Velocimeters | McMaster-Carr

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Measures

Differential Pressure

Displacement

Frequency

Light

Magnetic Field Strength

Meter Style

Airflow Speed

Display Type

Air Volume

0 ft³/min to 9,999 ft³/min

0 ft³/min to 99,999 ft³/min

0 ft³/min to 999,900 ft³/min

0 ft³/min to 999,999 ft³/min

0 ft³/min to 1,270,000 ft³/min

0 ft³/min to 1,907,000 ft³/min

Data Connection

Maximum Temperature

RoHS

Compliant with Exemptions

REACH

Minimum Temperature

Width

Maximum Speed

1,000 fpm to 2,999 fpm

3,000 fpm to 3,999 fpm

4,000 fpm to 9,999 fpm

10,000 fpm or greater

Speed

Height

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Battery Type

Minimum Speed

Export Control Classification Number (ECCN)

Depth

DFARS Specialty Metals

Overall Height

Overall Width

Overall Depth

Probe Cable Length

Battery Chemistry

Battery Size

40 Products

Remote-Reading Airflow/Temperature Meters

With a probe on a cord, these meters access hard-to-reach places in duct. They display airflow and temperature simultaneously and can show airflow measurements on multiple scales, such as fpm, mph, and knots. Also known as anemometers.

Fan

Image of Product. Front orientation. Airflow Meters. Remote-Reading Airflow/Temperature Meters, Fan.

Fan meters are also known as vane meters. Those with a built-in surface temperature thermometer also measure the temperature of hard-to-reach surfaces.

3.5 mm Audio Connection—Meters with a 3.5 mm audio data connection can transmit data through a USB connection using a USB adapter cord (sold separately, except for Style C).

Standard SD Card Connection—Meters with an SD card data connection store timestamped readings on an SD card in Excel format, for easy datalogging and PC transfer.

					Overall
	Airflow Speed	Temperature Range	Display Type	Max. Air Volume, ft³/min	Ht.	Wd.	Dp.	Probe Cable Lg., ft.	Data Connection	Batteries Included	Includes		Each
Measures Airflow and Temperature



		60 to 6,900 fpm 0.7 to 78.2 mph 0.6 to 68 kn 0.4 to 35 m/s 1 to 126 kph	32° to 158° F 0° to 70° C	Digital	—	7 3/16"	2 7/8"	1 7/8"	3	Standard SD Card	Yes	Carrying Case	4120K104	0000000


		Measures Airflow, Temperature, and Air Volume



				80 to 5,906 fpm 0.9 to 67.2 mph 0.8 to 58.3 kn 0.4 to 30 m/s 1.4 to 108 kph	14° to 140° F -10° to 60° C	Digital	9,999	7"	2 7/8"	1 5/16"	4	—	Yes	Carrying Case	4120K102	000000


				100 to 6,800 fpm 1.14 to 70 mph 1 to 60 kn 0.5 to 30 m/s 1.83 to 125 kph	32° to 175° F 0° to 80° C	Digital	999,900	7"	2 15/16"	1 5/16"	3	3.5 mm Audio	Yes	Carrying Case	4120K35	000000


				Measures Airflow, Temperature, and Air Volume, —With Calibration Certificate Traceable to NIST



						80 to 5,906 fpm 0.9 to 67.2 mph 0.8 to 58.3 kn 0.4 to 30 m/s 1.4 to 108 kph	14° to 140° F -10° to 60° C	Digital	9,999	7"	2 7/8"	1 5/16"	4	—	Yes	Carrying Case	4120K109	000000

Fan—Built-In Surface Temperature Thermometer

Image of Product. Front orientation. Contains Annotated. Airflow Meters. Remote-Reading Airflow/Temperature Meters, Fan—Built-In Surface Temperature Thermometer.

Fan meters are also known as vane meters. Those with a built-in surface temperature thermometer also measure the temperature of hard-to-reach surfaces.

					Overall
	Airflow Speed	Temperature Range	Display Type	Max. Air Volume, ft³/min	Ht.	Wd.	Dp.	Probe Cable Lg., ft.	Batteries Included	Includes		Each
Measures Airflow, Temperature, and Air Volume



		80 to 5,906 fpm 0.9 to 67.2 mph 0.8 to 58.3 kn 0.4 to 30 m/s 1.4 to 108 kph	14° to 140° F -10° to 60° C	Digital	999,999	7"	2 7/8"	1 5/16"	4	Yes	Carrying Case	4120K103	0000000

Mini Fan—Fan in Probe Tip

Mini fan meters have a fan at the end of a telescoping probe. You can also use them to measure humidity.

3.5 mm Audio Connection—Meters with a 3.5 mm audio data connection can transmit data through a USB connection using a USB adapter cord (sold separately, except for Style C).

						Overall			Probe
	Airflow Speed	RH	Temperature Range	Display Type	Max. Air Volume, ft³/min	Ht.	Wd.	Dp.	Dia.	Cable Lg., ft.	Max. Probe Extension, ft.	Data Connection	Batteries Included	Includes		Each
Measures Airflow, Temperature, Relative Humidity, and Air Volume



		100 to 3,940 fpm 0.5 to 20 m/s	0% to 100%	-4° to 140° F -20° to 60° C	Digital	99,999	6 11/16"	3"	1 11/16"	23/32"	3	3	3.5 mm Audio	Yes	3 ft. Long USB Adapter Cord, Carrying Case, Data-Recording Software	4120K105	0000000

USB Cords

		Each
USB Adapter Cords for Meters with 3.5 mm Audio Connection	4120K67	000000

Pitot Tube

Pilot tube meters measure a wider airflow range than other meters. They also measure differential pressure.

Mini USB-B Connection—Meters with a mini-USB and micro-USB connection type transmit data to your PC through the included cable.

						Overall			Probe
	Airflow Speed	Temperature Range	Display Type	Pressure Differential Range, psi	Max. Air Volume, ft³/min	Ht.	Wd.	Dp.	Dia.	Cable Lg., ft.	Data Connection	Batteries Included	Includes		Each
Measures Airflow, Temperature, Air Volume, and Differential Pressure



		200 to 15,733 fpm 2.25 to 178.66 mph 2 to 154.6 kn 1 to 80 m/s 3.5 to 288 kph	32° to 122° F 0° to 50° C	Digital	0 to 0.73	99,999	8 3/16"	2 7/8"	1 7/8"	11/32"	3	Mini USB-B	Yes	3 ft. Long USB Cord, Carrying Case, Data-Recording Software, Two 3 ft. Long Pitot Tubes	4120K107	0000000

Telescoping Tube

Telescoping tube meters are also known as hot wire meters. They have a probe that telescopes to reach into narrow openings.

3.5 mm Audio Connection—Meters with a 3.5 mm audio data connection can transmit data through a USB connection using a USB adapter cord (sold separately, except for Style C).

Standard SD Card Connection—Meters with an SD card data connection store timestamped readings on an SD card in Excel format, for easy datalogging and PC transfer.

					Overall			Probe
	Airflow Speed	Temperature Range	Display Type	Max. Air Volume, ft³/min	Ht.	Wd.	Dp.	Dia.	Cable Lg., ft.	Max. Probe Extension, ft.	Data Connection	Batteries Included	Includes		Each
Measures Airflow and Temperature



		40 to 3,900 fpm 0.5 to 40 mph 1 to 30 kn 0.2 to 20 m/s 0.7 to 70 kph	32° to 122° F 0° to 50° C	Digital	—	7"	2 15/16"	1 5/16"	1/2"	4	3	3.5 mm Audio	Yes	—	4120K54	0000000


		Measures Airflow and Temperature—With Calibration Certificate Traceable to NIST



				40 to 3,900 fpm 0.5 to 40 mph 1 to 30 kn 0.2 to 20 m/s 0.7 to 70 kph	32° to 122° F 0° to 50° C	Digital	—	7"	2 15/16"	1 5/16"	1/2"	4	3	3.5 mm Audio	Yes	—	4120K111	000000


				Measures Airflow, Temperature, and Air Volume



						40 to 3,300 fpm 0.5 to 30 mph 0.39 to 30 kn 0.2 to 10 m/s 0.7 to 60 kph	32° to 122° F 0° to 50° C	Digital	1,270,000	8"	3"	1 1/2"	1/2"	4	3	3.5 mm Audio	Yes	—	4120K37	000000


						40 to 3,940fpm 0.5 to 45 mph 1 to 31 kn 0.2 to 25 m/s 0.7 to 72 kph	32° to 122° F 0° to 50° C	Digital	1,907,000	7 3/16"	2 7/8"	1 7/8"	1/2"	4	3	Standard SD Card	Yes	Carrying Case	4120K106	000000

USB Cords

		Each
USB Adapter Cords for Meters with 3.5 mm Audio Connection	4120K67	000000

Telescoping Tube—Gooseneck

Telescoping tube meters are also known as hot wire meters. They have a probe that telescopes to reach into narrow openings.

Micro USB-B Connection—Meters with a mini-USB and micro-USB connection type transmit data to your PC through the included cable.

					Overall			Probe
	Airflow Speed	Temperature Range	Display Type	Max. Air Volume, ft³/min	Ht.	Wd.	Dp.	Dia.	Cable Lg., ft.	Max. Probe Extension, ft.	Data Connection	Batteries Included	Includes		Each
Measures Airflow, Temperature, and Air Volume



		60 to 5,904 fpm 0.7 to 67 mph 0.6 to 58.3 kn 0.3 to 30 m/s 1 to 108 kph	32° to 113° F 0° to 45° C	Digital	999,900	7 5/8"	2 11/16"	1 5/16"	1/16"	5.5	2 1/2	Micro USB-B	Yes	3 ft. Long USB Cord, Carrying Case, Data-Recording Software	4120K101	0000000

Indoor Environmental Meters

Measure airflow, light, humidity, and temperature with a single, pocket-sized tool. These meters have built-in sensors that can detect multiple environmental factors in your plant or office. This helps you maintain safety compliance and track energy efficiency. A data hold function lets you freeze a measurement on the screen, giving you time to write it down. Additionally, they have the memory to store your high and low measurements. These meters are also known as hygro-thermo-anemometers.

They’re CE marked as compliant with European health, safety, and environmental standards.

Fan

			Light Measurement Range					Overall
	Airflow Speed	For Light Tech.	Footcandles, fc	Lux, lx	RH	Temperature Range	Display Type	Ht.	Wd.	Dp.	Blade Dia.	Batteries Included	Certification		Each
Measures Airflow, Temperature, Light, and Relative Humidity



		80 to 5,905 fpm 0.4 to 25 mm/s 1.45 to 105 kph 0.95 to 65 mph 0.85 to 55 kn	Halogen	0 to 1,855	0 to 15,000	95%	35° to 120° F	LCD	6"	2 1/4"	1 1/4"	1"	Yes	CE Marked	7598N11	0000000

Thermocouple Probes for Light Meters

Thermocouple Type	Cable Lg., ft.	Temp. Range, ° F		Each
K	3	-40 to 482	3581N12	000000

Airflow/Temperature Meters

These versatile meters display airflow and one other measurement simultaneously. They’re also known as anemometers or vane meters. They can show airflow measurements on multiple scales, such as fpm, mph, and knots.

Fan

Image of Product. Front orientation. Airflow Meters. Airflow/Temperature Meters, Fan.

4" Diameter Blade—Meters with a 4” blade diameter give you more accurate readings on large HVAC ducts than meters with smaller blades.

						Overall
	Airflow Speed	RH	Temperature Range	Dew Point Range, ° F	Display Type	Ht.	Wd.	Dp.	Blade Dia.	Batteries Included	Includes		Each
Measures Airflow and Temperature



		40 to 5,900 fpm 0.2 to 30 m/s	—	0° to 140° F -20° to 60° C	—	Digital	10 1/2"	4 1/4"	2"	4"	Yes	Carrying Case	1410K102	0000000


		Measures Airflow, Temperature, Relative Humidity, and Dew Point



				40 to 5,900 fpm 0.2 to 30 m/s	1% to 99%	0° to 140° F -20° to 60° C	32 to 122	Digital	10 1/2"	4 1/4"	2"	4"	Yes	Carrying Case	1410K103	000000

Fan—Foldable

Foldable fan meters are small enough to fit in your pocket when closed, then extend to 9” when unfolded.

	Airflow Meters													Replacement Batteries
						Overall
	Airflow Speed	RH	Temperature Range	Dew Point Range, ° F	Display Type	Ht.	Wd.	Dp.	Blade Dia.	Batteries Included	Includes		Each	Pkg. Qty.		Pkg.
Measures Airflow and Temperature



		100 to 5,500 fpm 1.1 to 60 mph 1 to 50 kn 0.5 to 20 m/s 1.8 to 100 kph	—	0° to 122° F -18° to 50° C	—	Digital	5 1/4" to 9"	2 3/4"	3/4"	1"	Yes	Lanyard	1410K14	0000000	1	7701K34	00000


		Measures Airflow, Temperature, Relative Humidity, and Dew Point



				100 to 5,500 fpm 1.1 to 60 mph 1 to 50 kn 0.5 to 20 m/s 1.8 to 100 kph	10% to 95%	0° to 122° F -18° to 50° C	32 to 122	Digital	5 1/4" to 9"	2 3/4"	3/4"	1"	Yes	Lanyard	1410K15	000000	1	7701K34	0000

Fan—Compass, Foldable

Image of Product. Front orientation. Airflow Meters. Airflow/Temperature Meters, Fan Meter, Foldable.

Foldable fan meters are small enough to fit in your pocket when closed, then extend to 9” when unfolded.

	Airflow Meters													Replacement Batteries
						Overall
	Airflow Speed	RH	Temperature Range	Dew Point Range, ° F	Display Type	Ht.	Wd.	Dp.	Blade Dia.	Batteries Included	Includes		Each	Pkg. Qty.		Pkg.
Measures Airflow, Temperature, Relative Humidity, and Dew Point



		60 to 3,900 fpm 0.5 to 40 mph 0.4 to 30 kn 1.1 to 20 m/s 0.8 to 70 kph	1% to 99%	5° to 120° F -15° to 50° C	-4 to 122	Digital	5 1/2" to 9"	1 3/4"	1"	1"	Yes	Lanyard	1410K101	0000000	1	7701K34	00000

Airflow Meters


Liquid Meter	Swinging-Vane Meter

Liquid Meter—Liquid meter is also known as a manometer.

Swinging-Vane Meter—Swinging vane meter is for low-velocity airflow. It is commonly used in spray booths and exhaust hoods.

		Overall
	Airflow Speed, fpm	Ht.	Wd.	Dp.	Fitting Connection	Mounting Fasteners Included	Mounting Hole Dia.	Includes		Each
Liquid Meter



		0 to 7,000	6"	7 1/2"	1 1/4"	Barbed	Yes	—	8-ft. Lg. Tubing, Red Indicating Liquid	3974K3	0000000


		Swinging-Vane Meter



				30 to 400	3 7/8"	3 13/16"	1 9/16"	—	No	3/16"	Spare Vane, Steel Mounting Bracket	4075K61	00000

Replacements for Airflow Meters


Replacement Vanes	4075K74	Pkg. of 2	000000
Replacement Liquid	3974K7	Each	00000

Vibration Meters


Meter with Probe (Sold Separately)	LCD Display

In addition to vibration, these meters measure acceleration, frequency, speed, displacement, and temperature. Use them to gauge the health of your bearings and machines. Onscreen analytics allow you to instantly check the condition of your equipment. These meters store up to 3,500 readings in memory, and you can transfer them to your computer with a USB cord (not included) to track trends.

Cannot Be Sold To—Import regulations restrict sales to the listed areas.

Measures	Vibration Freq. Range, vpm	Accel. Range, g	Freq. Range, Hz	Speed Range, in/sec	Displacement Range, mil	Temp. Range, ° F	Accuracy	Max. Reading Display Time, min.	Probe Lg.	Batteries Included	Container Type	Digital Display Type	Cannot Be Sold To		Each
Vibration, Acceleration, Frequency, Displacement, Speed, Temperature	600 to 60,000	0.01 to 50	10 to 1,000	0.06 to 307	1 to 4,889	0 to 390	±5%	3	1/64"	Yes	Case	LCD	Canada	8721T2	000000000

Accessories and Replacements for Vibration Meters

7 ft. Probe—Add a probe to take measurements in hard-to-access areas. It has a magnetic base you can mount to a machine to get constant readings.


7 ft. Probe	8721T11	Each	000000000
Replacement AA Batteries (Pkg. of 4)	71455K53	Pkg. of 4	0000

Handheld Machine-Monitoring Sensors


Sensor Shown with App	Measure Speed, Acceleration, and Temperature

Monitor the health of pumps, engines, and other rotating equipment from your wireless device. These battery-powered sensors measure speed, acceleration, and temperature to help identify potential problems related to balance, alignment, and lubrication. Good for daily maintenance checks, they're battery powered and magnetic, so you can stick them on a machine, take a reading, and move to the next machine. They send readings using Bluetooth, which you can review in the field or offsite.

Install the app on your device and create profiles for multiple pieces of equipment—once created, you won’t have to enter information each time you want to do a maintenance check. Based on your machine profiles, the app will set default alarm thresholds. It will also recommend courses of action.

Cannot Be Sold To—Sensors and replacement chargers cannot be sold to certain regions due to local energy efficiency regulations.

Measures	Freq. Range, Hz	Speed Range, in/sec	Enveloping Accel. Range, gE	Operating System Compatibility	Ht.	Wd.	Dp.	Temp. Range, ° F	Batteries Included	Battery Charger Included	Enclosure Rating	Certification	Cannot Be Sold To		Each
Acceleration, Speed, Temperature	10 to 1,000	0 to 2.17	0 to 20	Android 8.0 or Later, iOS 13.0 or Later	5 1/4"	1 3/4"	1 3/4"	-5 to 140	Yes	Yes	IP65	CE Marked	California, Oregon	6161N111	000000000

Replacements for Vibration Monitors

Cannot Be Sold To		Each
California, Vermont	6161N112	0000000

Component		Each
Magnet	6161N113	0000000

Pocket Vibration Meter Sets


	Vibrating Reed

Set includes one meter for low-speed vibration and one meter for higher speed vibration. A flexible steel wire reed detects vibration while the scale on the side of the meter indicates the machine vibration in vibrations per minute (vpm). A simple calculation determines motor speed in rpm for engines with multiple cycles.

Measures	Container Type	Includes		Each
Vibration	Case	One Vibration Meter with 200 vpm-2000 vpm Vibration Range and ±15% Accuracy of Reading One Vibration Meter with 2000 vpm-21000 vpm Vibration Range and ±10% Accuracy of Reading	1353T13	0000000

Motion-Measuring Modules for Development Boards

Measure your device's acceleration, rotation, or orientation. These modules gather data over time and track movement, which can help improve performance, debug issues, and calibrate your components. Solder them onto a development board. To connect them to your device, solder on a wire or header. For a solderless connection, use a Qwiic cord (not included).

Modules with Accelerometer

An accelerometer measures the rate at which your device is speeding up or slowing down.

		Output Data
	Accel., g	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		8 16 32 64	16	10	Acceleration	-40 to 220	1.2 to 3.6	0x1E 0x1F	Solder	2	1"	1"	8184N11	000000

Modules with Accelerometer and Gyroscope

A gyroscope measures how fast your device is rotating.

An accelerometer measures the rate at which your device is speeding up or slowing down.

			Output Data
	Accel., g	Velocity	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		2 4 8 16	125 °/s 250 °/s 500 °/s 1,000 °/s 2,000 °/s 4,000 °/s	16	7.68	Acceleration, Angular Velocity	-40 to 185	1.71 to 3.6	0x6A 0x6B	Solder	2	1"	1"	8184N12	000000

Modules with Accelerometer, Gyroscope, Magnetometer

A gyroscope measures how fast your device is rotating.

A magnetometer measures your device's orientation.

An accelerometer measures the rate at which your device is speeding up or slowing down.

				Output Data
	Accel., g	Velocity	Magnetic Field Measuring, G	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		2 4 8 16	125 °/s 250 °/s 500 °/s 1,000 °/s 2,000 °/s 4,000 °/s	0 to 8	18	1	Acceleration, Angular Velocity, Magnetic Field Strength	-40 to 220	1.71 to 3.6	0x6A 0x6B 0x30	Solder	2	1"	1"	8184N13	000000

Digital Pocket Vibration Meters


	LCD Display

Keep these meters on hand to quickly check the health of your machine and bearings. They digitally measure acceleration, frequency, and speed to help you identify potential problems, such as bearings that are off balance or misaligned. These meters have two different bases for taking readings. The magnetic base is useful for hands-free readings on magnetic surfaces. For nonmagnetic surfaces, use the pin tip and gently hold the meter against the vibrating surface. Rated IP65, these meters will continue to measure in dusty and wet workspaces.

Measures	Accel. Range, g	Freq. Range, Hz	Speed Range, in/sec	Accuracy	Probe Lg.	Batteries Included	Container Type	Enclosure Rating	Digital Display Type	Includes		Each
Acceleration, Frequency, Speed	0.5 to 20.39	10 to 1,000	0.02 to 7.87	±5%	1 3/16"	Yes	Pouch	IP65	LCD	Magnetic Base Pin Tip	5973N11	0000000

Inertial Measurement Units

Mount these sensors to robot arms, cranes, and vehicles to accurately track their movements. Also known as movement monitoring sensors for vehicles and machines, they hold sensors for attitude, angular velocity (rotation speed), and acceleration in a housing about the size of a hockey puck. As your machine moves, these sensors send data to vehicle systems and computers in real time using SAE-J1939 protocols. They can trigger on-board safety systems, which alert operators to dangerous conditions, adjust a vehicle’s path to avoid accidents, and keep machines working in safe zones. Use these sensors right out of the box with the standard settings or customize them for specific applications with the included software. They’re rated IP67 and IP69K to hold up to dirty, dusty environments and washdowns with hot, high-pressure water.

										Mounting
	Accel. Range, m/s²	Angular Velocity Range	Attitude Range	Resolution	Input Voltage Range, V DC	Wd.	Lg.	Ht.	Temp. Range, ° F	Fasteners Included	Screw Size	No. of Holes	Hole Dia., mm	No. of Poles	Enclosure Rating	Specs. Met	Mil. Spec.		Each
SAE-J1939 Communication Protocol—Female DT Deutsch Style Connection



		-58.84 to 58.84	-500 °/s to 500 °/s	-180° to 180°	0.01	9 to 36	4"	5 1/2"	1 1/8"	-40 to 185	No	M8	3	8.9	4	IP67, IP69K	UL 746C f1	MIL-STD-202	6181N11	0000000

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 Freq. Range, vpm	Accel. Range, g	Freq. Range, Hz	Speed Range, in/sec	Temp. Range, ° F	Accuracy	Probe Lg.	Batteries Included	Container Type	Digital Display Type	Includes		Each
Vibration, Acceleration, Frequency, Speed	600 to 600,000	0.01 to 19.99	10 to 10,000	0.01 to 19.99	-10 to 120	±2%	4 1/2"	Yes	Case	LCD	Padded Headphones	8738T1	000000000

Pocket Vibration Meters


200 vpm to 2,000 vpm Vibration Frequency Range	2,000 vpm to 21,000 vpm Vibration Frequency Range	Vibrating Reed

A flexible steel wire reed detects vibration while the scale on the side of the meter indicates the machine vibration in vibrations per minute (vpm). A simple calculation determines motor speed in rpm for engines with multiple cycles.

Measures	Vibration Freq. Range, vpm	Accuracy	Container Type		Each
Vibration	200 to 2,000	±15%	Case	1353T15	000000
Vibration	2,000 to 21,000	±10%	Case	1353T11	00000