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CSA Group , 11/01/2020
Publisher: CSA
File Format: PDF
$223.00$447.00
CSA C22.2 NO. 62990-1:20 PDF
Preface:
This is the first edition of CSA C22.2 No. 62990-1, Workplace atmospheres — Part 1: Gas detectors — Performance requirements of detectors for toxic gases, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 62990-1 (first edition, 2019-06). It is one in a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code.
This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
Scope:
This part of IEC 62990 specifies general requirements for design, function and performance, and describes the test methods that apply to portable, transportable, and fixed equipment for the detection and concentration measurement of toxic gases and vapours in workplace atmospheres and other industrial and commercial applications.
This document is applicable to continuously sensing equipment whose primary purpose is to provide an indication, alarm and/or other output function the purpose of which is to indicate the presence of a toxic gas or vapour in the atmosphere and in some cases to initiate automatic or manual protective action(s). It is applicable to equipment in which the sensor generates an electrical signal when gas is present.
This document applies to two types of equipment:
In general, the requirements for accuracy will be higher for Type HM equipment than for Type SM equipment. The same equipment may meet the requirements of both Type HM and Type SM.
For equipment used for sensing the presence of multiple gases this document applies only to the detection of toxic gas or vapour.
This document is not applicable to equipment:
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