The MI-LPB2 is an addressable reflector- type linear optical
beam smoke detector, designed to operate as a component
of an intelligent fire alarm system. It operates primarily
on the principle of light obscuration utilising an Infra-Red
beam. Optical beam smoke detectors are particularly
appropriate for protecting buildings with large open
spaces such as warehouses, atriums etc.
The MI-LPB2 detector is a combined transmitter/receiver
unit that can be directly connected to an analogue loop
circuit. The Infra-Red transmitter generates a beam of light
towards a high efficiency reflector. The reflector returns
the beam to the receiver where an analysis of the received
signal is made. The change in the strength of the received
signal is used to determine the alarm condition.
Alignment of the detector is simplified with the aid of
the detector’s "gunsight" targeting device. Alignment of
the detector with the reflector can then be “fine tuned”
with the aid of a numerical signal strength indicator.
• Combined transmitter and receiver unit
• Range 10-100 metres
• 4 x fixed sensitivity/threshold levels
• 2 x automatic variable sensitivity modes
• Operates in the Infra-Red light spectrum
• Numerical indicators to aid beam alignment
• Standby, fault and alarm LED indicators visible from the front and bottom
• ±10° horizontal and vertical beam alignment
• Automatic drift compensation
• Loop powered
• Complies to EN54-12
• Extended Warranty
electrical
Operating Voltage Range: 15 to 32Vdc (24Vdc nominal)
Typical Standby Current: 2mA @ 24Vdc
(No communications, LED off)
Maximum Alarm Current (LED on:) 8.5mA
Maximum Alignment Current 20mA
mechanical
Weight: 1.77kg
Max Wire Gauge for Terminals: 2.5mm2
Colour: White trim, black box
Material: Bayblend FR110 trim, Lexan
lens cover, Noryl backbox
Reflector: 200 x 230mm (10 – 70m
range, supplied as
standard)