Figure 1 : General Assembly of Vortex Modules
2.2.2 Input/output capability
The Vortex system is a control panel for gas and fire detectors. It can be used with the following
detectors:
• 2 wire sink, or 3 wire sink or source 4-20mA detectors. Crowcon manufactures a wide range of
flammable and toxic gas detectors and oxygen detectors. See Appendix D for the Crowcon range.
The detectors of many other manufacturers can also be used, including 4-20mA fire detectors,
however the behaviour of these detectors should not be confused with that of the conventional
loop powered fire detectors referred to throughout this manual as Fire Detectors.
• Conventional loop-powered fire detectors and manual call points (up to twenty devices) with a
maximum loop current of 60mA. Only 1 fire loop may be connected to each Quad Channel Input
Module. Vortex has been tested for use with the Series 60 range of smoke detectors available
from Apollo. Other manufacturers’ detectors, for example, the Thorn MS302Ex flame detector,
may also be used. Contact Crowcon for further details.
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