for Asphalt Penetration Testing


Humboldt Penetrometers
Humboldt’s penetrometers for asphalt binder testing are known for their durability, precision and economical design. These penetrometers are used extensively in asphalt binder evaluations, and other bituminous materials, cement, mortar, petrolatum, waxes, as well as food, cosmetics and pharmaceutical products. Their simple and easy-to-use design, provide years of dependable service in labs around the world.

Humboldt penetrometers come in 3 designs:
The H-1200 - Universal Penetrometer
This unit provides a basic precision penetrometer function with its 5-inch diameter, dial indicator, which is graduated in 400 divisions of 0.1mm, corresponding to a 40mm penetration reading. It provides a zero preset for eliminating reading errors. A large variety of penetration needles are available to accommodate any type of penetration testing.

The H-1240 - Electric Penetrometer
This unit builds on the basic design by adding an automatic, digital timer. The timer’s release mechanism is switchable between seconds, minutes and hours and accommodates setting to 1/10th of a second intervals. The penetrometer’s plunger is released with a simple button push and automatically stops at the preset time duration.

The 1240DA - Digital Penetrometer
This unit incorporates a digital gauge for the penetrometer, as well as an auto, digital timer. The use of a digital timer and gauge provides accurate timing of tests with an auto stop feature, as well as precise, at-a-glance readings during and at the end of the a test.

All three of these Humboldt Penetrometers can accommodate any needle or cone plunger that has a 1-1/8th in. (3mm) diameter stem. All three feature a 47.5g plunger assembly, two additional loading weights (50g and 100g) and a standard 2.5g ASTM D 5 needle.

Humboldt also has a Portable Penetrometer, which is lighter and smaller than the other penetrometers.

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