Paul Frame
    Thank you very much for all your help regarding the SADT Concrete Hammer and hardness tester which are working well and we are very pleased with it.
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Phone Number : 010-82600228

Automatic Correction Of Impact Direction Schmidt Concrete Test Hammer

Place of Origin Beijing
Brand Name SADT
Certification CE ISO9001
Model Number HT-225D / HT-75D / HT-20D
Minimum Order Quantity 1pc
Price USD300-800/Pcs
Packaging Details carrying case
Delivery Time Within 3 days after receiving payment
Payment Terms T/T in advance, Western Union,paypal
Supply Ability 50pcs/week

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Product Details
Testing Range 10-100N/mm2 Memory 4000 Data
Key Words Schmidt Hammer Storage 1000 Parts, 256 Data For Each Part
Operating Temperature -40º-60ºC Power Supply 3.7V Li-ion Rechargeable Battery Charged Via USB Port
Dimension (mm) 280x75x60 Net Weight 1.1kg
Display OLED
High Light

high contrast schmidt concrete test hammer


integrated schmidt concrete test hammer


integrated schmidt rebound hammer

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Product Description

Integrated Digital Schmidt Hammer HT-225D with optional microprinter





HT-225D is is specifically applicable to the on-site quality sampling inspection by Engineering Quality Supervision Institutions and Supervising Units, for the compressive strength test result of the inspected concrete structure can be got immediately; when the Construction Quality Testing Institution carries out on-site test for real construction objects, it can further reflect the fairness, scientificity and accuracy of the test, greatly improving the working efficiency of testing, data processing and inspection report formation.


Structure of Concrete Test Hammer

The Concrete Test Hammer is mainly composed of flip system, value-indicating system and shell component.Its structure is shown in Fig.1. The diagram shows the state that the impact hammer has finished impact in the test and the pushbutton has locked the movement,ie.retaining state of resilience value.


      Automatic Correction Of Impact Direction Schmidt Concrete Test Hammer 0


Key features


High contrast OLED display

All setup can be made on site

Automatic calculating compressive strength

Automatic correction of impact direction

All data will be stored in memory

All data can be transferred to PC by USB cable or blue tooth(optional)

Dual display for analogue ruler and digital value




Model HT-225D HT-75D HT-20D
Display OLED digital
Measuring range 10-100N/mm2 1-25N/mm2
Accuracy ±0.1R
Impact energy 0.225kgm (2.207Nm)for testing ordinary building and bridge construction 0.075kgm (0.735Nm)for testing small and impact-sensitive parts of concrete or artificial brick 0.020kgm (0.196Nm)for testing mortal or clay of products
Communication USB2.0 or Bluetooth(optional)
Storage data for 4000 concrete structures
Operating temperature -40º-60ºC
Power supply 3.7V Li-ion rechargeable battery charged via USB port
Dimension (mm) 280x75x60
Net weight 1.1kg




.Mechanical Index of Rebound Apparatus

Metrological verification specifications : Verification Regulations of Rebound Apparatus(JJG_817-2011)
Impact energy : 0.225kgm (2.207J±0.100J), for testing ordinary building and bridge construction

Rigidity of recoiling tension spring : 785±30.0N/m
Length of pointer : 20.0±0.2mm
Friction of pointer : 0.65±0.15n
Spherical radius of recoiling rod : R25±1.0
Active length of recoiling tension spring : 61.5±0.3mm
Impact length of recoiling rod : 75.0±0.3 mm
Initial bouncing position of recoiling hammer : graduated scale“0”+1
Calibration value on steel anvil : 80±2
Graduating position “100” of shell calibration: overlap with the side of positioning gap of calibrator cover plate of the rebound apparatus.
Consistency of test indicating value : ≦±1
Operating Temperature : -4ºC-+40ºC