Concrete Hammer Test Proceq Digital SIlver Schmidt Type ST-N Digital

The SilverSchmidt ST/PC is the first integrated concrete test hammer featuring true rebound value and unmatched repeatability.

Two factors contribute to the improved performance of this concrete test hammer over its predecessors: 

    Velocity based detection of the rebound quotient

    The lightweight hybrid design of the impact plunger is made from aerospace alloy, matched to the elastic properties of the concrete and equipped with a hardness steel cap

Independent validation testing by BAM (Federal Institute for Materials Research and Testing, Germany) has shown the SilverSchmidt ST/PC to have less dispersion than the classical concrete test hammer over the entire range. 

The unique design and high quality construction of the concrete test hammer SilverSchmidt ST/PC makes rebound hammer testing quicker and more accurate than ever before.

Features

    The SilverSchmidt ST/PC concrete test hammer combines a high measurement accuracy with an unmatched repeatability.

    The rebound value requires no angular correction

    The concrete test hammer offers customer conversion curves for a wide range of compressive concrete strengths, including low fc (<10 N/mm2, 1’450 psi) and high strength concrete (up to 100 N/mm2, 14’500 psi)

    A large number of measurement points can be easily collected by the concrete test hammer and automatically evaluated according to statistical data

    The concrete test hammer offers automatic conversion to the required measurement unit (MPa, N/mm2, kg/cm2, psi)

Applications

    Ideally suited for on-site tests of concrete

    The concrete test hammer is suitable for testing a wide variety of concrete, mortar and rock, but also for testing metal castings

    Handy for difficult to access or confined test areas (i.e. working overhead)

    Assessment on young, soft concrete with mushroom plunger of the concrete test hammer, eg. asphalt strength testing

    It can be even used for underwater applications

    Combining Methods to Evaluate Concrete Strength

Product Variations

    Concrete test hammer SilverSchmidt Type ST N - Standard impact energy (2.207 Nm)

    Concrete test hammer SilverSchmidt Type ST L - Reduced impact energy (0.735 Nm)

    Concrete test hammer SilverSchmidt Type PC N - Standard impact energy (2.207 Nm) with PC communication, increased memory capacity and Hammerlink software

    Concrete test hammer SilverSchmidt Type PC L- Reduced impact energy (0.735 Nm) with PC communication, increased memory capacity and Hammerlink software

Applicable Standards

The following standards can be applied to the concrete test hammer:

    EN12504-2 (European Standard)

    ASTM C 805 (North American Standard)

    JGJ/T 23-2001 (Chinese Standard)

Technical Data

Mechanical data

   

Type ST N / PC N

concrete test hammer

   

Type ST L / PC L

concrete test hammer

Impact energy

   

2.207 Nm

   

0.735 Nm

Hammer mass

   

135 g

   

135 g

Spring constant

   

0.79 N/mm

   

0.26 N/mm

Spring extension

   

75 mm (2.95”)

   

75 mm (2.95”)

Housing dimensions

   

55 x 55 x 255 mm (2.16” x 2.16” x 9.84”)

Weight

   

570 g (1.3 lb)

PC application

   

Only for the concrete test hammer SilverSchmidt versions PC N and PC L: Hammerlink Software

Electrical data                         

   

Display

   

17 x 71 pixels; graphic / alphanumeric

Power consumption

   

~13 mA measuring, ~4 mA setup and review, ~0.02 mA idle

Battery life

   

>5000 impacts (before recharging)

Charger connection

   

USB type B (5V, 100 mA)

Measuring ranges

   

Concrete compressive strength

   

10-100 N/mm2 (1450-14500 psi)

Operating temperature

   

0 to 50 °C (32 to 122 °F)

Storage temperature

   

-10 to 70 °C (14 to 158 °F)









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