CSA Group Process Control Equipment C22.2 NO. 142-M1987 (R2014)

Preface This Standard was reaffirmed in 2009 for likely the last time. Plans call for withdrawal of this standard soon. CSA will soon cease to certify to 142. All certifications for this category are now performed to standards in the 61010 series. A customer wishing to purchase this document should be told of this and be encouraged to buy the appropriate 61010 series document instead. Scope 1.1 This Standard applies to fixed equipment or accessories, or both, that utilizes signals to measure or control directly or indirectly an industrial process through a final control device (or devices) and is intended to be connected to supply circuits with voltages of 750 V and less, for use indoors or outdoors in nonhazardous locations in accordance with the Canadian Electrical Code, Part I. Note: Some examples of equipment covered by this Standard are analogue and digital equipment such as indicating, integrating, and recording instruments, with or without a control function, as well as transmitters, transducers, analyzers, telemetry equipment, and programmable controllers. 1.2 This Standard does not apply to research and scientific lab oratory equipment or equipment covered by other CSA Standards.