Concrete Air Meters and Indicators
Humboldt Concrete Air Meter
Features all-brass H-2785.DB super pump for reliability and faster operation.
Concrete Air Meter
Low maintenance air meter. Similar to H-2786 except no moving parts inside chamber.
Press-Ur-Meter Concrete Air Meter
Determine air content, specific gravity and free moisture test of aggregates.
Roll-A-Meter Air Indicator
This aluminum Roll-A-Meter is used to determine the air content of concrete mixes, containing lightweight aggregate
Volumetair Air Meter
Used for the rolling method of measuring entrained air in any concrete.
Chace Concrete Air Indicator Kit
Complete kit for measuring air content of fresh concrete.
Chace Concrete Air Indicator
For quick field checks for air content of fresh concrete in about three minutes.
Super Pump for Air Meters
The Super Pump's all brass construction resists acids in cement.
Air Entrainment Meter, 8L
The H-2782 8 Liter air meter features push-buttons for simple test performance.
Air Entrainment Meter, 5L
The H-2781 5 Liter air meter features push-buttons for simple test performance.
Concrete Air Meter Calibrator (5%), Plastic
Calibrator checks the accuracy of any pressure-type concrete air meter.
Concrete Air Meter Calibrator (5%), Brass
Brass, Concrete Air Meter 5% Calibrator
Concrete Air Meter Calibrator (5%), Aluminum
Concrete air Meter Calibrator with aluminum construction
Air Meters and Indicators, continued
They relieve pressure and while extending the mix’s lifetime.
Much testing is required to assure the concrete is mixed correctly. Evaluations carried out on fresh concrete during placement is often not representative of the concrete’s actual properties. Because of this, air meters and indicators are used to determine the air content of fresh concrete. More specially, they guarantee that concrete will be durable under freeze/thaw conditions.
There are two main types of air meters:
Pressure meters provide quick, reliable results. Using an upper chamber of air and a lower chamber of concrete, air is pressurized and released into the lower chamber. The bubbles formed by the concrete compressing under increased pressure are measured and used to determine the air content of the concrete.
Volumetric meters take significantly more time and effort. Through this method a microscope is used to count and measure the size of the air bubbles. This can determine the average bubble size and specific surface. These are ultimately used to determine the air content of a concrete mix.
Because there are multiple ways to test air content of fresh concrete, you have to be careful not to only go by the initial results. Assessment outcomes can vary especially based on conditions. Specifically on large quantities of concrete, it can be important to do further investigation with both field and lab tests.
Humboldt provides a wide selection of Air Meters and Indicators to choose from. If you have questions or need help selecting equipment, please call us at 1.800.544.7220 or use our Ask Humboldt form.