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Automatic Digital Bitumen Penetrometer


The TB-0126 Automatic Electronic Penetrometer is used for determination of the needle penetration according to EN 1426, ASTM D5 and AASHTO T49 standards. The penetration depth of the needle is determined with a pulse type electronic measuring system, which is separated from the plunger during the test, this allows the free guidance of the plunger which virtually eliminates friction during the test.

Before the start of each test the measuring system automatically resets, and then the penetration needle moves down to the sample by using the electric drive, the needle position can be finely adjusted by using the joystick located on the front panel. A magnifying glass and an ultra- bright LED lamp are supplied to assist the operator; the plunger is then automatically released onto the sample and raised automatically after the testing period. The test result is displayed on the digital display. The needle holder can easily be removed to calibrate its weight.

A water bath (TGE-4000 or TGE-4050) and a thermometer (IP38, ASTM 17C or 63C) required for the test should be ordered separately.


  • EN 1426
  • ASTM D5
  • AASHTO T49

The Automatic Electronic Penetrometer is supplied complete with:

  • Penetration Needle, 1 pcs.
  • Needle Holder
  • Weights of 50g and 100g
  • Transfer Dish
  • Sample Cup, Ø 55 x 35 mm, 6 pieces, stainless steel


Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

TGP-0121 Transfer Dish for TAS-0120
TB-0122 Sample Cup, Ø55 x 35mm, stainless steel
TB-0123 Sample Cup, Ø70 x 45mm, stainless steel
TB-0124 Penetration Needle, 2.5g
TB-0160 One-Quarter Scale Cone and Shaft, ASTM D1403, ASTM D1831 for TB-0120 and TB-0126
TB-0161 One-Half Scale Cone and Shaft, ASTM D1403, ASTM D1831 for TB-0120 and TB-0126


Technical specifications are subject to change without notice.

Measuring Range mm 0-50
Resolution mm 0.01
Total Test Load 100g or 200g (plunger 97.5 g + 2.5 g penetration needle)
Test Loading Time 5 seconds (Adjustable from 0.1 to 9999 sec.)
Dimensions mm (W x D x H) 270 x 480 x 750
Weight (approx.) Kg 24
Power W 75