Emerson Rosemount 936 Reference Manual page 37

Reference Manual
00809-0100-4036
5.4.2 Special conditions for safe use from ATEX IECEx
certificate
The dimensions of the flameproof joints differ from the relevant minimum or maximum
values required by Table 2 of IEC/EN 60079-1: 2007 for IIB + H
Table 5-3: Flamepaths
Flamepath description
Cylindrical section of spigot
(both ends of Ex d
compartment)
1.2-in. (30 mm) diameter
window fitted against
enclosure
1.6-in. (39.5 mm) diameter
window fitted against
enclosure
• Gaps, "i
modified to be any shorter than the values in
• Connections to the intrinsically safe (I.S.) port on the side of the detector enclosure
should be made using equipment that maintains the intrinsically safe levels of
protection.
• The Um should be installed in accordance with one of the following:
—
—
—
—
• If the product is to be used as a safety related device, an appropriate independent
certification, would be required meeting all the requirements.
5.4.3 North American conditions of acceptability from
certificate CSA 80023016
Conditions for Canadian installations
1. The dimensions of the flameproof joints are other than the relevant minimum or
Rosemount 936
Type of joint
Cylindrical
Flanged
Flanged
", should not be modified to be any larger, and widths, "L", should not be
c
The Um is 18 to 32 Vdc in a SELV/PELV system.
Via a safety isolating transformer, complying with the requirements of IEC
61588-2-6 or technically equivalent standard.
Directly connected to apparatus, complying with IEC 60950, IEC 61010-1, or
technically equivalent standard.
Fed directly from cells or batteries.
maximum values required by Table 2 of CAN/CSA-C22.2 No. 60079-0:19 Ed. 4 for
IIB + H2, as detailed below:
Minimum width "L" in
inches (millimeters)
0.59 (15)
0.42 (10.7)
0.39 (10)
Table 5-3.
Installation
October 2021
, as detailed in Table 5-3.
2
Maximum gap "i " in inches
c
(millimeters)
0.003 (0.08)
0.001 (0.02)
0.001 (0.02)
37