Models 3910 Extensometer for Creep Compliance and Tensile Strength Testing of Asphalt

Product catalog summary

Overview: The document describes the Model 3910 extensometer, designed for testing asphalt core samples with diameters of 4 and 6 inches. It meets the U.S. Federal Highways SHRP program requirements for strain measurement and is used for creep compliance, tensile strength testing, and dynamic resilient modulus testing.

Specifications: The Model 3910 features a full bridge, 350-ohm strain-gaged design compatible with most test systems. It meets ASTM class B-1 and ISO 9513, class 0.5 accuracy requirements. The extensometer has a full-scale measuring range of 0.020 inches (0.5 mm) and operates within a temperature range of -40 °C to +100 °C. It includes a flexible Teflon® cable and requires an excitation of 5 to 10 VDC, with a maximum of 12 VDC or VAC.

Features: The extensometer is easy to mount using magnets, allowing dynamic testing up to 40 Hz. It includes a high-quality foam-lined case and a rugged, dual flexure design for improved performance. The unit is compatible with electronics designed for strain-gaged transducers and can be connected to various data acquisition systems.

Options: Available options include connectors for interfacing with different test equipment, a shunt calibration module, gage length adapters, and a gluing template for gage points.

Ordering Information: The Model 3910 is available in custom gage lengths, with standard options ranging from 1.000 inches (25 mm) to 4.000 inches (100 mm). Special orders are available for specific testing requirements.

Catalog excerpts

Models 3910 Extensometer for Creep Compliance and Tensile Strength Testing of Asphalt-1

Model 3910 Available Versions: Custom gage lengths are available. Gage Length Օ DESIGNATIONGAGE LENGTH Two 3910 units mounted on asphalt test sample. 1 Special order only. Example: 3910-0100: 1.000 inch (25.4 mm) gagelength with a full scale measuring range of 0.020 inches (0.5 mm) S PECIFICATIONS Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. Output: 2 to 4 mV/V nominal, depending on model Linearity: ≤ 0.20% of full scale measuring range, dependingon model Temperature Range: Standard is -40 C to +100 аC (-40 F to +210 аF) Cable: Integral, flexible Teflon > cable, 8 ft. (2.5 m)standard Operating Force: <30 g typical > O PTIONS 3910 on one side of test sample. Connectors to interface to nearly any brand test equipment Shunt calibration module (see page 96) Gage length adapters Gluing template for gage points > 51.82.041.7644.72.0451.8 3910 WITH 1Δ GAGE LENGTH3910 WITH 1.5 GAGE LENGTH 3910 gage point gluingtemplate on sample.3910 template, specimenside. Contact Epsilon for your special testing requirements. 64.52.542.5464.51.7644.7 DIMENSIONS:[mm] inches

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