The MI-PTSE multi sensor combines optical smoke
detection, heat detection and microprocessor
control with analogue addressable communications.
For smoke detection the MI-PTSE incorporates an
improved sensing chamber design, linked to
sophisticated processing circuitry with smoothing
filters. This helps to eliminate the transient
environmental noise conditions which can be the
cause of false alarms. The sensor's performance is
further enhanced by the integration of special
algorithms which automatically compensate for
contamination of the sensing chamber. This
enables the sensor to provide a consistent level of
sensitivity and increased immunity to unwanted
alarms.
In combined modes of operation both the inputs
from the optical and thermal sensors are processed
using special algorithms before an alarm decision is
made. If the presence of smoke is detected above a
threshold value for a period of time, or if the heat
sensor detects temperatures above 58°C then an
alarm condition will be generated. In "heat only"
mode only temperatures above 58°C will generate
an alarm condition.
• Optical and thermal sensors
• Microprocessor controlled with internal algorithms
• Enhanced signal processing for improved stability
• High immunity to unwanted alarms
• 2 autolearn sensitivity settings
• 3 fixed sensitivity photo thermal settings
• Thermal only detection mode
• Twin LEDs for 360° visibility
• Built-in test
• Third party certified to CEA 4021, EN54-7:2000 and EN54-5:2000
mechanical
Dimensions:
Weight: 115g
Colour: Pantone warm grey 1C
Material: Bayblend FR110
Terminal wire guage: 2.5mm2 max.
Operating temperature: -20°C to +60°C
Relative humidity: 10% to 93%(noncondensing)
electrical
Voltage: +15 to +32Vdc
Standby current:
No communication: 250μA @ 24Vdc maximum
One communication
every 5 seconds,
LED blink: 300μA @ 24Vdc maximum
Alarm current: 7mA @ 24Vdc maximum
Sensitivity modes
1 High (1%/ft)
2 Medium to high - auto adjusting (1-2%/ft)
3 Medium (2%/ft)
4 Low to Medium - auto adjusting (2-3%/ft)
5 Low (3.5%/ft)
6 Thermal only - Class A1R (58°C)