MHG 531
MHG 531
Flame Detector
The MHG 531 Flame Detector is intended for the automatic fire alarm signalling as a flame detector in the Electric Fire Detection and Alarm System LITES.

The MHG 531 Flame Detector is intended for the automatic fire alarm signalling as a flame detector in the Electric Fire Detection and Alarm System LITES.

It is to use at locations of anticipated flame occurence. It works on the principle of detection of scattered infrared radiation of a flaming fire.

The MHG 531 Detector is meant for cooperation with the Control and Indicating Equipments (C.I.E.) MHU 106 (by the help of the JSM-5 loop group), MHU 108 and MHU 113. Through the use of the Adressing Unit MHY 409 it is also possible to connect the detector to the addressable C.I.E. MHU 109 and to the analogue C.I.E.‘s MHU 110 and MHU 111. To the line of a fire loop the detector is to connect by means of the MHY 734 Base. As parallel signalling the Signal Indicators MHS 409, MHS 408 (MHS 407, MHS 405) can be used.

For its use in the Electric Fire Detection and Alarm System the detector is liable to the compliance examination according to law No. 22/1997 Sb., in wording law No. 71/2000 Sb. and the relevant orders of the government. The detector is not intended for environs with explosion danger. It conforms to the European Norm EN 54-10.

 

Technical specifications
Supply voltage (16 ÷ 24) Vss
Rated supply voltage 21,5 Vss
Steady state current max. 250 µA
Current at fire alarm max. 100 mA restricted by the C.I.E.
Voltage at fire alarm 6 ÷ 8 V při 10 mA (MHG 531.076)
Optical signalling in the detector a couple of red LED observation angle 360°
pozorovací úhel 360°
Parallel signalling type LITES
Flame sensitivity according to the methodics EN 54-10 2/17 m class
Vision angle 90° (55° according to EN 54-10)
Detector sensitivity wavelenght 4,3 µm
Flaming sensitivity frequence 2 ÷ 10 Hz
Testing procedure by the Test Bar MHY 533
Protection according to ČSN EN 60529 IP 43
Radioscreening degree according to ČSN EN 55 022 zařízení třídy B
Dimensions ø98 × 54 mm
Weight cca 200 g
Safety requirements Product intended for a plant with safety arrangement in terms of ČSN EN 60950

 

 

Working conditions
The MHG 531 Flame Detector is intended for the interior of objects without occurrence of agressive 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 to +70 °C
Relative humidity max. 95% at +40°C (max. 100 hours per year)