Crowcon Vortex - Diagram 4 A

Appendix F Vortex Manual
78 Issue 7 December 2009
APPENDICES
Diagram 4A
Gas sensor connection to Vortex via a zener barrier.
Quad
Channel
Input
Module
2,5,8,11
3,6,9,12
Connection to Vortex chassis
by cable gland
Sensor
3 +
4 -
example: TXgard-IS
3
4
1
2
Zener barrier
Earth
bar
IS
Earth
Vortex
NOTE: The Vortex 0V line is connected to
earth internally by the barrier.
example: MTL 728
HAZARDOUS AREA
SAFE AREA