Pan adawodd y DU yr UE, cyhoeddodd legislation.gov.uk ddeddfwriaeth yr UE a gyhoeddwyd gan yr UE hyd at ddiwrnod cwblhau’r cyfnod gweithredu (31 Rhagfyr 2020 11.00 p.m.). Ar legislation.gov.uk, mae'r eitemau hyn o ddeddfwriaeth yn cael eu diweddaru'n gyson ag unrhyw ddiwygiadau a wnaed gan y DU ers hynny.
Version Superseded: 02/01/2013
Cyhoeddir Cyfarwyddebau’r UE ar y wefan hon i gynorthwyo croesgyfeirio o ddeddfwriaeth y DU. Ers diwrnod cwblhau’r cyfnod gweithredu (31 Rhagfyr 2020 11.00 p.m.) nid oes unrhyw ddiwygiadau wedi'u cymhwyso i'r fersiwn hon.
The response factor (Rf) for a particular hydrocarbon species is the ratio of the FID C 1 reading to the gas cylinder concentration, expressed as ppm C 1 .
The concentration of the test gas must be at a level to give a response of approximately 80 % of full scale deflection, for the operating range. The concentration must be known, to an accuracy of ± 2 % in reference to a gravimetric standard expressed in volume. In addition the gas cylinder must be preconditioned for 24 hours at a temperature between 293 K and 303 K (20 ° and 30 °C).
Response factors should be determined when introducing an analyzer into service and thereafter at major service intervals. The reference gas to be used is propane with balance purified air which is taken to give a response factor of 1,00.
The test gas to be used for oxygen interference and the recommended response factor range are given below:
Propane and nitrogen 0,95 ≤ Rf ≤ 1,05.]
Mae’r holl gynnwys ar gael dan Drwydded Llywodraeth Agored v3.0 ac eithrio ble nodir yn wahanol. Yn ychwanegol mae’r safle hwn â chynnwys sy’n deillio o EUR-Lex, a ailddefnyddiwyd dan delerau Penderfyniad y Comisiwn 2011/833/EU ar ailddefnyddio dogfennau o sefydliadau’r UE. Am ragor o wybodaeth gweler ddatganiad cyhoeddus Swyddfa Gyhoeddiadau’r UE ar ailddefnyddio.
