Thermal-demand-meter testing techniques

THIS PAPER is written to encourage thinking and development on the subject of thermal-demand-meter testing procedures with specific reference to the development of shorter testing techniques. Conventional test methods in the past have involved relatively long periods of load holding to bring the meters under test to thermal equilibrium for the calibration check and adjustment. With the increasing use of thermal meters it is desirable to use some testing method which more nearly resembles tests on watt-hour meters. This paper outlines three general methods for shortening the test time and leaves to the reader the choice of the method, or modification of it, best suited to his requirements.