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Руководство пользователя ADA Schmidt Hammer 225. Основные функции, характеристики и условия эксплуатации изложены на 42 страницах документа в pdf формате.
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Schmidt Hammer 225 Operating manual Test Hammer Model: Schmidt Hammer 225 Manufacturer Address: WWW. ADAINSTRUMENTS.COM
Schmidt Hammer 225 Table of contents 1. Working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Operational procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. Inspecting methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4. Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7. Exceptions from responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8. Appendix 1 - “Approximate dependence of conerete compressive strength R on the elastic rebound magnitude H” 9. Appendix 2 - “Classes, grades and concrete compressive strength communication with variation factor 13,5 %” 10. Warranty card 11. Certificate of acceptance and sale
Schmidt Hammer 225 Working principle Test hammer the stability of technical specification, reliability, consistency, rebound method for ensuring the accuracy of testing the compressive strength of concrete is essential. Therefore, the technical parameters and specification of test hammer should be standardized. Normal Impact energy is 2. 207N.m of concrete test hammer basic technical specification are as following: Normal Impact energy: 2. 207N. m (0. 225kgf. m) it is main design parameters of the instrument, when the test hammer rebound at level, bomb attack tension spring stretch length 75mm which has the kinetic energy. Although it can’t directly test Hammer kinetic energy of the instru- ments, but, through controlling the stiffness and the standard tensile length of tension spring, and related precision of the parts, may also be to control kinetic energy purposes. Strike tension spring stiffness: 7.84N (0.80kgf) /cm. Stiffness for tension spring will directly affect the nominal kinetic energy size of test hammer, usually through the spring testing machine strict inspecting the technical parameters, but also can be inspect it according to “JJG817-93” standard stated special spring testing device. Strike hammer stroke: 75mm (Namely: strike tension spring stretched the length of the standard). Generally, depend on assembly and adjusting to ensure the technical requirements. Instrument self-test method: adjust the bolt length out on the end cover, when the strike hammer shoot out (namely: unhook), the scale mark of pointer slider and scale 100 mark of rebound value graduation scale is superposition, this time the length out for strike tension spring should be 75mm. Working length of strike tension spring: 61.5mm MEASUREMENT FOUNDATION