What is the main difference between Type A and Type B pressure meters?

Type A meter requires inverting the sealed unit to allow water into the chamber, while Type B uses a piston to force water into the chamber from a cylinder.

Which IS code describes the test method using the pressure meter specified here?

IS 1199 (Part 4) 'Methods of Sampling and Analysis of Concrete, Part 4: Determination of Air Content of Fresh Concrete'.

What is the specified capacity for the measuring bowl?

The nominal capacity is 0.005 m³ for a Type A meter and 0.007 m³ for a Type B meter (Clause 3.1.2).

IS 9799

: 1981

Specification for pressure meter for determination of air content of freshly mixed concrete

CurrentSpecializedSpecificationMaterials Science · Cement, Concrete, Aggregates and RCC

Download PDF BIS Portal Google

This standard lays down the specifications for the design, construction, and calibration of pressure-type meters used for determining the air content of freshly mixed concrete. It covers two main types of meters (Type A and Type B), detailing their constituent parts like the measuring bowl, cover assembly, and pressure gauge to ensure accuracy and consistency in testing.

Specification for pressure meter for determination of air content of freshly mixed concrete

Quick Reference Values

Nominal capacity of measuring bowl (Type A)0.005 m³

Nominal capacity of measuring bowl (Type B)0.007 m³

Pressure gauge range0 to 0.2 N/mm²

Pressure gauge least count0.002 N/mm²

Practical Notes

This document specifies the apparatus itself; the actual test procedure is detailed in IS 1199 (Part 4).

Regular calibration of the pressure gauge and the entire apparatus as per Appendix A is critical for accurate results.

This standard is primarily for manufacturers of testing equipment and calibration laboratories, rather than for daily use by site engineers.