Air Flow Gauges | McMaster-Carr

	For Use With For Use With

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

NPTF

	Maximum Flow Maximum Flow

	Display Type Display Type


Scale	Dial

Digital	Inclined Scale

U-Tube

	Flow Measurement Scale Flow Measurement Scale

Standard Cubic Feet per
Minute

Standard Cubic Feet per Hour

Cubic Centimeters per Minute

Liters per Minute

Gallons per Minute

	Maximum Pressure Maximum Pressure

	Minimum Flow Minimum Flow

	Mounting Location Mounting Location

Inline

Panel

	Measures Measures

Airflow

Static Pressure

Differential Pressure

	Connection Style Connection Style

	Fitting Material Fitting Material

	Connection Type Connection Type


Pipe	Tube

	Direction of Flow Direction of Flow

	Gender Gender

Female

Male

	Graduations Graduations

	Maximum Temperature Maximum Temperature

	Overall Height Overall Height

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

DFARS Specialty Metals
COTS-Exempt

	Body Material Body Material

	Mounting Orientation Mounting Orientation

Vertical

Any Position

Horizontal

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

REACH Compliant

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

RoHS Compliant

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208 Products

About Flowmeters and Totalizers

Flowmeters measure the rate of flow for a liquid or a gas. Totalizers measure the cumulative flow volume. Flowmeter/totalizers display both the flow rate and the cumulative flow volume.

Flowmeters for Air

Measure the flow rate of compressed air.

Easy-Read Flowmeters for Air

The prominent dial is easier to read from a distance than a standard scale.

Easy-Read High-Pressure Flowmeters for Air

With a prominent dial instead of a scale, these flowmeters are easier to read from a distance than other high-pressure flowmeters for air.

High-Pressure Flowmeters for Air

Rated for at least six times the pressure of standard flowmeters for air, these can withstand pressures of at least 600 psi.

Panel-Mount Flowmeters for Air

For installation in instrument panels, these flowmeters have fittings on the back.

High-Accuracy Panel-Mount Flowmeters for Air

Choose these flowmeters for highly accurate flow rate measurements.

Impact-Resistant Panel-Mount Flowmeters for Air

For protection against damage, these flowmeters have a rugged, impact-resistant case.

Flowmeters for Inert Gas

The correlated scale and conversion charts let you use the same flowmeter for nitrogen, oxygen, argon, and helium.

Impact-Resistant Flowmeters for Water

A 304 stainless steel case protects these flowmeters from blows that could shatter the glass body.

Flow Transmitters for Air

Calibrated for compressed air.

Air Meters and Leak Detectors

Airflow/Static Pressure Meters

This meter is often used to test airflow through supply and return grilles and air filters.

Remote-Reading Airflow/Temperature Meters

With a probe on a cord, these meters access hard-to-reach places in duct.

Airflow/Temperature Meters

Airflow Meters

Pressure and Vacuum Gauges

Low-Pressure Differential Gauges with Inclined Scale

Easier to read than U-tube gauges, these use an inclined scale to measure pressure or velocity changes in air applications. They are also known as manometers.

Low-Pressure Differential Gauges with U-Tube

Also known as manometers, these gauges come with indicating liquid that moves up and down two columns—the difference in height between them is your pressure.

Liquid for Low-Pressure
Differential Gauges with U-Tube

Refill U-tube gauges.

Low-Pressure Differential Gauges with Digital Display

Gauges have a digital display for easy reading of measurements.

Air Sensors for Differential Pressure

Use these sensors with differential pressure gauges and switches to measure the static pressure drop across air filters, cooling coils, and blowers in air-handling equipment.

Air Sensors

Also known as pitot tubes, these can be used with manometers to measure air flow rate.

Differential Pressure and Vacuum
Gauges with Digital Display

Gauges have a digital display for easy reading of measurements.

About Flowmeters and Totalizers

Flowmeters

Flowmeters for Air

Easy-Read Flowmeters for Air

Easy-Read High-Pressure Flowmeters for Air

High-Pressure Flowmeters for Air

Panel-Mount Flowmeters for Air

High-Accuracy Panel-Mount Flowmeters for Air

Impact-Resistant Panel-Mount Flowmeters for Air

Flowmeters for Inert Gas

Impact-Resistant Flowmeters for Water

Flow Transmitters for Air

Flow Transmitters for Air

Air Meters and Leak Detectors

Airflow/Static Pressure Meters

Remote-Reading Airflow/Temperature Meters

Airflow/Temperature Meters

Airflow Meters

Pressure and Vacuum Gauges

Low-Pressure Differential Gauges with Inclined Scale

Low-Pressure Differential Gauges with U-Tube

Liquid for Low-PressureDifferential Gauges with U-Tube

Low-Pressure Differential Gauges with Digital Display

Air Sensors for Differential Pressure

Air Sensors

Differential Pressure and VacuumGauges with Digital Display

Liquid for Low-Pressure
Differential Gauges with U-Tube

Differential Pressure and Vacuum
Gauges with Digital Display