Emerson Rosemount FS-UVIR-975 Instruction Manual page 19

Introduction
Table 1-2:
Flamepath description
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: 4.2 V per cell
Maximum charge current: 2,200 mA
The charge voltage must not exceed these values.
Inspection and maintenance of this equipment should be carried out by suitable trained
personnel, in accordance with the applicable code of practice, e.g. EN 60079-17.
Repair of this equipment should be carried out by suitable trained personnel, in
accordance with the applicable code of practice, e.g. EN 60079-19.
8
Minimum and maximum widths
Type of joint
Flanged
Cylindrical
Minimum width L (mm)
10.75
15
Maximum gap ic
(mm)
0.02
0.08