Emerson Rosemount FS-UVIR-975 Reference Manual page 25

Reference Manual
00809-0800-4975
7.5.1 Specific conditions of use
The dimensions of the flameproof joints are other than the relevant minimum or
maximum values required by Table 3 of IEC/EN 60079-1:2014 for IIB + H
below.
Table 7-1: Minimum and maximum widths
Flamepath description Type of joint
Joint formed by window
against the enclosure
Enclosure end-cap
spigot
Gaps must not be machined to be any larger than the values of ic, and width must not be
modified to be any smaller than the values of L shown in the table above.
The equipment must only be charged in a safe area with the batteries removed from the
flameproof enclosure. The charge conditions are as follows:
Maximum charge voltage: 16.8 V
Maximum charge current: 4 A
The charge voltage must not exceed these values.
Rosemount FS-UVIR-975
Minimum width L
Flanged 0.4232 in (10.75 mm)
Cylindrical 0.59 in (15 mm)
Product certifications
May 2022
, as detailed
2
Maximum gap ic
0.0008 in (0.02 mm)
0.0031 in (0.08 mm)
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