{"tema_id":"1443","string":"pressure reference level           #01440","created":"2022-12-19 09:13:37","code":null,"notes":[{"@type":"Cataloger's note","@lang":"en-EN","@value":"reference: R110:1994 2.6.2 "},{"@type":"Cataloger's note","@lang":"en-EN","@value":"ID: 01440 "},{"@type":"Definition note","@lang":"en-EN","@value":"the vertical level, with respect to a clearly defined part of the support column or the base of a pressure balance, to which a measured pressure is related when the piston is at a specific operating level "}]}