Special purpose dehumidifier

Rosahl is a special purpose dehumidifier used by original equipment manufacturers (OEMs) to protect electronics, optics, artefacts and other sensitive items from moisture damage. It uses an ultra compact solid state ionic membrane to actively expel moisture from the cabinet or enclosure.  It can reduce relative humidity to below 10% if required, and can also be used as a humidifier. ROSAHL was developed by Mitsubishi Electric Corporation Group member Ryosai Technica Company in Japan in response to a demand for compact maintenance free, air drying solutions to protect sensitive equipment from...

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New enclosed Rosahl products

To simplify the installation of Rosahl membranes the new Separates Range comprises three sizes of Rosahl membranes installed in steel enclosures ready for mounting in your equipment.  A separate humidistat is also available.  The Separates Range does not include an ac power supply which should be purchased locally in conformance to local regulations. Rosahl Separates Range Model S-5T1 S-7T1 S-10T1 Dehumidification capacity (g/day) 8 16 29 Applicable volume m³ <1 <2 1-4 Device voltage 3V dc 3V dc 3V dc Power consumption(W) annual average 3 4 8 Dimensions (mm) 110x130x30 138x150x30...

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Rosahl Panel Dehumidifier

The Rosahl panel dehumidifier utilises porous electrodes on each side of a hydrogen-ion conductive electrolyte film, to transfer moisture from the inside of a cabinet to the outside and thus dehumidifying it. In terms of energy, approximately 2% of the heater system and 20% of the Peltier system are required, making the life time cost of ownership much lower: for example, the ROSAHL is capable of dehumidifying 2m³ of a control panel using only 5W, whereas the heating and Peltier systems require 250W and 25W, respectively.   Moreover, the ROSAHL has no moving mechanical components and...

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Easy install micro dehumidifier for small cabinets

Lightweight moulded model Westside International has introduced the RDH-3P1, an easy to install,lightweight moulded version of Rosahl that combines a solid-state micro dehumidifier with a power supply suitable for 85-264 volt applications.  It is designed to be installed to the inside side wall of a cabinet and removes moisture  through a 35 x 35mm cut-out. This model is CE marked and RoHS compliant.  Click here for outline drawing It is designed for dehumidifying sealed enclosures up to 350 litres.  The Rosahl RDH-3P1 is a very effective dehumidifier that can dry air down to 10% RH.  For...

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Dehumidifier for very small applications

At a quarter the size of a standard AA battery, the latest PD3 micro dehumidifier from Rosahl is designed for very small spaces and is easily installed in a fine pitchM12 screw-in mounting (M12 P0.5). ROSAHL is a unique solid state dehumidifier. By applying a low voltage DC supply to its solid polymer electrolyte (SPE) moisture disassociates into hydrogen ions and oxygen and is expelled to the outside of the enclosure. It makes no noise, doesn’t wear out, requires no maintenance, is very small and cheap to run. PD3 is the smallest in a line of dehumidifiers suitable for enclosures up to...

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