【BSEN16479-2023】-对标部分

4 General requirements for samplersSee 6.3 for details on verification by inspection.Asampler shall:a)have a unique designation that unambiguouslyidentifiesit (eg model,serialnumber);b)be designed (induding its operating methodology)and constructed to ensure that the compositionof the sample is,as far as is practicable,not altered by the sampling procedure;BSEN16479:2023EN16479:2023E)It can be impracticable to prevent the loss of volatile substances during sampling with vacuum andperistalticsamplersc)have a rated maximum lift height at which all of the performance requirements of this document arefulfilled The rated maximum lift height shall be inscribed on thesampler or declared in the operatingmanual published by the manufacturer,Conformity testing of the sampler shall be based on a range of lift heights up to and induding thesampler'srated maximum lift height.d)have provision for the user to set the volume of a discrete sample;e)have rated minimum and maximum set sample volumes of a discrete sample inscribed on thesampler or declared in the operating manual published by the manufacturerf)have the stated capacities,for any integrated sample storage,both by number(s)and volume(s)ofindividual bottles and of a composite container,inscribed on the sampler or declared in the operatingmanual published by the manufacturer:g)be capable of collecting a series of samples,on a timed,event and/or a flow proportional basis.Samples can be collected and stored in individual bottlesor a single composite sample bottle;h)have its possible sampling intervals inscribed on the sampler or declared in the operating manualpublished by the manufacturer;i)have provision for the user to set the sample interval as a minimum in the range 5 min to 1 h withincrementsof1min,for time proportional samplersi)have provision for the sample interval(in the case of CV.V.T.sampling)or the sample volume (in thecase ofC.T.V.V.sampling)to be set on the basis of a flow signal (eg pulse or analogue)from a flowmeter.For pulse inputs,the relationship between pulse input and sample interval or volume shouldbe adjustable as a minimum over the range 1 pulse to 999 pulses in increments of 1 pulse;k)have a control unit capable ofrecording sample collection failures;I)have a control unit capable ofrecording any bw battery alarm during sample collection;m)be designed to minimize the possibility ofclogging of the sample line by suspended solids in wastewater.The nominal internal diameter of the sample line shall be not less than9 mm and the averagesample line velocity shall not be less than 05 m/s The sampler shall be capable of achieving thisaverage sample line velocity at all lift heights up to and induding its maximum rated lift height at allrated operating voltagesThe requirement on sample line diameter exdudes pipe restriction caused by the normal operation ofpinch valves and peristaltic pumps.National legal requirementscan specify different minimum values for internal sample line diameter and