AFC 132 QC HEPA Test System

AFC 132 QC HEPA Test System for quality control during production of small HEPA filter elements

This air filter test system is designed to meet requirements of EN1822-4 and ISO 29463-4, Appendix E “efficiency leakage test for particle sizes from 0.3 µm to 0.5 µm”.

This part of the standard is related to filter elements which cannot be scanned due to their geometrical design. In this case determination of integral filtration efficiency is sufficient for quality control.

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Standards

EN 1822-4/E
EN 1822-5
ISO 29463-4/F
ISO 29463-5

Download topas-132-AFC-QCHEPA-productsheet-en-2.pdf

Benefits

compact test system design
designed for 24/7 production operation
fast cycle time (30 s) for short test time per filter
customized filter adapter for different small HEPA filter elements, easy to change (5 min)
high degree of automation for minimum operator interactions
free configuration of target filter efficiency

FAQs

Principle

In comparison to the alternative oil thread test procedure this method gives much more reliable and much faster results on defective filter elements. Furthermore filters are much less loaded by test aerosol from the test procedure.

The required test aerosol is produced by a special aerosol generator (ATM 221) using standard DEHS test liquid. For upstream concentration measurement an optical particle counter is used in combination with cascaded self-adjusting dilution systems (DIL 540/C). A parallel optical particle counter determines downstream particle number concentration. Resulting filter efficiency is compared to nominal filter efficiency giving a final “pass” or “fail” result to each tested filter.

Technical data

Parameter Title	Unit	Value
test flow rate	m³/h	25 ... 130
test cycle duration	s	30
measuring range, differential pressure	Pa	0 .... 3000 (± 1 % final value)
dimension of test specimen	mm	max. 300 × 300 × 300
power supply	-	3 x 400 VAC, 50/60 Hz, 16 A
operating medium, aerosol substance	-	customer-specific (DEHS, paraffin oil, NaCl, ...)
particle measurement instruments	-	particle counter ( 4 channels or 8 channels) with vacuum pump
sensors, others	-	temperature, relative humidity, air pressure
dimensions (w × h × d)	mm	2000 × 1500 × 1000
weight	kg	approx. 600

AFC 132 QC HEPA Test System

AFC 132 QC HEPA Test System

Standards

Benefits

Applications

FAQs

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