Length Comparator, Mortar/Cement Bars, 16in Effective Length
Overview
A Length Comparator is a precision device used to measure length changes in cement paste, mortar, and concrete specimens. It is designed to provide accurate and reliable measurements, making it an essential tool in various industries such as construction, engineering, and research. The device consists of a precision unit with a sensitive indicator mounted on a sturdy support stand, allowing for precise measurements of length changes in test specimens.
Description
The Length Comparator is a precise instrument used to measure length changes in cement paste, mortar and concrete specimens. Meets ASTM and AASHTO specifications for accuracy and reliability. Precision unit with sensitive indicator on a heavy duty, dual post frame for stability and support.
Specs
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Indicator Type: Digital or Dial, English or Metric units
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Reference Bar: Has a precision-machined Invar steel reference bar for exact zeroing of dial or digital indicator.
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Anvils: Stationary and movable anvils are designed to receive reference pins cast into test specimen bars.
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Support Stand: Sturdy vertical support stand with triangular base and adjustable terminal and collar.
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Power: Two standard replaceable lithium batteries or AC adapter.
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LCD Digital Display: Auto On/Off, inch and millimeter display options, internal memory for user settings.
Measurement
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Test Specimen Size: Will accept test specimens up to 4x4x10 inches (102x102x254mm) cross-section, 1x1x10 inches (25x25x254mm) prisms are standard.
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Length Changes: Measures length changes in cement paste, mortar and concrete specimens with high accuracy.
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Range: 0.6 inches (15mm)
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Accuracy: Meets ASTM and AASHTO specifications.
Measurement Capabilities
The Length Comparator is capable of measuring length changes in test specimens with a high degree of accuracy. The device features a digital or dial indicator that provides precise measurements, and the unit accommodates test specimens with a 4″ x 4″ cross section or smaller. The stationary and movable anvils are designed to fit gage studs cast into test specimens, ensuring accurate and reliable measurements. The device can measure length changes in various types of specimens, including concrete prismatic specimens, and is suitable for use in conjunction with a reference bar.
Applications with Sturdy Vertical Support Stand
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Concrete Prismatic Specimens: Measure length changes in concrete prismatic specimens for material analysis.
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Cement Paste and Mortar: Measure length changes in cement paste and mortar specimens for quality control and research.
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Research and Development: Used in the development of new materials and products.
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Quality Control: Used in the quality control of construction materials and products.
Why a Digital Indicator Length Comparator
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Accuracy: High accuracy and precision for reliable data.
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Reliability: Consistent and reliable results meet ASTM and AASHTO specs.
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Ease of Use: Easy to use, user friendly.
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Versatility: For research and development, quality control, construction, a tool for many applications.
Benefits of Using a Length Comparator
Using a Length Comparator offers several benefits, including:
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High accuracy and reliability in measuring length changes
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Precise measurements of length changes in test specimens
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Ability to accommodate test specimens with a 4″ x 4″ cross section or smaller
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Suitable for use in various industries, including construction, engineering, and research
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Easy to use and operate, with a sturdy upright support attached to a solid triangular base
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Includes an Invar reference bar for precise zeroing of the dial or digital indicator
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Can be powered by standard replaceable lithium batteries or an AC adapter, making it convenient to use in various settings
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Features a digital indicator with auto On/Off and inch and millimeter display, and internal memory to store user settings.
Meets AASHTO M210, AASHTO T107, AASHTO T160 for Concrete Prismatic Specimens
Length comparators measure length changes of hardened cement paste, mortar and concrete prismatic specimens. Indicators, including a digital indicator mounted on a sturdy upright support, are attached to a solid triangular base. All units include stationary and movable anvils designed to fit H-3260 gauge studs which are cast into test specimens and invar reference bar. Comparators for 10” (254mm) or 16” (406mm) effective length samples with 3.625” (92mm) dia. dial gauge with a range of .400” and gradations of .0001”. The Dial is marked 0-10. Includes stationary and movable anvils designed to fit the H-3260 gauge studs that are cast on test specimens and invar reference bar. Unit will accept test specimens up to 4” x 4” (102 x 102mm) cross section. Battery operated, included.
Mortar Bars Gage Studs for use with cement prism molds.
Meets:
ASTM C227, ASTM C1260, ASTM C1012/1012M, ASTM C151/151M, ASTM C157/157M, ASTM C490/490M, AASHTO R 70M/R 70, AASHTO T 107M/T 107
