SilverSchmidt type BN Concrete Test Hammer

SilverSchmidt type BN Concrete Test Hammer

SilverSchmidt type BN Concrete Test Hammer
to BS1881, EN12504 part 2:2001
CodeCN659
British StandardBS1881-202
Other StandardsEN12504-2
Approx. Weight (kg)4
Tariff90248090
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The new SilverSchmidt concrete test hammer offers a virtually maintenance free, lightweight and compact construction. This next generation tool combines an electronic display and advanced mechanics with true rebound coefficient that automatically converts to compressive strength.

Extended Range of Applications

• Conversion curves are provided for a wide range of compressive concrete strength, including low and high strength concrete fc <10 N/mm2 (1.450 psi) and up to 170 N/mm2 (24.650 psi) • Conversion curves for different types of modern concrete are pre-set in the SilverSchmidt, based on tests performed by an independent institution

Compliance with Industry Standards

• Data collection and processing of test results comply with major industry standards EN 12504-2, ENV 206, ASTM C805, ASTM D5873 (Rock), BS 1881, part 202, JGJ/T 23-2001 (China)

Dependable Measuring Results

• High accuracy due to differential optical absolute velocity encoder
• Measurement inherently independent of impact direction, meaning no corrections necessary
• Built-in correction for carbonation and form factor gives increased test accuracy and dependability of test results
• Registration of true rebound coefficient yields extended resolution across a wider range
• SilverSchmidt can also display the classic R-value

Controlled and Extended Functionality

• Automatic control of functionality by monitoring impact energy
• Low power consumption, high capacity lithium-ion battery
• Tightly sealed instrument providing a higher number of impacts without servicing

Applications


• Suitable for testing a wide variety of concrete, mortar, rock, paper and plastics
• Ideally suited for on-site testing
• Handy for difficult to access or confined test areas (i.e. working overhead)
• Especially convenient for testing on tunnel linings as measurements are independent of impact direction

 

Operation

• Simple operation with the one button user interface
• Language independent through the use of graphic user interface
• Automatic conversion to the required measurement unit (N/mm2, kg/cm2, psi),
• Various statistics to comply with standards or user specified procedures
• Custom pre-sets of test parameters for various testing scenarios can be stored and later recalled
• Quick review of previous measurements

Determine the Compressive Strength

To obtain a reading in units of compressive strength select:
• Desired unit
• Length of series and averaging mode
• Carbonation depth (if applicable)
• Conversion curve for concrete mixture
• Form factor


Perform a test series of specified length. Manual cancellation of obvious outliers is possible. At the end of the series, the instrument will display the average converted to the desired unit.

Features

  • Measurement inherently independent of impact direction, meaning no directional corrections are necessary
  • High measuring accuracy due to differential optical absolute velocity encoder
  • 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 170 N/mm2, 24’650 psi)
  • Simple operation with one-button, combined with advanced tilt and twist technology user interface
  • Language independent graphical menu with symbols
  • Automatic conversion to the required measurement unit (N/mm2, kg/cm2, psi)

Applications

  • Suitable for testing a wide variety of concrete, mortar and rock
  • Ideally suited for on-site testing
  • Handy for difficult to access or confined test areas (i.e. working overhead)
  • Especially convenient for testing on tunnel linings as measurements are independent of impact direction
  • Assessment on young, soft concrete with mushroom plunger (to indicate when to remove forms or for formwork)

Product Variations

  • Type BN - Standard impact energy (2.207 Nm)
  • Type BL - Reduced impact energy (0.735 Nm)

Technical Data


Mechanical dataType BNType BL
Impact energy2.207 Nm0.735 Nm
Hammer mass115 g115 g
Spring constant0.79 N/mm0.26 N/mm
Spring extension75 mm75 mm
Housing dimensions55 x 55 x 250 mm (340 mm to tip of plunger)
Plunger dimensions (visible part)105 x ø15 mm / radius of spherical tip 25 mm
Weight600 g

 

Measuring rangesType BN and Type BL
Concrete compressive strengthBL : 5 N/mm2 to 110 N/mm2 (720 psi to 16'000 psi)
BN : 10 N/mm2 to 170 N/mm2 (1’450 psi to 24’650 psi)
BN with mushroom plunger (optional): 2 - 30 N/mm2 (290 psi to 4'400 psi)
Operating temperature0 to 50 °C
Storage temperature-10 to 70 °C

 

Electrical data
Type BN and Type BL
Display17 x 71 pixels; graphic / alphanumeric
Power consumption~13 mA measuring, ~4 mA setup and review, ~0.02 mA idle
Charger connectionUSB type B (5V, 100 mA)

 

Ordering Information

CN659

SilverSchmidt BN (black cap with impact energy of 2.207 Nm) includes:
SilverSchmidt BN with standard accessories including USB kit (USB cable and USB charger global), carrying strap, grinding stone, chalk, user manual, quick reference guide, certificate and carrying case

CN658

SilverSchmidt BL (silver cap with impact energy of 0.735 Nm) includes:
SilverSchmidt BL with standard accessories including USB kit (USB cable and USB charger global), carrying strap, grinding stone, chalk, templates, user manual, quick reference guide, certificate and carrying case


ClickClick to view a PDF file of the User Guide

A user guide is available to download from the Impact web site www.impact-test.co.uk