Yokogawa RAMC - Manual (Page 95)

<10. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
10-3
IM 01R01B02-00E-E 10th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
Rota Yokogawa
D-79664 Wehr
WT-MAG Mat. No. 16-8040
Serial No, xxxxxxxx
Ex ia IIC T6 Gb
PTB 12ATEX2003
Ui=30V Ii=101mA Pi=1.4W
Li=0.15mH Ci=4.16nF
II 2G
10.2.2 Installation
Intrinsic safe power supply for the electronic transmitter :
The power supply for the electronic transmitter is an associated apparatus that may not be installed in the hazard-
ous area, and it may not exceed the safety relevant maximum values for voltage, current and power of the elec-
tronic transmitter as specified above.
For example option /UT can be used.
Intrinsic safe power supply for the limit switches :
The power supply (transmitter relay) for the limit switches is an associated apparatus that may not be installed in
the hazardous area, and it may not exceed the safety relevant maximum values for voltage, current and power of
the connected limit switch as specified above.
For example the type KFA6-SR2-Ex... (option (W2_) according certificate PTB 00 ATEX 2081 (230V AC supply)
or the type KFD2-SR2-Ex... (option (W4_) according certificate PTB 00 ATEX 2080 (24V DC supply) can be used.
Fig. 10.1 Ex-Version according ATEX (Option /KS1) with electronic transmitter, power supply and
limit switches with transmitter relay
15
4
6
3
1
14
12
10
11
8
7
9
12
11
10
9
I -
I +
L/+ N/-
O -
O+
Output 4-20mA
O+H Output HART
U
F
G
RAMC
A
Supply 230V AC
KFA6-SR2-Ex2.W
Option: /W2B two channels: KFA6-SR2-Ex2.W
Transmitter relay
Limit MIN
Limit MAX
Option / Kn
Rotameter
4-20mA
Max
Min
Limit switch
EN 60947-5-6 (Namur)
One channel connection like limit MAX
I = 101m A
P = 1.4W
C = 4.16nF
U = 30V
L = 0.15mH
Transmitter WT-MAG
Ex ia IIC T6 Gb
PTB 12 ATEX 2003
Tamax = 70°C
Tamax = Temperature in indicator
C = 150nF
Ex ia IIC T6
L = 0.15uH
SC 3.5-NO
P = 64mW
I = 25mA
U = 16V
Temperature
T4 Tamax = 89°C
T3 Tamax = 89°C
T2 Tamax = 89°C
T1 Tamax = 89°C
Class
T5 Tamax = 61°C
T6 Tamax = 49°C
PTB 99 ATEX 2219 X
PTB 00 ATEX 2018
Transmitter power supply
Option: /UT
Option: /W2A one channel: KF A6-SR2-Ex1.W
C = 2320nF
I = 19.1mA
P = 51mW
U = 10.6V
L = 97mH
PTB 00ATEX 2081
[Ex ia]) IIC
KFA6-SR2-Ex2.W
RN221N-B1
RN221N-B1
Tamax = 50°C
C = 86nF
L = 5.2mH
U = 27.3V
P = 0.597W
[Ex ia] IIC
I = 87.6mA
o
o
o
o
o
e.g. Standard Type 2
-
+
-
+
-
+
~ ~
+
-
+
-
i
i
i
i
i
i
i
i
i
o
o
o
o
o
F4.EPS
i
Hazardous area Safe area
10.2.3 Marking
Name plates of electronic transmitter :