This document specifies the measurement characteristics, calibration conditions, calibration items, calibration methods, expression of calibration results and the on-site calibration of a pressure-type sulfur hexafluoride (SF6) gas density controller or gas density relay (hereinafter referred to as the density controller). Re-schooling time interval and other contents. This document is suitable for on-site calibration of density controllers with spring tubes or bellows as measuring elements, with temperature compensation devices and contact output functions.
T/CEC 414-2020 history
2020T/CEC 414-2020 On-site calibration specification for pressure type sulfur hexafluoride gas density controller