EN 12919:1999 Workplace Atmoshperes - Pumps for the Sampling of Chemical Agents with a Volume Flow Rate of over 5 l/min - Requirements and Test Methods
This European Standard specifies the performance requirements for pumps used withinThe scope of measuring methods forThe determination of the concentration of chemical agents inThe workplace atmosphere.The pumps considered inThis standard are mainly used for aerosol sampling.This standard is valid for pumps with a nominal volumetric flow rate withinThe range 51/min to 4001/min.This standard applies to electrically driven pumps and also to air movers, which induce air flow withThe aid of another mechanism, such as pressure drop across a critical nozzle.The standard applies to pumps which:—are attached to a person and connected toThe sampler by means of tubing during sampling;—are stationary and connected toThe sampler by means of tubing during sampling;—are built into sampling apparatus which is either attached to a person or is operated in a stationary position.This standard applies to pumps whose nominal volumetric flow rate can be kept constant by an automatic controller ifThe flow resistance changes during sampling.The control range shall be specified byThe manufacturer.This standard also applies to pumps which are operated at a constant nominal volumetric flow rate, sinceThey work at a constant flow resistance pressure drop during sampling (e.g. pumps with rotating cups).For pumps which are attached to a person during sampling, ergonomic requirements like maximum mass should be taken into account.These requirements are not specified inThis standard in detail, but should be considered byThe manufacturer when constructing a pump
EN 12919:1999 history
1999EN 12919:1999 Workplace Atmoshperes - Pumps for the Sampling of Chemical Agents with a Volume Flow Rate of over 5 l/min - Requirements and Test Methods