DS9107+

The DS9107+ is an iButton capsule. It is a mechanical enclosure to protect temperature logger iButtons (DS1921 and DS1922 series) from moisture, solvents and pressure. The DS9107 consists of a base with the cavity for a F5 iButton, a screw-in plug with o-ring to seal the enclosure and a top with two stainless steel screws to mount the iButton capsule to a cable. The cable is inserted into the notch of the plug where it is held in place by the matching protrusion of the top piece. Base, plug and top are made of polyphenylene sulphide (PPS). This material is chosen for its mechanical properties, inherent flame resistance and outstanding chemical resistance. Although PPS is virtually insoluble below 200°C, it can be attacked by chlorinated hydrocarbons. The silicone o-ring matches the temperature and chemical qualities of the PPS. In addition, it is resistant to sunlight, ozone, oxygen and UV light. The chemical stability of the screws does not compromise that of the PPS and the silicone.