ÖNORM EN 12919

This European Standard specifies the performance requirements for pumps used within the scope of measuring methods for the determination of the concentration of chemical agents in the workplace atmosphere. The pumps considered in this standard are mainty used for aerosol sampling. This standard is valid for pumps with a nominal volumetric flow rate within the range 5 Ilrnin to 400 Ifmin. This standard applies to electrically driven pumps and also to air movers, which induce air flow with the 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 to the sampler by means of tubing during sampling; - are stationary and which are connected to the sampler by means of tubing during sampling; - are built-in 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 if the flow resistance changes during sampling. The control range shall be specified by the manufacturer. This standard also applies to pumps which are operated at a constant nominal volumetric flowrate, since working 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 in this standard in detail, but should be considered by the manufacturer when constructing a pump.