Operating Instructions Combics CAIXS2 169
FM Certificate
FM APPROVALS PROJECT NO: 3049923
Page 8 of 10
†; Any. The input power from the SIWXS… or ISX… is not critical to the CAISX2-…. as
the circuit is resistively limited at the input. A consideration only need to be taken for
the cable parameters and that will be defined by the SIWXS… or ISX….
DMS Front End Board
Uo = 11.8 V
Io = 147mA
Po = 1.49 W
Co = 770 nF
Lo = 300 μH
2 DESCRIPTION
The intrinsically safe indicator type CAIXS2-.… is used for data handling and indication
in a weighing system. Intrinsically safe analog weighing platforms or load cells can be
connected to the internal analog digital converter board, which can be replaced by a
RS232 /RS485 data output board for connection of intrinsically safe digital weighing
platforms or scales. Additional data transfer can be done by an intrinsically safe RS232,
RS485 or RS422 data output board with and without digital I/O signals.
Operation Temperature Ranges:
The ambient operating temperature range of the Super Pressure Transmitter is -10°C to
40°C.
3 EXAMINATIONS AND TESTS
3.1 US & Canadian Examination
Samples of the intrinsically safe indicator type CAIXS2-.… were submitted for
examination and testing. The intrinsically safe indicator type CAIXS2-.… samples were
considered to be representative of the product line and were examined, tested, and
compared to the manufacturer's drawings. All data is on file at FM Approvals along with
other documents and correspondence applicable to this program.
All testing and analysis considered appropriate was conducted and verified to be in
compliance with the Standards defined in Sections 1.3.1 and 1.3.2.
3.2 ATEX Examination
The examination and tests were conducted under FM Approvals Project 3049922,
IECEx Test Report Number US/FME/ExTR13.0005/00. The test and constructional
requirements of EN 60079-0:2012 and EN 60079-11:2012 are based on those of
IEC 60079-0:2011 and IEC 60079-11:2011. The European versions of these standards
differ from the equivalent IEC versions in a number of ways. Where the differences are
published in the IECEx Bulletin, these were reviewed as part of this examination. Where
the standards are not addressed in the IECEx bulletin, a comparison between the IEC
and EN standards was conducted. The product was also found to comply with the
published National European Deviations.
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