Vibration Meters
Video endoscopes
Voltage meters