Test instruments - Import export

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.

The new Dual Absolute technology makes it possible to eliminate the disadvantages of a classic differential system, improve its advantages and renew an industry that has been standing still for decades. Thanks to the new Dual Absolute technology, ForTest has combined the simplicity of a classic absolute decay system with the precision and sensitivity of a differential system, bringing leak testing instruments to a level never seen before. The new algorithms and measurement hardware eliminate typical defects in a differential system, such as differences in stabilization between the test part and the reference sample. The new range of instruments is able to work in 3 different ways: Pure Differential, Dual Absolute and Central Zero. The new Dual Absolute technology is so powerful and reliable that ForTest has decided to stop developing the classic differential system.