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Installation
October 2021
2. Connections to the intrinsically safe (I.S.) port on the side of the detector enclosure
3. Where Um marked on the associated apparatus is less than 250 V, it shall be
4. The output of the optical radiation source with respect to explosion protection
5. Upon installation, remove the plastic transit plug from the cable entry and use a
6. Equipment is only to be installed by manufacturer trained personnel.
7. Equipment has only been tested for electrical safety. No evaluation of functional
8. The equipment shall be supplied with Limited Energy Circuit (LEC) as defined in CSA
38
Flamepath
Type of joint
description
Cylindrical section of
Cylindrical
spigot (both ends of
Ex d compartment)
30 mm diameter
Flanged
window fitted
against enclosure
39.5 mm diameter
Flanged
window fitted
against enclosure
Gaps shall not be machined to be any larger than the values of "ic", and widths shall
not be modified to be any smaller than the values of "L" shown in the table above.
shall be made via equipment which maintains the intrinsically safe levels of
protection.
installed in accordance with one of the following:
•
Where Um does not exceed 50 Vac or 120 Vdc, in a SELV or PELV system or
•
Via a safety isolating transformer complying with the requirements of CAN/CSA-
C22.2 No. 66.1 or technically equivalent standard or
•
Directly connected to apparatus complying with CAN/CSA-C22.2 No. 60950-1,
CAN/CSA-C22.2 No. 61010-1 or technically equivalent standard or
•
Fed directly from cells or batteries.
meets Exception 3 from the scope of CAN/CSA-C22.2 No. 60079-28:16 Ed.1.
cable fitting or a conduit fitting with the following specification to connect the
cable to the equipment:
•
Ex marking: Ex eb IIC Gb, Ex tb IIIC Db
•
Temperature rating: -55 °C to +83 °C or better
Connecting thread: M25 x 1.5 or ¾-in. national pipe thread (NPT)
•
safety and performance characteristics has been conducted.
C22.2 No. 61010-1-12 or Limited Poweer Source (LPS) as defined in CAN/CSA C22.2
No. 60950-1.
Reference Manual
00809-0100-4036
Minimum width "L"
Maximum gap "ic"
(mm)
(mm)
15
0.08
10.7
0.02
10
0.02
Emerson.com/Rosemount
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