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To test pulse tools you must have a tester that will sample at a rate fast enough to read the quick peaks generated by pulse tools, in addition you must have a tester that will allow you to filter out noise generated by these fast torque peaks. The TS-1000 can meet both these needs. Pulse tools, like nut runners, have internal mechanisms, gears and motors that rotate. Because of inertia, the torque output of these tools may and probably will vary depending on the type of fastened "joint" that the tool is tightening. "Hard" joints allow the tool to rotate freely and then "slam" to a stop when the fastener is tight. "Soft" joints will tend to slow the tool down as the joint compresses under load. An example of a hard joint is two plates of steel held together with a nut and bolt. An extreme example of a soft joint would be two pieces of wood held together with a nut and bolt. The wood compresses as the joint tightens and tends to slow the tool down possibly resulting in a different torque output. In order to accurately test the tool on any tester you must simulate the joint characteristics, where the tool will be used, during the test. This results in the need for a "joint rate simulator". If you do not use a joint rate simulator you may get results that do not match the actual torque applied in a real world application. Joint rate simulators usually employ the use of springs to simulate the joint. To test the tool use a bench mount transducer, a joint rate simulator and the TS-1000. Place the meter in peak mode, and test the tool. The proper filter will also depend on the joint rate but 2500 Hz should work for most tools.
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JETCO 626-359-2881 Fax: 626-359-8315 www.itorque.com |