Duomo SGF 104 Руководство по установке и эксплуатации - Страница 2
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Technical Specification
Power supply ....................................................................................................................... 12÷24 VDC ± 10%
Power demand ...................................................................................... 110 mA in alarm Max @ 13,8 VDC
Relay switching alarm ......................................................................................................... 1 A 30VDC SELV
Selection of positive safety........................................................................................ Selectable by switch
Type of gas detected: Oxygen
Integrated sensor according to the type of gas ...........................................................Optical fluorescence
Operating range of the sensing element ..........................................................................0 - 25 % of O
Operating range selectable by switch ....................... 19.5 or 18.5% of O2 (depletion), 22.5, 23.5%
(Excess) Note
1
of O
2
Detector accuracy ...............................................................................................................................+/- 1% FS
Long term shift in clean air ...................................................................................................... < 3% of L.E.L.
Auto zero procedure .................................................................... Included in the software algorithms
Response Time ............................................................................................................................................... < 10"
Functioning humidity .............................................................................................. 0-90% not condensed
Functioning temperature ..................................................................................................... -30°C to +60°C
Control units usable directly.................................................................................................... BX308, BX316
Control units usable with adapter code yy.............. BX444-Mc, BX449F, GS100M, BX180, BX280,
Cable diameter for connecting probe - Note
Section shielded cable transmission distance up to 500 meters .............................x0,75mm2CSA
Installation ................................................................................................................... ceiling or wall mounted
Anti-tamper protection ..................................................................................................................... included
Enclosure.................................................................................................... ABS self-extinguishing VDE0471
External degree of protection........................ IP64
Overall dimensions ...........................................Diameter 90 mm, Depth 45mm
Electromagnetic compatibility Reference Norms ... EN 50270
Note
1
.
On SGF104 the trigger levels are dependant on the position of the DIP switch 2 selection.
They are respectively 19.5% (depletion) and 22,5% (excess) - DIP2 in OFF position - or 18.5%
(depletion) and 23,5% (excess) - DIP2 in ON position.
Note
2
.
Connection: The sensor cable must not be installed together with the power cables. If this is
unavoidable it is imperative otherwise, make sure to use a shielded cable.
Important:
The installation of the SGF104, commissioning, service and removal must be carried out by
authorized and/or specialized personnel. During installation the sensor enclosure must not be
pierced to do so will compromise the protective rating protection.
The installation of the detector does not exempt the user from compliance with all regulations
concerning the characteristics, installation and use of associated equipment. The ventilation
of the spaces and, for example, the removal of combustion products are described in the UNI
norms such as ART. 3 LAW 1083 / 71 and relevant legal provisions.
Do not allow the sensor to become wet.
The probe can be seriously damaged when immersed in water. Remember that the probe has
an IP64 protection degree.
Handle with care
Heavy knocks or falls during transportation or installation can damage the sensor.
Avoid abrupt temperature fluctuations.
Sudden temperature variations can cause condensation and the probe could work poorly. Tem-
perature compenstation is fitted to this sensor but rapid changes will still affect the functionality.
Cleaning Never clean the device with chemical products. Absolutely avoid using any cloth dip-
ped in thinners, alcohol and chemical detergents. The outer enclosure should only be cleaned
using a damp cloth.
Page 2
BX150, GS300M
2
............................................................ 1 mm for 100 mt
2