Schlesinger W
Z Gesamte Hyg. 1989 May;35(5):262-3.
For dust measuring instruments which are used in industrial hygiene-according to standards there were required certain limited controls of the measurements validity. There is, however, no testing tool available, suitable for the applicants, for a gravimetric dust measuring instrument. It is proposed a measuring cyclone for industrial routine, which can be prepared and graduated with little effort. Examinations of the instruments SPG 10 and SPG 210 so far have shown a close dependence between the volume flow and the resistance to flow of the specific dust filter. The volume flow, actually effective for the grain fraction's separation of the airborne dust into certain parts of coarse dust and lung damaging fine dust in the dust precipitator's first stage may be inadmissibly different from the nominal flow. It is therefore proposed in addition to the necessary check of the measuring devices to establish the relation between volume flow and filter covering for every instrument.
对于工业卫生中使用的粉尘测量仪器——根据标准，需要对测量有效性进行某些有限的控制。然而，对于申请人来说，没有适用于重量法粉尘测量仪器的测试工具。本文提出一种适用于工业日常使用的测量旋风分离器，它可以轻松制备并进行校准。到目前为止，对SPG 10和SPG 210仪器的测试表明，体积流量与特定粉尘过滤器的流动阻力之间存在密切关系。在粉尘沉淀器的第一阶段，对于将空气中的粉尘分离成粗粉尘和对肺部有害的细粉尘的特定颗粒部分实际有效的体积流量可能与标称流量存在不可接受的差异。因此，除了对测量装置进行必要的检查外，还建议针对每台仪器确定体积流量与过滤器覆盖之间的关系。
