McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    24 Products

    Portable Multi-Gas Detectors

    Image of Product. Front orientation. Multi-Gas Detectors. Portable Multi-Gas Detectors.
    When these detectors sense high levels of combustible and toxic gases, they alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger points to suit your environment. There is also a motion sensor that sounds an alarm if the user becomes disabled.
    A calibration check must be performed on detectors before each use to verify that they are working properly. The check requires a regulator and cylinder (sold separately).
    Note: LEL is lower explosive limit.
    Detects (Measuring Range)
    Volume (Sound)
    @ Distance
    Temp. Range,
    ° F
    Batteries
    Included
    Hazardous Location Rating
    Enclosure
    Rating
    Each
    Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (Methylbenzene) (0% to 100% LEL)
    Oxygen (0% to 30% Vol.)
    Carbon Monoxide (0 ppm to 1,999 ppm)
    Hydrogen Sulfide (0 ppm to 200 ppm)
    95 dBA @ 30 cm-40 to 140YesNEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Groups E, F, G
    NEC Class III Divisions 1, 2
    NEC Zone 0 Groups IIC, IIB, IIA
    AEx Da Ia IIC T4 Ga
    Ex Da Ia IIC T4 Ga
    IP68
    18995T42000000000
    Accessories for Multi-Gas Detectors

    Oxygen Detectors

    Image of Product. Front orientation. Oxygen Detectors.
    When your work area has too much or too little oxygen, these detectors alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the high and low alarm trigger points to suit your environment.
    A calibration check must be performed on the detector before each use to verify that it is working properly. The check can be performed with the press of a button.
    Detectors with Nonreplaceable Battery—The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
    Oxygen Detectors
    Batteries
    Oxygen Volume Percent
    Concentration Measured
    Volume (Sound)
    @ Distance
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Batteries
    Included
    Battery
    Chemistry
    Hazardous Location Rating
    Enclosure
    Rating
    Each
    Pkg.
    Qty.
    Pkg.
    Detectors with Nonreplaceable Battery
    0% to 25%95 dBA @ 30 cm3 1/2"2"1"-4 to 122YesLithiumNEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Group G
    NEC Zone 0 Groups IIC, IIB, IIA
    IEC Zone 1 Groups IIC, IIB, IIA
    AEx Ia IIC T4
    ATEX II 2 G Ex Ia IIC T4 Gb
    IECEx Ex Ia IIC T4
    IP67
    18995T810000000———0
     
    Detectors with Replaceable Battery
    0% to 25%95 dBA @ 30 cm3 1/2"2"1"-4 to 122YesLithiumNEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Group G
    NEC Zone 0 Groups IIC, IIB, IIA
    IEC Zone 0 Groups IIC, IIB, IIA
    AEx Ia IIC T4
    ATEX II 1 G Ex Ia IIC T4 Ga
    ATEX II 2 G Ex Ia IIC T4 Gb
    IECEx Ex Ia IIC T4
    18995T9200000017821K7200000
     

    Portable Multi-Gas Detectors with Probe

    Image of Product. Front orientation. Multi-Gas Detectors. Portable Multi-Gas Detectors with Probe.
    Use the probe on these detectors to test the air in a hazardous area before entering. Great for confined spaces. Detectors alert you with an audible alarm, warning light, and vibrating alarm in the presence of combustible and toxic gases. You can adjust the alarm trigger points to suit your environment. There is also a motion sensor that sounds an alarm if the user becomes disabled.
    A calibration check must be performed on these detectors before each use to verify that they are working properly. The check requires a regulator and cylinder (sold separately).
    Note: LEL is lower explosive limit.
    Detects (Measuring Range)
    Volume (Sound)
    @ Distance
    Temp. Range,
    ° F
    Batteries
    Included
    Includes
    Tube Lg.,
    ft.
    Hazardous Location Rating
    Enclosure
    Rating
    Each
    Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (Methylbenzene) (0% to 100% LEL)
    Oxygen (0% to 30% Vol.)
    Carbon Monoxide (0 ppm to 1,999 ppm)
    Hydrogen Sulfide (0 ppm to 200 ppm)
    95 dBA @ 30 cm-40 to 140YesSampling Probe, Tubing Assembly, Battery25NEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Groups E, F, G
    NEC Class III Divisions 1, 2
    NEC Zone 0 Groups IIC, IIB, IIA
    AEx Da Ia IIC T4 Ga
    Ex Da Ia IIC T4 Ga
    IP68
    18995T44000000000
    Accessories and Replacements for Multi-Gas Detectors

    Portable Carbon Monoxide Detectors

    Image of Product. Front orientation. Carbon Monoxide Detectors. Portable Carbon Monoxide Detectors.
    When these detectors sense high levels of carbon monoxide, they alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger point to suit your environment.
    A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator, tubing, and cylinder (sold separately).
    Nonreplaceable Batteries—The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
    Carbon Monoxide Concentration
    Measured, ppm
    Volume (Sound)
    @ Distance
    Temp.,
    ° F
    Ht.
    Wd.
    Dp.
    Batteries
    Included
    Certification
    Hazardous Location Rating
    Enclosure
    Rating
    Each
    Nonreplaceable Batteries
    0 to 50095 dBA @ 30 cm-4 to 1223 1/2"2"1"YesCSA-US Certified
    CSA Certified
    CE Marked
    NEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Group G
    NEC Zone 0 Groups IIC, IIB, IIA
    IEC Zone 1 Groups IIC, IIB, IIA
    IECEx Ex Ia IIC T4
    ATEX II 2 G Ex Ia IIC T4 Gb
    AEx Ia IIC T4
    IP67
    18995T830000000
     
    Replaceable Batteries
    0 to 2,00095 dBA @ 30 cm14 to 1043 1/2"2"1"YesCSA-US Certified
    CSA Certified
    CE Marked
    NEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Groups E, F, G
    NEC Class III Divisions 1, 2
    IEC Zone 0 Groups IIC, IIB, IIA
    IECEx Ex Ia IIC T4 Ga
    ATEX II 1 G Ex Ia IIC T4 Ga
    IP67
    18995T15000000
     
    Accessories and Replacements for Carbon Monoxide Detectors

    Stick-On Carbon Monoxide Indicators

    Image of Product. Front orientation. Carbon Monoxide Detectors. Stick-On Carbon Monoxide Indicators.
    Place this indicator anywhere you need to detect and warn about the presence of carbon monoxide. The circle in the center darkens when carbon monoxide is detected and returns to its normal color when exposed to fresh air. Replace indicator every 12 months. An unopened indicator has a shelf life of three years.
    Trigger
    Point, ppm
    Mounting
    Profile
    Ht.
    Wd.
    Backing
    Type
    Each
    100Surface2 1/4"2 1/4"Adhesive1085T8500000
     

    Hydrogen Sulfide Detectors

    Image of Product. Front orientation. Hydrogen Sulfide Detectors.
    When these detectors sense high levels of hydrogen sulfide, they alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger point to suit your environment.
    A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator, tubing, and cylinder (sold separately).
    Nonreplaceable Batteries—The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
    Hydrogen Sulfide Concentration
    Measured, ppm
    Volume (Sound)
    @ Distance
    Temp. Range,
    ° F
    Ht.
    Wd.
    Dp.
    Batteries
    Included
    Hazardous Location Rating
    Enclosure
    Rating
    Each
    Nonreplaceable Batteries
    0 to 10095 dBA @ 30 cm-4 to 1223 1/2"2"1"YesNEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Group G
    NEC Zone 0 Groups IIC, IIB, IIA
    IEC Zone 1 Groups IIC, IIB, IIA
    IECEx Ex Ia IIC T4
    AEx Ia IIC T4
    ATEX II 2 G Ex Ia IIC T4 Gb
    IP67
    18995T850000000
     
    Replaceable Batteries
    0 to 20095 dBA @ 30 cm14 to 1043 1/2"2"1"YesNEC Class I Divisions 1, 2 Groups A, B, C, D
    NEC Class II Divisions 1, 2 Groups E, F, G
    NEC Class III Divisions 1, 2
    IEC Zone 0 Groups IIC, IIB, IIA
    IECEx Ex Ia IIC T4 Ga
    ATEX II 1 G Ex Ia IIC T4 Ga
    IP67
    18995T19000000
     
    Accessories for Hydrogen Sulfide Detectors

    Air Filter Monitors for Supplied-Air Respirators for Plant Air Lines

    Track the quality of incoming air as it travels from your air line to your respirator. These monitors display air-quality data, including carbon monoxide and water vapor levels, and sound an alarm if the air is unsafe to breathe. They also filter the air three times before it reaches you to remove oil, water, and solid particles.
    Monitors with Low-Battery Alarm
    Image of Product. Closed. Front orientation. Respirator Filter Monitors. Air Filter Monitors for Supplied-Air Respirators for Plant Air Lines, Monitors with Low-Battery Alarm, 1/2.
    Image of Product. Open. Front orientation. Respirator Filter Monitors. Air Filter Monitors for Supplied-Air Respirators for Plant Air Lines, Monitors with Low-Battery Alarm, 1/2.

    Closed

    Open

    Respirator Filter Monitor Calibration Kits—Calibration kits (sold separately) come with everything you need to test the accuracy of the filter monitor, including a regulator, tubing, and fittings. The components are packed in a carrying case. Air filter monitors should be calibrated monthly to ensure they’re working properly.
    Respirator Filter Monitors
    Respirator Filter
    Monitor Calibration Kits
    Replacement
    Filters
    Overall
    For Use With
    Inlet Coupling
    Size
    Outlet Coupling
    Size
    Max. Flow Rate
    @ Pressure
    Max. Pressure,
    psi
    Pressure Regulation
    Range, psi
    Regulating
    Accuracy
    Wd.
    Ht.
    Max. Temp.,
    ° F
    Battery
    Type
    Batteries
    Included
    Battery
    Size
    No. of Batteries
    Req.
    Cord Lg.,
    ft.
    Each
    Each
    Each
    Plastic Housing
     
    Quick-Disconnect Male Inlet × Quick-Disconnect Female Outlet
    Solid Particles, Oil, Water1/21/415 ft³/min @ 100 psi1500 to 160±1 psi19"13"120DisposableNoAA8106793N170000000006793N1300000006793N120000000
     
    Monitors with Data Logging Capabilities and Low-Battery Alarm
    Image of Product. Closed. Front orientation. Respirator Filter Monitors. Air Filter Monitors for Supplied-Air Respirators for Plant Air Lines, Monitors with Data Logging Capabilities and Low-Battery Alarm.
    Image of Product. Open. Front orientation. Respirator Filter Monitors. Air Filter Monitors for Supplied-Air Respirators for Plant Air Lines, Monitors with Data Logging Capabilities and Low-Battery Alarm.

    Closed

    Open

    Monitors with data-logging capabilities record air-quality data and calibration results onto a removable USB drive. Download your data from the USB for compliance reports and recordkeeping. They have a large color screen to easily view the quality and status of air as it flows through the filter. When it is time to calibrate the filter monitor, the screen gives clear, step-by-step instructions.
    Respirator Filter Monitor Calibration Kits—Calibration kits (sold separately) come with everything you need to test the accuracy of the filter monitor, including a regulator, tubing, and fittings. The components are packed in a carrying case. Air filter monitors should be calibrated monthly to ensure they’re working properly.
    Respirator Filter Monitors
    Respirator Filter
    Monitor Calibration Kits
    Replacement
    Filters
    Overall
    For Use With
    Inlet Coupling
    Size
    Outlet Coupling
    Size
    Max. Flow Rate
    @ Pressure
    Max. Pressure,
    psi
    Pressure Regulation
    Range, psi
    Regulating
    Accuracy
    Wd.
    Ht.
    Max. Temp.,
    ° F
    Battery
    Type
    Batteries
    Included
    No. of Batteries
    Req.
    Cord Lg.,
    ft.
    Each
    Each
    Each
    Plastic Housing
     
    Quick-Disconnect Male Inlet × Quick-Disconnect Female Outlet
    Solid Particles, Oil, Water1/41/415 ft³/min @ 100 psi1500 to 160±1 psi18 1/2"13"100RechargeableYes176793N140000000006793N1500000006793N160000000
     
    back to top