New Rosahl mounting plates introduced

In response to customer requests, we have introduced a new range of optional Rosahl mounting plates fabricated from stainless steel.  Also available are rubber (ethylene propylene) packers. We recommend that a packing sheet (gasket) is fitted to both sides of the membrane to reduce moisture ingress and ensuring a reliable installation.  The retainer plates should be fixed using M4 screws, with care taken to ensure the membrane terminals are adequately distanced or insulated from the panel surface. When installing in an outdoor panel fitted...

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Rosahl low temperature dehumidifier operates below freezing

  The Rosahl membrane dehumidifier is designed to work below freezing and effectively throughout its operating temperature range of below -20C to +50C (-4 to 122F). Operating below freezing is unusual for an electrical dehumidifier, but Rosahl membrane dehumidifiers are not affected by the freezing point of water as they operate at the molecular level. Rosahl works like an ionic pump and is often referred to as an ionic membrane dehumidifier.  When a low voltage (3V D.C.) is applied to the membrane, the moisture on the inside of the...

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Specification change to lightweight moulded model RDH-3P1

 Specification change to lightweight moulded model RDH-3P1 The RDH-3P1 is an enclosed version of the Rosahl membrane dehumidifier and a matched power supply in a simple lightweight moulded plastic enclosure and comes complete with a power lead.  This model is CE marked and RoHS compliant. The RDH3-P1 has a dehumidifying capacity of 2.9 grams of water per day, making it suitable for sealed enclosures up to 350 litres.  The weight is 250 grams and the operating temperature range is -10 to +50 C.  The unit has an annual average power consumption...

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Solid-state micro dehumidifiers at Photonex 2013

Solid-state micro dehumidifiers at Photonex 2013     Rosahl solid-state micro dehumidifiers will be exhibited in the UK for the first time at the Photonex 2013 Exhibition and Conference in Coventry at the Ricoh Arena on 16 and 17 October 2013. Rosahl was developed in response to a demand for compact, maintenance free, air drying solutions to protect sensitive devices from moisture damage. Designed for industrial and commercial applications, Rosahl offers a new way to protect sensitive optical and electronic devices from moisture....

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How do ionic membrane dehumidifiers compare?

High levels of water vapor or moisture can lead to extensive damage of natural materials, electronics, optics and many other equipment and products so how do ionic membrane dehumidifiers compare with the alternatives? If you think about it, removing water vapor is a lifetime’s work and the solution need to be efficient and cost effective. The two most popular methods of removing moisture from enclosures and small spaces are absorption and condensation.   Other popular methods include heat rods and air purging: all have advantages and...

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Rosahl ionic membrane dehumidifier on YouTube

    Designed for industrial and commercial users, the Rosahl ionic membrane dehumidifier offers a revolutionary way to protect sensitive optical and electronic devices from moisture damage, and now you can watch air dry on our two minute video on YouTube. Rosahl uses an electrolytic membrane to remove moisture at a molecular level when a 3 volt dc supply is connected.  The moisture is expelled as a gas: water is not produced and there is no need for cleaning or draining.  The membrane will also last for up to eight years before it...

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