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.
Contact Person : Hu
Phone Number : 010-82600228

Digital High Contrast Oled Display Concrete Test Hammer Automatic Calculating

Place of Origin Beijing
Brand Name SADT
Certification CE , ISO9001
Model Number HT-225D
Minimum Order Quantity 1pc
Price USD200-1000/Pcs
Packaging Details Standard package
Delivery Time Within 3 days after receiving payment
Payment Terms T/T in advance, Western Union
Supply Ability 50pcs/week

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Product Details
Testing Range 10-100N/mm2 Memory 4000 Data
Key Words Integrated Rebound Hammer Power Supply 3.7V Li-ion Rechargeable Battery Charged Via USB Port
Dimension (mm) 280x75x60 Net Weight 1.1kg
Warranty 1 Year
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Product Description

HT-225D Integrated Rebound Hammer OLED Display with Software to PC





HT225D Digital Rebound Apparatus has the following characteristics: integrated design, small in size; adopt non-contact optical coupler sense to realize data collection, without changing the original physical structure of mechanical rebound apparatus, in which way the optical coupler sensor has no contact nor friction with the mechanical part of rebound apparatus and thus its service life is extended; inside of the apparatus, national curve and local curve are provided, can be set optionally by yourself; angle, tested surface, pumping or not, carbonization depth and other parameters can be set on site; after detecting data of original value, the original rebound value, testing zone strength value, component overall strength value and other data of the completed component can be checked immediately; self-contained access control further reflects the fairness and safety of the test; equipped with USB data transmission interface, able to transfer data to computer; computer software saves the test data as Excel format, and reporting format can be created immediately, simple and convenient for the later software process; memory space of original data are as much as 1000 components.




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



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


Standard package


HT-225D main unit 1
Grinding wheel 1
USB cable 1
USB charger 1
Software CD 1
Operation manual 1
Carrying case 1