By means of rotational speed of a simulator / tester for rotational speed sensors and safety switches at internal combustion engines

摘要

Testing device for testing of about speed protection devices and safety switches of internal combustion engines, characterized in that a of an internal combustion engine (5) and coming from a is - rotational speed of the internal combustion engine (5) - frequency signal at the outset, which is measured and converted in the testing device (1) stored freely programmable variable, - values is compared, in its frequency that a variable output - frequency signal is output, and that the initially - frequency signal and the output - frequency signal are compared, and the signal with the higher frequency to a speed of rotation protection device or safety switch (6) of the internal combustion engine (5) is sent.