HID Lumidigm M Series, Mechanical Integration Manual

Page: 10 / 28

Lumidigm M-Series M3xx Modules Mechanical Integration Guide, PLT-02217, Rev. A.0
December 2014 Page 10 of 28
The enclosure is constructed from plastic which can be deformed by incorrect or poorly-
designed mounting. Thus, while the design itself is resilient, care must be taken while
mounting to ensure that pressure is sufficient to seal the platen area but not so excessive
that the M3xx sensor head enclosure is deformed.
The overall dimensions of the M3xx sensor head are shown in Figure 7 and a complete 3D
CAD model of both the M3xx sensor head (as well as the M30x and M31x ECUs) are
available from Lumidigm to support design activities.
Figure 7: Sensor head dimensions
The top surface of the Lumidigm sensor head has been designed to satisfy the
requirements of International Protection Rating 65 (IP65). The nature of the interface
between the top surface of the sensor and the customer’s enclosure as well as all the
design elements of the enclosure would determine the IP rating of the resulting
construction. Because the M3xx platen seal is IP65, enclosures can be designed up to this
rating.