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"KMB4" BOX WITH PASSIVE SAFETY ZENER BARRIERS, FOR ATEX ENVIRONMENTS


  "KMB4" BOX WITH PASSIVE SAFETY ZENER BARRIERS, FOR ATEX ENVIRONMENTS
 

KMB4: kit of zener barriers for hazardous areas.


KMB4: dimensions in mm.


3 zener barriers for load cell supply, signal, and sense.
Suitable for mounting on a DIN bar in a safe area, or in a hazardous-proof case (Exd) in an ATEX area.

Kit of three intrinsic protection Zener barriers, for connection of devices in ATEX area with devices in safe area, housed in an ABS box.
Marking of single barrier: ATEX II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC.
Marking of the whole box with three Zener barriers:
ATEX II 3(1)G Ex nA [ia Ga] IIC T4 Gc (-20°C ≤ Ta ≤ +40°C) for gas
ATEX II 3(1)D Ex tb [ia Da] IIIC T130°C Dc IP65 (-20°C ≤ Ta ≤ +40°C) for dust.

SINGLE CHANNEL FEATURES

  • Barrier for signal and sense: Um=250V
    Fuse: 50mA
    Uo: 17,4V
    Io: 25mA
    Po: 0,11W
    Co: 0,346µF
    Lo: 56,88mH
    Rmin: 705,6Ohm

  • Barrier for supply: Um=250V
    Fuse: 100mA
    Uo: 24V
    Io: 164mA
    Po: 0,98W
    Co: 0,125µF
    Lo: 1,32mH
    Rmin: 147Ohm

  • NOTES:
    - Connection with up to 4 load cells of 350 ohm each.
    - The combination of two or more Zener barriers (1) GD [Ex ia] implies that the Atex marking of the barriers assembly must be update to (2) GD [Ex ib], as required by the EN 60079-14 standard.


    WARNING
    The KMB4 kit can be placed in ATEX zone according to its ATEX marking or in alternative in a safe area.

    The electric coordination, executed for realizing the DCATEXMB4 certificate, involves the use of the LCCB/EXCB6 cable, maximum length of 200m (greater lengths upon price estimate).

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Installation examples
Dini Argeo non Atex indicator and KMB4 box in safe area, connected to the Dini Argeo ATEX platform in hazardous area. The system is provided with declaration of ATEX conformity (code DCATEXMB4).



DFWATEX3GD Dini Argeo indicator and KMB4 box in ATEX 2 & 22 areas, connected to the Dini Argeo ATEX platform in ATEX 1 & 21 areas. The system is provided with declaration of ATEX conformity (code DCATEXMB4).

Available versions:
 CodeDescription
KMB4 Kit of 3 ATEX zener barriers for load cells, in an ABS box. For up to 4 load cells of 350 ohm, for intrinsic protection weighing systems in an hazardous area. Marking of the whole box with three Zener barriers: ATEX II 3(1)G Ex nA [ia Ga] IIC T4 Gc (-20°C ≤ Ta ≤ +40°C) for gas, ATEX II 3(1)D Ex tb [ia Da] IIIC T130°C Dc IP65 (-20°C ≤ Ta ≤ +40°C) for dusts.
ZBPW Intrinsic protection Zener barrier for load cell supply, for mounting on DIN bar in a safe area, or in a hazardous-proof case. Marking: ATEX II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC.
ZBSG Intrinsic protection Zener barrier for load cell signal, for mounting on DIN bar in a safe area, or in a hazardous-proof case. Marking: ATEX II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC.
ZBSN Intrinsic protection Zener barrier for load cell sense, for mounting on DIN bar in a safe area, or in a hazardous-proof case. Marking: ATEX II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC.
Options only available at time of order:
 CodeDescription
DCATEXMB4 ATEX declaration of the whole for systems with zener barriers. Ex II 2GD IIC T6 T125°C X system, with relative label of whole system, for weight indicator connected to Dini Argeo zener barriers, connected to a mechanical structure with ATEX load cells (each cell must be certified with CCATEX option).
LCCB Shielded 6x0,25 mm² cable (suitable for Ex zones). €/m

All the specifications and images can be subject to variations and upgrades without prior notice.
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