This test method provides tests to compare the emf stabilities of base-metal thermoelements using dual, simultaneous, thermal-emf indicators. The tests are conducted in air at a specified constant temperature, and the emfs of the base-metal thermoelements are measured against a platinum thermoelement. Thus, the method also yields the time-dependent change of the emf of a base-metal thermoelement relative to a platinum thermoelement. The total life (time to open circuit) of the thermoelement can be determined by the method, if desired.
Formerly under the jurisdiction of Committee E20 on Temperature Measurement, this test method was withdrawn in January 2006 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
Область применения1.1 This test method provides tests to compare the emf stabilities of base-metal thermoelements using dual, simultaneous, thermal-emf indicators. The tests are conducted in air at a specified constant temperature, and the emfs of the base-metal thermoelements are measured against a platinum thermoelement. Thus, the method also yields the time-dependent change of the emf of a base-metal thermoelement relative to a platinum thermoelement. The total life (time to open circuit) of the thermoelement can be determined by the method, if desired.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.