MHG 664
Linear Smoke Detector
The MHG 664 interactive and autonomous linear smoke detector with servomotors for optics adjustment and laser pointer
The MHG 664 interactive and autonomous linear smoke detector with servomotors for optics adjustment and laser pointer is intended for automatic fire alarm signalling as smoke detector in analogue addressable and conventional Fire Detection and Fire Alarm System LITES.
It is intended to indicate a rising fire on the principle of reducing the infrared ray trough smoke particles. Linear smoke detector is placed at locations of anticipated smoke occurrence and concentration.
Interactive Linear smoke detector MHG 664 in a reflex version is intended for up to 100m. It consists of transmitter and receiver on a printed circuit board, which is along with the opticalsystem placed in a plastic box with an aperture for the infrared ray. The detector is equipped with servomotors and laser pointer for optics adjustment.
To each detector is connected the Indicating preparation MHY 740. For adjustment of the detector serve the preparations MHY 536, MHY 537 or MHY 538, which also serve as a controlunit for autonomous use of the detector.
The detector operates in regimes:
- interactive using analogue communication with C.I.E. MHU 110, MHU 111, MHU 115, MHU 116,MHU 117,
- interactive with contact outputs Alarm and Fault for connection to conventional C.I.E.,
- interactive with contact outputs Alarm and Fault for autonomous regime or for connection to C.I.E.of other manufacturers.
Technical parameters | ||
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Power supply | addressable regime | addressable C.I.E. LITES |
autonomous regime | (10 ÷ 24) Vss | |
Standby current | max. 300 μA (according to range) | |
Fire alarm current | addressable regime | max. 35 mA (according to connected signalling) |
autonomous regime | 40 mA at 24 VDC, 100 mA at 10 VDC | |
Optical signalling | red LED Alarm in indicating preparation, yellow LED Fault in indicating preparation | |
Sensitivity | 20, 40, 60% absorption of ray by smoke | |
Reaction time | fast (~ 3s), slow (~ 10s) | |
Output relay | max. switched voltage | 176Vdc/125Vac |
max. switched current | 1A | |
max. switched power | 30W/60VA | |
Range | (10 ÷ 100) m | |
Protected area | max. (100 x 14) m | |
Testing procedure | by means of a reducing shutter | |
Protection according to ČSN EN 55022 | IP54 | |
Radio screening degree according to ČSN 55022 | B-class equipment | |
Setting of an address | by addressing preparation MHY 535, MHY 536 or adjustment preparation MHY 537, MHY 538 | |
Cross-section of connectable wires | (0,2 ÷ 1,5) mm2 | |
Weight | 600g | |
Dimensions | MHG 664 | 135 × 135 × 75 mm |
Reflex glass | 100 x 100 mm for up to 50m 400 x 400 mm for up to 100m |
Working conditions | |
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The MHG 664 Linear smoke detector is intended for the interior of objects without occurrence of aggressive substances, and for places where its protection and climatic immunity conform, and where sudden temperature changes leading to dew and ice accretion don`t occur. | |
Working temperature range | -25°C ÷ +70°C |
Relative humidity | max. 95% at +40°C |
Atmospheric pressure | 66 ÷ 106 kPa |