YOKOGAWA SC202G(S), User Manual

Page: 11 / 72

Specifications 2-3
IM 12D7B3-E-H
Safe area
Output
Supply
SENSOR
terminal 11-16
+
_
G
Hazardous area Safe area
+
_
G
Protective
earth
Protective
earth
+
_
Load
Resistance
U
o
= 31.5 Volts DC
I
o
= 100 mA
Hazardous area
Protective
earth
+
_
24 volts DC Nominal
Supply Voltage.
SENSOR
terminal 11-16
EEX ib
Certified safety barrier or power supply
with Rint= 300
Ω
(HART compatible)
Intrinsically safe design
II 2 (1) G EEX ib [ia] IIC: T4 for ambient temperature < 55 ºC
T6 for ambient temperature < 40 ºC
Certificate nr. KEMA 00 ATEX 1069 X
EXA SC202S analyzer
U
o
= 31.5 Volts DC
I
o
= 100 mA
P
o
= 1.2 Watt
EEX ib Certified Repeater
Power supply
(HART compatible)
Intrinsically safe design
II 2 (1) G EEX ib [ia] IIC: T4 for ambient temperature < 55 ºC
T6 for ambient temperature < 40 ºC
Certificate nr. KEMA 00 ATEX 1069 X
EXA SC202S analyzer
Zone 0 or 1
Zone 1
Zone 0 or 1
Zone 1
Figure 1
Figure 2
• Sensor(s) are of a passive type to be regarded as ‘simple apparatus’, devices which comply with clause 1.3 of the EN 50014.
• Electrical data of the EXASC202S.
- Supply and output circuit (ter and -):
Maximum input voltage U
i
= 31.5 V.
Maximum input current I
i
= 100 mA.
Maximum input power P
i
= 1.2 W
Effective internal capacitance C
i
= 22 nF.
Effective internal inductance L
i
= 22 µH.
- Sensor input circuit (terminals 11 through 16):
Maximum output voltage U
o
= 14.4 V.
Maximum output current I
o
= 12.8 mA.
Maximum allowed external capacitance C
0
= 103 nF.
Maximum allowed external inductance L
o
= 200 mH.
• Barriers and power supply specification must not exceed the maximum values as shown in the diagram above. These safety
descriptions cover most of the commonly used industry standard barriers, isolators and power supplies.
• The Hand Held Communicator must be of a ATEX certified intrinsically safe type in case it is used on the intrinsically safe circuit in
the hazardous area or of a ATEX certified non-incendive type in case it is used in the non-incendive circuit in the hazardous area.
ATEX intrinsic safe and non-incendive diagrams for SC202S-A
2-3. Connection diagrams for power supply