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US Certificate Of Conformity No: FM17US0327X
11.
The marking of the equipment shall include:
IS CL I, II, III, DIV 1, GP A,B,C,D,E,F,G T4
CL I, Zone 1, AEx ia IIC T4
Zone 21, AEx ia IIIC T80⁰C
12.
Description of Equipment:
General - The intrinsically safe indicator type CAIXS2-.... Is used for date 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 to 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.
Construction - The housing of the display unit consists of stainless steel with a membrane switch glued to the
front panel. The weighing modules housing consists of painted aluminium and/or stainless steel.
Ratings - The ambient temperature range of the CAIXS2-.... Intrinsically Safe Indicator, which is also listed on
controlled drawing 66015-751-07, is -10°C to +40°C. The maximum surface temperature for dusts of the
CAIX2-.... is 80°C.
CAIXS2-ab Intrinsically Safe Indicator
a = U or V or blank
b = blank or up to three numbers (not relevant to safety)
Electrical Parameters
Connections to the DC Supply Adapter Cable
Circuit
Ui
V_1
12.6 V
V_2
12.6 V
V_3
8.6 V
V_4
12.6 V
Connections to the Data Adapter Board (COM1)
Circuit
Ui
RS232
12.6 V*/25.2 V**
RS422
8.6 V
RS485
see below
Digital I/O
8.6 V
*: versus ground; **: between the lines; ***: resistively limited
For the RS485 communication
Ui
±12.6 V
Ii
135 mA***
Rmin
95.4 Ω
RS485 (Rmin = Ui / Ii is the minimum output resistance of the combined circuits of the associated
apparatus connected to the CAIXS2-....)
***: resistively limited
THIS CERTIFICATE MAY ONLY BE REPRODUCED IN ITS ENTIRETY AND WITHOUT CHANGE
FM Approvals LLC. 1151 Boston-Providence Turnpike, Norwood, MA 02062 USA
T: +1 (1) 781 762 4300 F: +1 (1) 781 762 9375 E-mail:
F 347 (Mar 16)
SCHEDULE
Ii
Pi
Ci
133 mA
1.46 W
188 nF
133 mA
1.46 W
3 nF
187 mA
1.51 W
391 nF
150 mA
1.68 W
223 nF
Ii
Pi
Ci
328 mA***
any
2.2 nF*/0.5nF**
210 mA
0.5 W
0.5 μF
see below
any
260nF
any
any
0 μF
12 V
7.2 V
164 mA***
3.3A***
73.2 Ω
2.2 Ω
information@fmapprovals.com www.fmapprovals.com
Li
0.0 mH
0.0 mH
0.0 mH
0.1 mH
Li
0 mH
0 mH
0 mH
0 mH
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Instrucciones de manejo Combics CAIXS2
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