19-4880; Rev 11/09
The iButton Capsule is a mechanical enclosure to
protect Temperature Logger iButtons (DS1921 and
DS1922 series) from moisture, solvents and
pressure. It provides IP68 protection to the iButton
inside (refer to Application Note 4126: Understanding
the IP (Ingress Protection) Ratings of iButton Data
Loggers and Capsule). The protection level exceeds
the “Water Resistant 3 ATM” requirements.
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, e.g., to
measure temperature at different levels within a
liquid. 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
sulfide (PPS). This material is chosen for its
mechanical properties (remains stable during both
long and short-term exposure to high temperatures),
inherent flame resistance, and outstanding chemical
resistance (inert to steam, strong bases, fuels and
acids). 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
Seawater temperature profiling
Monitoring of beverage production
+Denotes a lead(Pb)-free/RoHS-compliant product.
All dimensions are in millimeters.
iButton is a registered trademark of Maxim Integrated Products, Inc.
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