The 711H uses both rate-of-rise and fixed temperature sensing. The 711H is a category A1R heat detector. A1 denotes a static response temperature of 54°C to 65°C (EN54-5). The suffix R denotes a rate-of-rise characteristic, but the fixed element provides a backstop for fires where the temperature builds up gradually.
The 700 series detectors are for use in conventional two wire detection systems, where detectors are normally connected in zones. Each detector samples the ambient air every five seconds and if a fire condition is detected, a signalling current is drawn from the zone causing the Control and Indicating Equipment (fire alarm panel) to provide an alarm response for that zone.
Key Features
Marine
Use both rate-of-rise and fixed temperature sensing
Category A1R heat detector
Designed for use in conventional two wire detection systems
Drop-in replacement for, and are backwards compatible with the legacy 600 Series
Approved by major classification societies for use on vessels
Superior performance, reliability and false alarm rejection
Low operational voltage
Compatible with 4B, 4B-D, 5B and 5B-D bases
Approval to EN54, MED and IACS
Ingress protection IP55 (installed with deck head mount)
