EPC Epaco E10-0066 - Exhibit 4-8 Detection Circuit 3 - NC (Class A); Exhibit 4-9 Detection Circuit 3 - NC (Class B)

FIKE CORPORATION
Page 8 of 32 Fike Explosion Protection System FM 3020541
10/06 P/N E06-051 Rev. 8
Twisted Pair
Device
Contact
Series
2v4
Additional Alarm Initiating Devices
Alarm
Contact
Initiating
Drain Wire
Shield
+
++
- -
-
P3
N/C
Alarm
Contact
Initiating
N/C
1st
Last
820 ohms
End of Line
Device
No termination
of Shield Wire
[ insulate ]
2.4 volt zener diode
Twisted Pair
Device
Contact
Series
2v4
Additional Alarm Initiating Devices
Alarm
Contact
Initiating
Drain Wire
Shield
+
++
- -
-
P3
N/C
Alarm
Contact
Initiating
N/C
1st
Last
No termination
of Shield Wire
[ insulate ]
2.4 volt zener diode
Exhibit 4-8 Detection Circuit 3 – NC (Class A)
Exhibit 4-9 Detection Circuit 3 – NC (Class B)