Good Day List, I am trying to determine what tests apply under the EMC directive to a piece of chemistry lab equipment. The device is a small table-top "agitator" to mix up containers of "goop". (note my chemistry terminology is limited.)
The device in question has a variable speed 24VDC motor controlled by pulse width modulation. The PWM chopper operates around 20 kHz. The device plugs into a wall outlet (120VAC or 240VAC) There are no microprocessors, or any digital electronics in the device. My experience has been in ITE testing, using the ITE emissions standard and the Generic Immunity Standard. I expect the Generic standards (emissions & immunity) would apply to the "goop mixer". Does this sound correct? Does the Generic emissions standard essentially boil down to EN 55022? I suspect this last question may be slightly controversial: Assuming that EN 55022 applies, would this be a Class A or Class B device? The device is sold only to educational / research facilities, not the general public. Any opinions would be most appreciated. Thanks in advance, Bob Sykes
