Volumetric Air Meter

ASTM C 173, AASHTO T-196

A volumetric Air Meter measures air entrainment in fresh concrete by the "Volumetric Method." Air is removed from a known volume of concrete by agitation in an excess of water. It may be used with any type of aggregate including light weight and porous material. The test is not affected by atmospheric pressure and the specific gravity of the material need not be known. A direct reading sight gauge is built-in to the instrument. The base has a volume of 130 in3 (2.13 dm3) and the sight tube reads 0-10%.

These Meters can be used as a pycnometer to determine the specific gravity of cement, sand or gravel as well as the percent of free-water in damp sand and gravel.

C-440 is machined bronze. The base and upper chamber of model C-440A is constructed of machined aluminum. Either model is supplied in a wood case with straight edge, tamping rod, syringe, baffle-bottom funnel and instructions.

Replacement parts (PDF 267 KB)

C-440	Roll-a-Meter, Bronze in wood case
C-440A	Roll-a-Meter, (aluminum) in plastic case

For more information and spare parts:

Catalog Pages