Sniffers | McMaster-Carr

	Gas Type Detected Gas Type Detected

	Detects Detects

Acetone

Butane

	Detector Signal Type Detector Signal Type

Audible Alarm

Signal Light

Vibrating Alarm

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Container Type Container Type

Plastic Carrying Case

Case

Fabric Case

	Measures Measures

Combustion Efficiency

	Probe Length Probe Length

	Environment Environment

Hazardous

Dusty

Submersible

	Protection Type Protection Type

	Specifications Met Specifications Met

	Battery Chemistry Battery Chemistry

Alkaline

Lithium Ion (Li-Ion)

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Probe Type Probe Type

Sensor

Disc

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Environmental Rating Environmental Rating

NEC Class I Divisions 1, 2
Groups A, B, C, D

IEC Zone 2 Groups IIC, IIB,
IIA

IP68

NEC Class II Divisions 1, 2
Groups E, F, G

NEC Class III Divisions
1, 2

NEC Zone 0 Groups IIC,
IIB, IIA

	For Use On For Use On

	Battery Size Battery Size

	Minimum Measuring Minimum Measuring

0 ppm

0% LEL

0% Vol.

	Maximum Temperature Maximum Temperature

120° F

140° F

	Minimum Temperature Minimum Temperature

-40° F

-10° F

	Housing Material Housing Material

Plastic

Rubber

	Maximum Measuring Maximum Measuring

View catalog pages (4)

Forward

How can we improve?

18 Products

Gas Leak Detectors for Hard-to-Reach Areas

Identify a variety of small leaks quickly and access hard-to-reach areas with the flexible probe. An audible signal increases in intensity the closer you get to the leak. Intrinsically safe for Class I, Divisions I and 2, Groups A, B, C, and D hazardous locations.

Detection Trigger Point, ppm
Methane (Natural Gas)	Propane	Hydrogen	Butane	Acetone	Methanol	Ammonia	Gasoline	Chlorine	Acetylene	Ethane	Ethylene	Hydrogen Sulfide	Batteries Included	Container Type		Each
5	5	5	5	50	50	20	1	1	50	5	500	5	Yes	Plastic Carrying Case	0000000	0000000

Replacement Tip	0000000	Each	000000
Replacement D Batteries (Pkg. of 6)	00000000	Pkg.	00000

Refrigerant Leak Detectors for Hard-to-Reach Areas

Detect halogenated refrigerants such as HFCs, CFCs, and HCFCs. Access hard-to-reach areas with the flexible probe. This unit can detect leaks as small as 0.1 oz. per year in air conditioning and refrigeration systems. An audible signal increases in intensity as you approach the leak.

Gas Type Detected	Probe Lg.	Batteries Included	Container Type	Specifications Met		Each
Hydrofluorocarbons (HFCs), Chlorofluorocarbons (CFCs), Hydrochlorofluorocarbons (HCFCs), R-22 (Freon) Refrigerant, R-134A Refrigerant, R-410A Refrigerant	14"	Yes	Plastic Carrying Case	UL Recognized Component, CE Marked, SAE J2791, SAE J2913	0000000	0000000

Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	00000
Replacement Tip	0000000	Each	00000

Ultrasonic Gas Leak Detectors

This detector converts ultrasonic waves to an audible sound so you can find leaks. Unlike typical leak detectors, this unit doesn’t rely only on the presence of a gas to work, making it suitable for a wider range of applications. In addition to gas leaks, it identifies ultrasonic sound caused by failing solenoids, valves, and bearings.

For systems under 10 psi, use the optional ultrasonic sound generator.

LCD Display

Batteries Included	Container Type	Includes		Each
Yes	Fabric Case	4" Dia. Sound-Amplifying Reflector Dish; 7 1/2" Tube Extension	0000000	0000000

Replacement 1.5V Battery (Pkg. of 1)	00000000	Pkg.	00000
Optional Ultrasonic Sound Generator	0000000	Each	000000

Combustion Efficiency Meters

Also known as a combustion analyzer, this meter measures boiler and furnace combustion efficiency. It automatically calibrates to normal atmospheric oxygen.

	Measurement Range				Calculated Range
For Use On	Ambient Temp.	Flue Gas Temp.	Flue Gas Oxygen	Carbon Monoxide, ppm	Combustion Efficiency	Carbon Dioxide	Air Free Carbon Monoxide, ppm	Excess Air	Accuracy	Batteries Included		Each
Kerosene, Natural Gas, Oil, Propane	25° to 110° F	-4° to 1200° F	0-20.9%	0-2,000	0.1%-100%	0-15%	0-9,999	0-250%	±0.3% of Oxygen Content	Yes	0000000	0000000

Replacement Oxygen Sensor	0000000	Each	0000000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000

Portable Multi-Gas Detectors with Probe

Use the probe to test the air in a hazardous area before entering. Great for confined spaces. This detector alerts 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.

Note: LEL is lower explosive limit.

Detects (Measuring Range)	Volume	Temperature Range, °F	Batteries Included	Includes	Tube Lg., ft.	Environmental Rating		Each
Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (0-100% LEL); Oxygen (0-30% Vol.); Carbon Monoxide (0-1,999 ppm); Hydrogen Sulfide (0-200 ppm)	95 dB @ 1 ft.	-40° to 140°	Yes	Sampling Probe, Tubing Assembly, Rechargeable Lithium Ion Battery for Probe	25	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 NEC Zone 0 Groups IIC, IIB, IIA IP68	00000000	000000000

Replacement Sampling Probe	00000000	Each	0000000
Replacement 25-ft.Tubing Assembly	00000000	Each	000000

Noise-Filtering Stethoscopes

Shown with Extension Probe Attached

Detect mechanical problems and leaks—headphones reduce background noise so you can isolate individual sounds. Use the 9" flexible probe on its own for general detection. Attach the 5" probe extension to detect faint sounds and vibration and access hard-to-reach areas.

Probe Lg.	Batteries Included	Includes	Container Type		Each
9"	Yes	5" Probe Extension, Headphones	Plastic Carrying Case	00000000	0000000

Replacement 9-Volt Battery (Pkg. of 1)

00000000

Pkg.

00000

Stethoscopes

With Sensor Probe and Extension

With Disc Probe and Sensor Probe

Listen to machine performance to detect mechanical problems and leaks.

Probe Type	Includes		Each
Sensor	12" Probe Extension	0000000	000000
Disc, Sensor	__	0000000	00000

Vibration Meters with Stethoscopes

In addition to measuring vibration, you can listen to and record machine performance. The magnetic base allows you to mount the probe on a machine for constant readings.

Measures	Vibration Range, cpm	Acceleration Range, g	Frequency Range, Hz	Velocity Range, in./sec.	Accuracy	Temp. Range, °F	Probe Lg.	Batteries Included	Container Type		Each
Vibration, Acceleration, Frequency, Velocity	600-600,000	0.01-19.99	10-10,000	0.01-19.99	±2%	-10° to 120°	4 1/2"	Yes	Case	000000	000000000