The MI-LZR high sensitivity LASER based intelligent
smoke sensor provides an extremely high
sensitivity to fire conditions, by detecting the
earliest particles of combustion. This is achieved
by combining a patented optical chamber, the
latest in LASER diode and precision optical
technology. This combination enhances the
sensitivity of the device. Sophisticated processing
circuitry and smoothing filters help eliminate the
effects of transient environmental noise, which
can be the cause of unwanted alarms.
The result is a very sensitive and stable sensor able
to achieve sensitivities of 0.07 % to 6.56% per
metre obscuration - up to 100 times more sensitive
than a standard photoelectric smoke sensor.
Historically, photoelectric smoke sensors have
shown a quick response to slow smouldering fires,
whilst ionisation smoke sensors have responded
quicker to fast flaming fires. The MI-LZR provides
a good response to both types of fire by
improving the signal to noise ratio. The use of a
LASER enables detection of small particles (usually
associated with fast flaming fires), that are not as
easily detected by a standard photoelectric smoke
sensor.
• Extremely high sensitivity LASER based smoke sensor
• Superior early warning performance
• Effective response to both fast flaming and slow smouldering fires
• Stable communication with high noise immunity
• 9 sensitivity levels (0.07 - 6.56%/m)
• Twin LEDs for 360° visibility
• Built-in test
• Third party tested to EN54-7:2000
mechanical
Dimensions:
Colour: Pantone warm grey 1C
Material: Bayblend FR110
Terminal wire guage: 2.5mm2 max.
Operating temperature: -10°C to +55°C
Relative humidity: 10% to 93%(noncondensing)
electrical
Voltage: +15 to +32Vdc
Standby current:
No communication: 230μA @ 24Vdc maximum
One communication
every 5 seconds,
LED blink: 330μA @ 24Vdc maximum
Alarm current: 6.5mA @ 24Vdc maximum
Sensitivity modes:
1 0.07 %/m
2 0.10 %/m
3 0.16 %/m
4 0.33 %/m
5 0.66 %/m
6 1.65 %/m
7 3.24 %/m*
8 4.85 %/m*
9 6.41 %/m*