Sprogių aplinkų gaisro konvencinis temperatūrinis daviklis (detektorius) Lites MHG 385.059

The MHG 385 Heat Detector is a self-acting detector of the Electric Fire Detection and Alarm System LITES intended for the automatic fire alarm signalling (rising fire) as a detector responding to an increased temperature rising before or during a fire.

The MHG 385 Detector is manufactured in so-called voltage characteristic. It is especially intended for environs with explosion hazard, namely in cooperation with the Control and Indicating Equipments (C.I.E.) MHU 106, MHU 108, MHU 113, MHU 109, MHU 110 and MHU 111. With the MHU 106 C.I.E. the MHG 385 Detector may be used in connection with the JSM-5 loop. The connection to the addressable MHU 109 C.I.E., or to the analog MHU 110 (MHU 111) C.I.E. is to make by the help of the MHY 409 Addressing Unit. The connection to a fire loop is to carry out by means of the MHY 703 Mounting Base, eventually by means of the MHY 713 Mounting Base in environments without explosion hazard. As parallel signalling the signal lamps MHS 409, MHS 408 (MHS 405, MHS 407) can be used.

The detector may work:

in environments with combustible gas or vapours explosion hazard according to ČSN 33 2320
in environments with combustible dust explosion hazard according to ČSN 33 2330
in environments with explosion hazard of explosives according to ČSN 33 2340

The detectors are produced in these versions:

MHG 385.058 – conforms to the A2 class of the ČSN EN 54-5 standard
MHG 385.059 - conforms to the B class of the ČSN EN 54-5 standard

For its use in the Electric Fire Detection and Alarm System the detector is liable to the conformity examination according to law No. 22/1997 Sb., in wording law No. 71/2000 Sb. and the relevant orders of the government. For the use in explosion hazard environs the detector is liable to the homologation of the FTZÚ Ostrava - Radvanice A0 210.

Technical specifications

• Supply voltage (16 ÷ 26) Vss
• Rated voltage 21,5 Vss
• Maximum admissible voltage 30 Vss
• Steady state current
• MHG 385.058 max. 35 µA
• MHG 385.059 max. 50 µA
• Current at alarm max. 100 mA limited by the C.I.E.
• Voltage at alarm (6 ÷ 8) V při 10 mA
• Optical signalling a red LED
• Parallel signalling type LITES

Static element response temperature

• MHG 385.058 (54 ÷ 70) °C
• MHG 385.059 (69 ÷ 85) °C

Theoretic normal surrounding temperature

• MHG 385.058 25 °C
• MHG 385.059 40 °C

Maximum normal surrounding temperature

• MHG 385.058 50 °C
• MHG 385.059 65 °C

Construction according to ČSN EN 50014 EExe II T6

• Testing by the MHY 533 Testing Rod
• Protection according to ČSN EN 60529 IP 54
• Radioscreening degree according to ČSN EN 55022 B-class equipment
• Dimensions ø147 × 37 mm
• Weight cca 500 g

Working conditions

• Working temperature range -25 °C to +70 °C
• Relative humidity max. 95% at +40°C (3 × 21 days in a year)
• Atmospheric pressure (66 ÷ 106) kPa