UL 2075
Standard for Gas and Vapor Detectors and Sensors

DETAILS
Edition Number:2SCC Approved:--
Edition Date:2013-03-05DOD Approved: --
Price Code:BANSI Approved: 2013-03-05
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover toxic and combustible gas and vapor detectors and sensors intended to be portable or employed in indoor or outdoor locations in accordance with the National Electrical Code, NFPA 70. A gas detector and/or sensor and/or vapor detector, as covered by these requirements, consists of an assembly of electrical components coupled with a sensing means inside a chamber, or by separate components to detect toxic and/or combustible gases or vapors. The detector includes provision for the connection to a source of power and signaling circuits.

    1.2 These requirements cover the following types of detectors:

    a)    Detectors intended for monitoring the environment and detectors intended for open area protection and for connection to a compatible power supply or control unit for operation as part of gas detection or emergency signaling systems;

    b)    Detectors intended solely for control of ventilation or shut off devices such as fans or control valves;

    c)    Detectors intended for both the above applications;

    d)    Sensors and sensing circuits intended for use with or in gas detectors, alarms or gas detection circuits within fuel cell systems;

    e)    Portable gas detectors;

    f)    Multi-gas gas detectors;

    g)    Multi-gas sensors and

    h)    Equipment intended for use in hazardous locations. Note, the equipment must comply with the applicable hazardous location requirements prior to evaluation to UL 2075.

    1.3 These requirements also cover all remote accessories that are intended to be connected to a gas or vapor detector and/or sensor.

    1.4 This standard does not cover the following:

    a)    Control units to which the detectors are intended to be connected that are covered by the Standard for Control Units for Fire-Protective Signaling Systems, UL 864;

    b)    Control units to which the detectors are intended to be connected that are covered by the Standard for General Purpose Signaling Devices and Systems, UL 2017;

    c)    Self-contained single and multiple station carbon monoxide alarms or residential combustible gas detectors, not intended for connection to a system control unit, that are covered by the Standard for Single and Multiple Station Carbon Monoxide Alarms, UL 2034 or Residential Gas Detectors, UL 1484;

    d)    Automatic flammable vapor sensor systems and components covered by the Standard for Automatic Flammable Vapor Sensor Systems and Components, Z21.94/CSA 6.3.

    1.5 Users of these requirements will additionally need to ensure that influencing factors not addressed in this standard for the end product installation, such as mechanical movement, field placement of conductive material, and product damage, will not affect the system for insulation coordination or performance operation. Examples are the deformation of the enclosure, movement of the fittings for conduit or armored cable, or the improper installation of field wiring.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Units of measurement
            • 2.3 Undated references
          • 3 Glossary
          • 4 Alarm, Sensor and/or Detector Reliability Prediction
          • 5 Installation and Operating Instructions
          • 6 Compatibility
        • CONSTRUCTION
          • ASSEMBLY
          • 7 General
            • 7.1 Remote access
            • 7.2 Sensitivity indicating means
          • ALL PRODUCTS
          • 8 General
          • 9 Enclosure
            • 9.1 General
            • 9.2 Metallic material
            • 9.3 Polymeric materials
            • 9.4 Sensitivity adjustment
            • 9.5 Supplementary signaling feature
            • 9.6 Sharp edges
            • 9.7 Ventilating openings
            • 9.8 Covers
            • 9.9 Battery Removal Indicator
            • 9.10 Transparent panels
            • 9.11 Accessibility of uninsulated live parts, film-coated wire, and moving parts
          • 10 Spacings
            • 10.2 PCBA Clearance A (Equivalency)
            • 10.3 PCBA Clearance B (Controlled Overvoltage)
            • 10.4 Pollution degree
            • 10.5 Switching test
          • 11 Corrosion Protection
        • WIRING
          • 12 Permanent Connection
            • 12.1 General
            • 12.2 Field-wiring compartment for hazardous voltage connection
            • 12.3 Field-wiring terminals
            • 12.4 Field-wiring leads
            • 12.5 Grounded supply terminals and leads
            • 12.6 Internal Wiring
            • 12.7 Field-wiring connections (carbon monoxide detectors)
          • 13 Servicing Protection
            • 13.1 General
            • 13.2 Trained service personnel
        • PERFORMANCE
          • ALL PRODUCTS
          • 14 General
          • 15 Sensitivity requirements
            • 15.6 Calibration
            • 15.7 Test equipment
            • 15.8 Selectivity
          • 16 Sensitivity requirements
          • 17 Electrical Supervision Test
            • 17.1 General
            • 17.2 AC powered units
            • 17.3 Battery powered units
            • 17.4 Component failure
            • 17.5 External wiring
          • 18 Strain Relief Tests
            • 18.1 Cord-connected products
            • 18.2 Field-connection leads
          • 19 Circuit Measurement Test
            • 19.1 Current input
            • 19.2 Battery trouble voltage determination
          • 20 Electric Shock Current Test
          • 21 Overvoltage Test
          • 22 Undervoltage Test
          • 23 Drop Test
          • 24 Dust Test
          • 25 Static Discharge Test
          • 26 Replacement Test, Head and Cover
          • 27 Jarring Test
          • 28 Flooding with Undiluted Gas Test
          • 29 Variable Ambient Temperature Test
            • 29.1 Operation in high and low ambient
            • 29.2 Effect of shipping and storage
          • 30 Humidity Testing
            • 30.1 General
            • 30.2 High humidity (non-condensing) test
            • 30.3 Low humidity test
          • 31 Leakage Current Test
          • 32 Transient Tests
            • 32.1 General
            • 32.2 Supply line (hazardous-voltage) transients
            • 32.3 Internally induced transients
            • 32.4 Extraneous transients
            • 32.5 Supply line (extra-low-voltage) circuit transients
          • 33 Stability Tests
            • 33.1 General
            • 33.2 Air Velocity Variation
            • 33.3 Pressure
          • 34 Temperature Test
          • 35 Abnormal Operation Test
          • 36 Overload Test
            • 36.1 Control Panel, Detector or Alarm
            • 36.2 Separately energized circuits
          • 37 Endurance Test
          • 38 Burnout Test
          • 39 Power Supply Tests
          • 40 Tests of Thermoplastic Materials
            • 40.1 General
            • 40.2 Accelerated air-oven aging test
            • 40.3 Flame test (3/4 inch)
            • 40.4 Flame test (5 inch)
          • 41 Class 2 and Class 3 Power-Limited Circuits Test
            • 41.1 General
            • 41.2 Maximum voltage
            • 41.3 Maximum current
          • 42 Dielectric Voltage-Withstand Tests
          • 43 Dielectric Voltage-Withstand Testing in lieu of measuring clearances
          • 44 Mechanical Strength Tests for Metal Enclosures and Guards
          • 45 Corrosion Tests
            • 45.1 Corrosion Test – 21 Day
            • 45.2 Corrosion (Salt Spray) Test
            • 45.3 Corrosion Test (10 day) (Alternative to the 21 Day Test, See )
            • 45.4 10 Day Corrosion – Test equipment
          • 46 Vibration Tests
          • 47 Battery Tests
            • 47.8 Battery Replacement Test
            • 47.9 Sensor Replacement Test
          • 48 Audibility Test
            • 48.1 General
            • 48.2 Sound output measurement
            • 48.3 Alarm duration test
            • 48.4 Supplementary remote sounding appliances
          • 49 Field Service TestsSection 49 effective March 5, 2015
            • 49.1 Go/No-Go field test (carbon monoxide detectors)
        • MARKING AND INSTRUCTIONS
          • 50 Marking
            • 50.1 General
            • 50.2 Permanence of marking
          • 51 Installation Wiring Diagram
        • MANUFACTURING AND PRODUCTION TESTS
          • 52 General
          • 53 Sensitivity Calibration Tests
          • 54 Measurement of In-Service Reliability
            • 54.1 In-service reliability
            • 54.2 Sample frequency and sample size
            • 54.3 Test results and record keeping
          • 55 Production Line Dielectric Voltage-Withstand Tests
          • 56 Production Line Grounding Continuity Tests
          • 57 Audibility Test
          • 58 Alarm Shipment
    • RELIABILITY AND FAILURE RATE DETERMINATION INFORMATION
    • Appendix – MANUFACTURING AND PRODUCTION TESTS