What is maximum acceptable length of tube of particle counter.
It should not be more than 1 meter.
1 Like
How to determine sampling points in a room for particle count?
Basic functions of HVAC?
Classification of pre filters?
G1,G2,G3,G4,M5,M6,F7,F8,F9,E10,E11,E12 are type of pre filter.
HEPA filter-H13,H14
ULPA filter-U15,U16,U17.
What is scanning rate of HEPA filter during PAO test?
0.003 Percent
I mean The probe traverse scan rate (Sr) for photometry scan test.
The filter media is scanned at how much distance from the filter face?
if result of integrity test of H13 HEPA filter by PAO is 0.02% then result will be pass or fail?
What is the mean diameter of PAO droplet?
3mm distance
Fail mean filter leakage
0.3 micron
0.02% penetration is acceptable or not?
0.35 micron
ISOEN14644-3 has made the particle counter and photometry scan test the same speed and this is defined as: The probe traverse scan rate (Sr) should be approximately 15/WP cm/s. (WP is the width of the probe at 90° to the direction of the scan) For example, when using a 3cm square probe, Sr is 5cm/s.
1 Like