ASTM D6332 - 12

    Standard Guide for Testing Systems for Measuring Dynamic Responses of Carbon Monoxide Detectors to Gases and Vapors

    Active Standard ASTM D6332 | Developed by Subcommittee: D22.05

    Book of Standards Volume: 11.07


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    Significance and Use

    This guide provides information on testing systems and their components used for measuring responses of CO alarms or detectors subjected to gases, vapors, and their mixtures. Components of a testing system include a chamber, clean air supply module, humidification module, gas and vapor delivery module, and verification and control instrumentation.

    The CO detector is tested by sequential exposure to CO and interference gases at the specified challenge concentrations. A properly functioning alarm/detector will sound upon sufficient exposure to CO but will not sound upon any exposure to interference gases consistent with applicable standards (for example, IAS 6-96 (1) , UL 2034).

    1. Scope

    1.1 This guide describes testing systems used for measuring responses of carbon monoxide (CO) alarms or detectors subjected to gases, vapors, and their mixtures.

    1.2 The systems are used to evaluate responses of CO detectors to various CO concentrations, to verify that the detectors alarm at certain specified CO concentrations, and to verify that CO detectors do not alarm at certain other specified CO concentrations.

    1.3 The systems are used for evaluating CO detector responses to gases and vapors that may interfere with the ability of detectors to respond to CO.

    1.4 Major components of such a testing system include a chamber, clean air supply module, humidification module, gas and vapor delivery module, and verification and control instrumentation.

    1.5 For each component, this guide provides a comparison of different approaches and discusses their advantages and disadvantages.

    1.6 The guide also presents recommendations for a minimum configuration of a testing system.

    1.7 UnitsThe values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.8 This guide does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For more specific safety precautionary information, see 6.2.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1193 Specification for Reagent Water

    D1356 Terminology Relating to Sampling and Analysis of Atmospheres

    D1945 Test Method for Analysis of Natural Gas by Gas Chromatography

    D3162 Test Method for Carbon Monoxide in the Atmosphere (Continuous Measurement by Nondispersive Infrared Spectrometry)

    D3195 Practice for Rotameter Calibration

    D3249 Practice for General Ambient Air Analyzer Procedures

    D3687 Practice for Analysis of Organic Compound Vapors Collected by the Activated Charcoal Tube Adsorption Method


    ICS Code

    ICS Number Code 13.040.99 (Other standards related to air quality)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard

    DOI: 10.1520/D6332-12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D6332-12, Standard Guide for Testing Systems for Measuring Dynamic Responses of Carbon Monoxide Detectors to Gases and Vapors, ASTM International, West Conshohocken, PA, 2012, www.astm.org

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