CAN/CSA-Z431-02 (R2007)

This National Standard of Canada is equivalent to International Standard CEI/IEC 73:1996. 1 Scope This International Standard establishes general rules for assigning particular meanings to certain visual, acoustic and tactile indications in order to - increase the safety of persons, property and/or the environment through the safe monitoring and control of the equipment or process; - facilitate the proper monitoring, control and maintenance of the equipment or process; - facilitate the rapid recognition of control conditions and actuator positions. This standard is for general application: - from simple cases such as single indicator lights, push-buttons, mechanical indicators, light emitting diodes (LEDs) or video display screens to extensive control stations which may include a wide variety of devices for controlling an equipment or process; - where the safety of persons, property and/or the environment is involved, and also where the above-mentioned codes are used to facilitate the proper monitoring and controlling of equipment; - where a particular kind of cooling is to be assigned by a technical committee to a special function.