Annunciators "Orbita MK M-Z" are designed to give disturbing sound signals in fire and security alarm systems, to attract the attention of personnel in emergency situations in production. Annunciators can be used with any fire and burglar alarm control and monitoring devices.Type and level of protection 1 Ex db IIC T 6 Gb / Ex tb IIIC T 85 ° C Db, PB Ex db I Mb/ 1 Ex db IIC T6 Gb/Ex tb IIIC T85 °C Db according to GOST R IEC 60079-0-2011 .Annunciators can be used in hazardous areas and rooms of classes 1 and 2 in accordance with GOST IEC 60079-10-1-2011 and GOST IEC 60079-14-2011.
The sirens have two stages of notification and different modes of operation independently for each stage.Switching the notification stage is carried out in one of two ways:
The notification mode is set using a group of microswitches.
The sirens are produced with supply voltage:
Distinctive features:
The posts are equipped with explosion-proof cable glands of the KV, KV series TU 27.33.13-138-81888935-2019.Connecting thread of cable glands M20x1.5.Cable glands allow you to enter and exit a round cable of various diameters
Table 1
| Explosion protection marking | 1 Ex db IIC T6 Gb/Ex tb IIIC T85 °C Db, | |||||||||
| Sheath protection degree | IP67 | |||||||||
| Climatic performance | UHL1 | |||||||||
| Operating temperature range | -60С<Ta<+70С | |||||||||
Supply voltage: Orbit MK M-Z Orbita MK M-Z 220 | 10.8V - 27Vdc ~220V +10% -15% ac 50Hz | |||||||||
Consumption current, no more: Orbit MK M Z Orbita MK M Z220 | 0.4Adc 0.1Aac | |||||||||
| Sound pressure level | 117±5 dB | |||||||||
| Number of alarm stages | 2 | |||||||||
| The number of beeps of each stage (seeSingle-stage or two-stage modes are available. The second stage is switched on automatically after a fixed time, or by means of an external control signal.The type of sound notification signal is selected by the user independently for each stage using dip-switches (Table 2). Designation system when ordering:
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