Fiber Optic Linear Heat Detectors (FO LHD)

Specifications Overview

Optromix offers different types of Fiber Optic Linear Heat Detectors (FO LHD). Our experts are able to develop any fiber optic design based on your desirable requirements and needs.

Fiber Optic Linear Heat Detector LHD-1-4

LHD-1-4 detects fires along a fiber optic cable, based on parameters selected via user interface. Determination of the fire location allows to identify the area (room) where fire is detected, even when the cable is destroyed as a result of the fire. Two cable types can be used:

– with LSZH jacket – for operating temperatures up to 80°C

– with silicone rubber jacket – for operating temperatures up to 200°C

Max length of fiber optic cable, km	4
Spatial resolution, m	4
Max number of controlled areas (zones, rooms)	1000
Temperature resolution, °C	+/- 2
Sampling time, sec	6
Fiber type	MM 62.5/125
Operating temperature, °C	-40...+200
Number of internal relay outputs	32
Interface	Dry contacts
Max resistance of closed relay contacts, Ohm	30
Power supply, V	10 - 29
Current, A	0.45 - 0.9
Protection class	IP54
Dimensions, mm	500 * 350 * 190
Weight, kg	2.0

Fiber Optic Linear Heat Detector LHD-2-8

LHD-2-8 detects fires along a fiber optic cable, based on parameters selected via user interface. Determination of the fire location allows to identify the area (room) where fire is detected, even when the cable is destroyed as a result of the fire. Two cable types can be used:

– with LSZH jacket – for operating temperatures up to 80°C

– with silicone rubber jacket – for operating temperatures up to 200°C

Number of channels	2
Max length of fiber optic cable, km	8
Spatial resolution, m	4
Max number of controlled areas (zones, rooms)	2000
Temperature resolution, °C	+/- 2
Sampling time per channel, sec	8
Fiber type	MM 62.5/125 or MM 50/125
Operating temperature, °C	+10...+55
Max number of relay outputs	up to 240 (including 34 internal)
Interface	RS-232
Max resistance of closed relay contacts, Ohm	30
Power supply, V	10 - 29 or 220
Current, A	0.45 - 0.9
Protection class	IP54 or IP66
Dimensions, mm	500 * 500 * 216
Weight, kg	15