Overview: The document provides detailed information about James Concrete Test Hammers, both digital and manual, used for determining the strength of concrete. These tools are essential for quick and easy strength estimation in various construction applications.
Features and Benefits:- Manual Model W-M-250: Offers easy manual calculation of the mean rebound number.
- Manual Model W-M-350: Includes a built-in automatic chart recorder that records each test on chart paper, providing a visual and documented record of tests.
- All models conform to ASTM C-805, BS-1881 #202, and other international standards, ensuring reliability and accuracy.
Application: These hammers are used for rapid estimation of concrete strength, making them valuable tools in construction and engineering fields.
Calibration: Regular calibration is recommended after approximately 2000 strokes using the Calibration Anvil Model W-C-7312, which weighs about 35 lbs (16 kg) and is sold separately.
Specifications:- Impact Energy: All test hammers have an impact energy level of 1.6 ft. lbs. (0.225 kgn).
- W-M-250: Weighs 2 lbs (0.9 kg), with dimensions of 10 1/2” (267mm) with plunger retracted. Shipping weight is 6 lbs (2.7 kg).
- W-M-350: Weighs 3.2 lbs (1.4 kg), with dimensions of 5” x 3” x 14” (127 x 76 x 355mm). Shipping weight is 6 lbs (2.7 kg).
Technical Specifications: The W-M-350 model provides the same quality as the W-M-250 but includes a chart recorder for automatic recording of tests, with each paper roll capable of recording over 4000 tests.
Sales Information: The document lists sales numbers for the W-M-350 Manual Recording Test Hammer, W-M-250 Manual Rebound Hammer, and W-C 7312 Test Anvil.
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