100 mm

Ex Signaling devicesr =32 mmax. signalreceptionrangeSounder 105 dB (A)IS-A105NIP 66ProtectionsystemElectrical data+ 60 °C- 40 °COperatingtemperatureIS-A105NRated voltage 24 V DCThese sounders are used in workplaces where dangerous, explosiveatmospheres are to be expected• free selection of 49 different tones UKOOA/PFEER conformant• high sound pressure level of 105 dB (A), can be reduced by up to15 dB (A) via a potentiometer• up to 2 tones can be selected externally in order to signal differentalarms• works on DC voltages between 10 and 28 Volt DC, rated voltage24 V DC• an input protector prevents damage due to incorrect connectionwithout a Zener barrier or galvanic isolation• can also be used outdoors thanks to housing made ofself-extinguishing ABS and IP 66 protection system• categories 1G, 2G and 3G (Zones 0, 1 and 2)See pages 242 and 243 for suitable zener barriersOperating range 10 V DC – 28 V DCNominal current consumption 25 mA (typical for connection to 24 V DC via 28 V / 300 Ω zener barrier)Power must be connected via a zener barrier (max. 28 V DC, 93 mA DC, 0.66 W) or a galvanic isolator, specifi ed by the system certifi cate (see page 243)Mechanical dataIS-A105NType of protection EN 50020 ‘ia’ inherently safeExplosion protection II 1G EEx ia IIC T4 - 40 °C ... + 60 °C TaCategory (area of use) 1G (Zone 0) / 2G (Zone 1) / 3G (Zone 2)Certificate of conformity SIRA 04 ATEX 2301XTesting body SIRASound pressurelevelTonesmicrophone distance1 mup to 105 dB (A) ± 3 dB (A)can be reduced by up to 15 dB (A) via an internal potentiometer49 different tones can be set via DIP switch, of which 2 tones are externally selectableStorage temperature - 40 °C … + 70 °CRelative humidity 90 % @ + 50 °CDuty cycle 100 %Material ABS self-extinguishing, similar to UL 94 VOColour similar RAL 3000 (fl ame red), optionally in grey RAL 7038 or white RAL 9010Connecting terminals 0.5 – 2.5 mm 2Cable entry20 mmWeight 0.75 kgDimensions130132130Ø 7.3143M20226www.pfannenberg.com