Brooks Instrument MT3810 - Manual (Page 24)

Model MT 3810
Installation and Operation Manual
X-VA-MT3810-eng
Part Number: 541B050AAG
December, 2008
Section 1 Introduction
1-18
Explosion- proof/ Flame-proof
United States and Canada UL Listed, E73889, Vol. 1, Sect. 14
Class I, Division 1, Groups C, D;
Dust Ignition-proof, Class II, Division 1, Groups E, F, G; Class III; T4
Europe – KEMA 01ATEX2207 X
II 2 G EEx d IIB T4
II 2 D T135
o C
Power Supply
5-25 Vdc; 25 mA max.
Impedance
Approximately 1 kohm with cam absent
Approximately 8 kohm with cam present
Alarm Wiring Diagrams
Explosion-proof/ Flame-proof: Refer to Figure 7
Intrinsically Safe or Non Incendive: Refer to Figures 10 and 11.
For Division 1 explosion proof installations, the optional explosion proof
enclosure must be used. This enclosure does not use the auxiliary terminal
box, as shown on some of the installation diagrams. All connections are made
directly within the housing. Cable entry device shall be certified as Flame-
proof type, suitable per the conditions of use and correctly installed. If used
with conduit, refer to Figure 7, a sealing device shall be provided in accordance
with Figure 7.
For Division 2 non-incendive installations, either the standard enclosure or
the explosion proof enclosure may be used.
For both Division 1 explosion proof and Division 2 non-incendive installations,
the barriers shown in the installation drawings are unnecessary. However,
NEC Class 2 circuits are required.
The circuits shall be wired separately or using a Multicore Cable Type B, in
accordance with EN 60079-14. Also wiring must be done in accordance with
the applicable electrical codes, ie., NEC Chapter 5, CEC Section 18 and any
local codes.
Alarm Accessories
Amplifier Power Supply (approved isolated barrier) 1 or 2 channel approved
for intrinsically safe application, remotely mounted, 115 or 230 Vac power.
Single pole with double throw (SPDT) relay standard. For other configurations,
consult factory.