Sensor e.g. soot particle sensor, function testing device, has evaluation device comparing and/or correlating measurement results of current measuring device with measurement result of ionization current measuring device

摘要

The device has a current measuring device (8) connected with a sensor or a pipe (7) to be tested, in an electrically conductive manner. An evaluation device (9) compares and/or correlates measurement results of the current measuring device with a measurement result of an ionization current measuring device (4) so as to determine function and transmission characteristics of the sensor and/or pipe to be tested. An ionization device (1) loads a testing material (3) contained in a carrier gas flow (2). An independent claim is also included for a method for examination of the function of a sensor and/or the transmission characteristics of particles through a pipe.