Yokogawa RAMC - Manual (Page 96)

<10. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
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IM 01R01B02-00E-E 10th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
10.3 Nonincendive components for Category 3 (ATEX) (/KN1)
10.3.1 Technical data
RAMC with option /KN1 have an electronic transmitter and / or limit switches with protection type "n" (non incen-
dive) for category 3G or dust proof for category 3D.
Identification:
II 3 G
II 3 D
Data of electronic transmitter :
The electronic transmitter is an apparatus with the type of protection “nL”.
It can be mounted or installed in the hazardous areas of zone 2 (category 3).
The classification in brackets is given according to the new EU regulation 94/9/EG (ATEX).
This version is identically constructed as intrinsically safe (ia) version.
Type of protection : Ex nL IIC T6 X
n = Nonincendive
L = energy limited apparatus
Ambient temperature : -25 °C < T
a
< 70 °C
Safety relevant maximum values :
Maximum voltage : U
i
= 30 V
Maximum current (IIC) : I
i
= 152 mA
Maximum current (IIB) : I
i
= 379 mA
Maximum power : P
i
= 1.4 W
Internal inductance : L
i
= 0.15 mH
Internal capacity : C
i
= 4.16 nF
Maximum surface temperature for dust application : 80°C
Data of limit switches :
The limit switches are apparatus with the type of protection “nL”.
They can be mounted or installed in the hazardous areas of zone 2 (category 3).
The classification in brackets is given according to the new EU regulation 94/9/EG (ATEX ).
This versions are identically constructed as the corresponding intrinsically safe (ia) versions.
Type of protection : EEx nL IIC T6 X
n = Nonincendive
L = energy limited apparatus
Ambient temperature : -25 °C < T
a
< 100 °C for SC3,5-N0 (Standard)
-40 °C < T
a
< 100 °C for SJ3,5-SN / S1N (Fail safe)
Maximum surface temperature for dust application : 112°C
Maximum safety parameters see table 10.1.
See also specification sheet from Pepperl & Fuchs for SC3,5-N0 (Standard) and SJ3,5-SN / S1N (Fail safe).