Humboldt Manufacturing - Testing Equipment for Construction Materials

Humboldt Concrete Air Meter

Humboldt's Concrete Air Meter features easy-to-use stainless clamping system employs four, one-piece, self-locking clamps to seal lid to base with proper tension. O-ring assures watertight seal. Easy-to-read (to nearest 1/10th%) 4-inch diameter direct percentage gauge with calibration adjustments. Features all-brass H-2785.DB super pump for reliability and faster operation. Unique pop-it valve eliminates seal failures. Complete with high-impact horizontal plastic carrying case, syringe, tamping rod, strike-off bar, calibration vessel, inside and outside calibration tubes and instructions.

Manual: H-2783_-_Air_Meter.pdf

Concrete Air Meter (Press-Ur-Meter) with Wooden Case

The original Concrete Air Meter, the Press-Ur-Meter for field and laboratory tests, 1/4-cu.-ft. (.007m³) air meter is designed to determine air content, determination of specific gravity and free moisture test of aggregates. Designed to save time, reduce water used, ensure accuracy and maintain sample integrity (sample may be used for slump and compression tests). Features built-in, all-brass H-2785.DB super pump. Furnished with all necessary accessories for calibration and operation and carrying case. Overall height: 20-1/2" (521mm). Shipping wt. 36 lbs. (16.4kg)

Manual: H-2786_-_Air_Meter.pdf

Concrete Air Meter, Economy Model

Economy model Concrete Air Meter, similar to H-2786 Air Meter except that the needle valve, the air release lever and the handles on the pressure chamber have been eliminated. A third petcock has been added for pressure release. This model comes with a plastic carrying case.

Manual: H-2786C_-_Air_Meter.pdf

Plastic Air Meter Calibrator

Calibrator checks the accuracy of any pressure-type concrete air meter. Set the specially designed canister upright at the bottom of the water-filled base, and the meter should read 5% air by volume. Two calibrators will check 10% air reading. Dimensions: 4" dia. x 3-3/4" (102 x 95mm).

Brass Air Meter Calibrator

Calibrator checks the accuracy of any pressure-type concrete air meter. This model is constructed from machined brass for greater durability. The Calibration Canister is placed upright at the bottom of the water-filled base, and the meter should read 5% air by volume. Two calibrators will check 10% air reading.

Super Pump for All Concrete Air Meters

The Super Pump is the best operating pump available and can be used with any type B Concrete Air Meter. It's all brass construction resists acids in cement. All parts, including valve, are replaceable.