CFM Indicators | McMaster-Carr

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Measures

Air Volume

Airflow

Differential Pressure

Meter Style

Airflow Speed

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

REACH

Battery Type

Width

Probe Cable Length

Maximum Speed

Height

Minimum Temperature

Battery Chemistry

Battery Size

Probe Diameter

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

Minimum Speed

Speed

0.25 m/s to 0.375 m/s

0.375 m/s to 0.49 m/s

Depth

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Overall Height

Overall Depth

Overall Width

13 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