Product Gallery: Humboldt Mfg. Co. Penetrometers for Asphalt and Material Testing

Humboldt Mfg. Co, Elgin, Illinois, manufacturers and offers penetrometers for asphalt binder testing. They are used extensively in asphalt binder evaluations, and other bituminous materials, cement, mortar, petrolatum, waxes, as well as food, cosmetics and pharmaceutical products, according to the manufacturer. They come in three designs, in addition to a lighter, smaller portable penetrometer.

The H-1200 Universal Penetrometer 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 40-mm 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 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 button push and automatically stops at the pre-set time duration.

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

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

For more information, call (800) 544-7220.