Air filters for general ventilation - Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured Ingestion-build-137917 The round nose broad-crested weirs

The round nose broad-crested weirs are round edges hydraulic structures that are utilized for controlling the depth

the measurements are made under normal operating conditions and at rated output power

Since the test method specified in BS 7393 requires substantially less sample than ISO 6618 or ISO 6619

Electromagnetic compatibility (EMC) - Part 6-1: Generic standards – Immunity for residential

45 GHz and 5

Air filters for general ventilation - Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured Ingestion-build-137917 The round nose broad-crested weirs1 Scope This part of ISO 16890 specifies the test equipment and the test methods used for measuring the gravimetric efficiency and resistance to air flow of air filter for general ventilation. It is intended for use in conjunction with ISO 168901, ISO 168902 and ISO 168904. The test method described in this part of ISO 16890 is applicable for air flow rates between 0,25 m3 s (900 m3 h, 530 ft3 min) and 1,5 m3 s (5 400 m3 h, 3 178 ft3 min), referring