T9731 Lektest av kirurgiska masker - Högpresterande flödestestinstrument med kontinuerlig mätning för EN 14683

The T9731 is specifically designed for measure the adequate air flow rate in complete adherence to the standard EN 14683 for surgical masks testing. As shown in diagram C.1 on page 12 of the standard EN14683 , the instrument is equipped with two air flow meters of type Mass-flow with scales 0.0...20.0 nLitres/minute (2.12 of diagram - point C.2.1) servo driven valve controlled from the software (10 of the diagram - point C.2.4), and a double gauge / differential pressure measurement (M1 and M2) as expressly indicated in point C.2.2 . In order to comply with both the ISO accreditation standards and the expectations of the reference standard, the pressure measurements in “Differential" mode (or pressure drop) occurs in Pa or Pa/cm2 in case the sample area is set in the menu TST with area different from 1.00 cm2. The connecting "short form" attached to the manuals providesconnection to an external vacuum pump (C.2.3), not provided.