Modern technoliges offer new scopes for development. We offer ulta modern rapid prototyping solutions for pre-series runs, design verification and for the production of individual filters. Within shortest time we can model your filterselements and produce filtercases from plastics to fit in various filter media. As basic material for the cases we use PLA or ABS. This process is especially suiting the requirement for smaller dimensionised filters for process air handling or equipment technoligies. Feel free to use our competitive service for your development of series products.

No matter if you whish to create hexagonal filter or other special cartridges - we'll make it real.

Please contact our sales engineers for design and construction.

Sometimes things are very different as they seem. To avoid bad suprises we use several CFD tools to stay on track with filter developments. We offer our experience and simulation capacity to customers during cooperating development pojects with our customers.

Example of a flow and particle distribution at a pre-filter sand trap at particle size 10 µm and 1,7 m/s air velocity:

The HS-Probesampler is used for sampling activated carbon and other sorbent bulk beds. Regular laboratory monitoring is required for safety-relevant sorbtion applications such as the exhaust air filtration of radioactive or highly toxic gases. The HS-Probesampler made of stainless steel 1.4301 allows piercing even in tightly compacted pouring beds. It is therefore ideally suited for sampling powders, granulates and broken carbons.

For changing filters at safety relevant systems it is reccomended to perform a leak test with HEPA filters either after installation or just before mounting. Beside the usual particle measures with optical or CPC counters there's also the option to perform an oil fog test according to EN1822-4 to prove the integrity of the filter.

HS-Luftfilterbau GmbH offers a mobile and robust testsystem which gives reliable results. The HS-Fogtester consists of a rigid stainless corpuis and easy to handle oilfognenerators. The fog is generated from parafinoil and has a major particle concentration at 0,2 - 0,5 µm. The fog is pressed throgh the filter by compressed air. A special lightsource is provided with the tester to iluminate and visualize penetrating particles against a contrast surface in the back of the tester.

All leakages of HEPA filters in EN1822 classes H13 and H14 can be detected by this method quick and securely.

Filters of lower classes such as finedust and EPA filters can't be tested successfully due to their high penetration rate. This test should not be used for filters of classes of EN 1822 U15 and higher.

This testsystem requires in opposition to ususal particlecounters extremely low maintenance, is very robust and is not required to be calibrated.

The use of leakage testers provides additional safety when replacing filters. With help of the HS-Leakage Tester combined with a leakage monitoring grove correct and leak free fitting of filter media is guaranteed.

Datasheet

The HS-Differential Pressure Transmitter (HS-DPT) detects the differential, positive and negative pressure between the two pressure inputs and converts the measured value into a linear or square-root output signal of 0(4)...20 mA or 0...10 V. In this way, an
statement can be made about the degree of loading of filters and transmitted, for example, to a control system or control station. The converter is offered in three variants (see below).

Thanks to ATEX approval, use in dust-laden and potentially explosive environments is possible without any problems.

Datasheet

Filters have to be replaced when the suggested end pressure has been reached. Depending on the application, due to toxic or hazardous substances contamination free filter replacement is essential. To ensure contamination free filter exchange we recommend the use of the bag-sealing tool in conjunction with a mobile, height adjustable HS-Service trolley.

Datasheet

Filterchanges of big filter units may require to losen and re-fit 400 - 600 starscrews. Doing this by hand whilst wearing full protection can be very longsome and exhausting. When using our HS-X-Screw dill adapter this work is done much more relaxed in a fraction of the usual time.

A must for a contamination-free filter replacement is this robust maintenance bag made from PE. We also offer o-rings for proper fixation in various sizes or special variants with arm sleeves.

Also available from HS-Luftfilterbau: inclined tube and U-tube manometer stations as well as analogue and digital gauges and pressure switches.

• analogue pressure gauge,
• inclined tube manometer,
• U-tube manometer,
• digital pressure gauge,
• EX protected devices.

Please ask your sales team for more details.

We supply:

• refillable measuring liquids for inclined and U-tube manometer,
• tubes and hoses to connect measuring devices made from:
  
  • PE
  • PU
  • Neoprene
  • Silicone
• connector fittings
• sealing caps

We offer BFM® Fittings for various production and handling processes. BFM® Fittings offer a patented snap-in mechanism which offers 100% particle tightness. A change of the connectors or their removal whlist batchchange can be done without requirering any tools.  The upper and lower spiral-springs offer an integrated gasket and can be clamped into the connection fitting s by hand - quick, esays & safe.

Before hose clamp with textile connector	After BFM® Fitting with hygienic connector

Most various options are available:

We make sure you‘ll have the right „drive“. HS-Luftfilterbau also offers drive-belts for ventilation systems of all kinds. Please ask our sales team for a competative offer.