{"id":8810,"date":"2023-05-23T12:47:16","date_gmt":"2023-05-23T04:47:16","guid":{"rendered":"https:\/\/palas.com.cn\/en\/?post_type=product&p=8810"},"modified":"2025-01-16T15:59:44","modified_gmt":"2025-01-16T07:59:44","slug":"lft-2000","status":"publish","type":"product","link":"https:\/\/palas.com.cn\/en\/product\/lft-2000\/","title":{"rendered":"LFT 2000"},"content":{"rendered":"
\n

ISO 29463-1 requires for all HEPA \/ULPA filters with an efficiency of 99.95% or higher (ISO 35H\/H13) the following test to ensure filter quality:<\/p>\n

\u2022\u00a0\u00a0\u00a0\u00a0local efficiency according to ISO 29463-4
\n\u2022\u00a0\u00a0\u00a0\u00a0overall efficiency according to ISO 29463-5<\/p>\n

The LFT 2000 combines the requirements of ISO 29463-4 Annex F for Class 35 H filters with a simple manual test procedure.<\/p>\n

The system manually detects possible leakage points easily and quickly with the appropriate software.<\/p>\n

The output of the test report is for local filter efficiency as well as for leak detection.<\/p>\n

 <\/p>\n

Norms and certificates<\/strong><\/p>\n

National and international standards<\/p>\n

ISO 29463-4<\/span>\u00a0ISO 29463-5<\/span><\/p>\n

 <\/p>\n

Operation principle<\/p>\n<\/div>\n

Manual scantest with for HEPA\/ULPA filter<\/h4>\n

The test system consists of the following components:<\/p>\n

\u2022\u00a0\u00a0\u00a0\u00a0Supply air duct with volume flow measurement and raw gas sampling
\n\u2022\u00a0\u00a0\u00a0\u00a0Horizontal filter holder (adapter for different filter sizes)
\n\u2022\u00a0\u00a0\u00a0\u00a0Aerosol generator
\n\u2022\u00a0\u00a0\u00a0\u00a0Sampling and integrated photometer for manual scanning by hand in the clean gas<\/p>\n

First, the intake air flows through the built-in filter at a defined volume flow rate. In the process, the particle counter measures the particle concentration and size on the raw gas side.<\/p>\n

Subsequently, the pressure drop is measured with a scan over the filter surface. At the outlet side, the operator guides the sampling probe across the downstream side of the filter. Thus, he scans the local emission and size of the particles in the clean gas using the particle counter. Leakage points are thus detected quickly and easily.<\/p>\n

The test report is generated after successful testing of the local filter efficiency.<\/p>\n

 <\/p>\n

Extensions\/Accessories<\/h4>\n

Aerosol generation<\/u><\/p>\n

We recommend the PLG 2100 H with Laskin nozzle for the highest constancy in aerosol generation<\/p>\n

Particle counters<\/u><\/p>\n

Optical particle counters with airflow of 28 l\/min (1 cfm), measurement range selectable either from 0.1 \u00b5m or 0.3 \u00b5m<\/p>\n

Scanning Probe<\/u><\/p>\n

Specially designed according to ISO 29463 for scanning velocities up to 5 cm\/s (or 0.093 m\u00b2\/min)<\/p>\n

Scanning unit<\/u><\/p>\n

Manual scan<\/p>\n

“Worry-free package” for delivery<\/u><\/p>\n

Acceptance at Palas\u00ae<\/sup>\u00a0as well as delivery, installation, instruction, and final approval on-site<\/p>\n","protected":false},"excerpt":{"rendered":"

\u200b\u200bManual scantest for HEPA\/ULPA Filter comparable to ISO 29463-4 Annex F with a particle counter\u200b<\/p>\n","protected":false},"featured_media":8780,"template":"","meta":[],"_links":{"self":[{"href":"https:\/\/palas.com.cn\/en\/wp-json\/wp\/v2\/product\/8810"}],"collection":[{"href":"https:\/\/palas.com.cn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/palas.com.cn\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/palas.com.cn\/en\/wp-json\/wp\/v2\/media\/8780"}],"wp:attachment":[{"href":"https:\/\/palas.com.cn\/en\/wp-json\/wp\/v2\/media?parent=8810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}