Replace the first paragraph of Clause 1 with: This part of EN 61326 is a product family standard specifying requirements for immunity and emissions regarding electromagnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of less than 1 000 V AC or 1 500 V DC or from the circuit being measured. Equipment intended for professional, industrial-process, industrial-manufacturing and educational use is covered by this part. It includes equipment and computing devices for measurement and test; control; LABORATORY use; accessories intended for use with the above (such as sample handling equipment), intended to be used in industrial and non-industrial locations.