User Manual

IM 12J05C01-01E
General Specifications 2-6
2-4. Control Drawing of DO202S mA HART® Specification (IECEx)
・ Electrical data of the DO202S.
- Supply and output circuit (terminals + 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
= 35 PH.
- Sensor input circuit (terminals 11 through 18):
Maximum output voltage U
o
= 14.4 V. Maximum output current I
o
= 22 mA.
Maximum allowed external capacitance C
o
= 643 nF.(for DO202S-A)
C
o
= 3.5 μF(for DO202S-N)
Maximum allowed external inductance L
o
= 70 mH. (for DO202S-A)
L
o
= 160 mH. (for DO202S-N)
・ 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 IECEx certified intrinsically safe type
in case it is used on the intrinsically safe circuit in the hazardous area or of
a IECEx certified non-incendive type in case it is used in the non-incendive circuit
in the hazardous area.
DO202S
Dissolved Oxygen -transmitter)
Safe area
Uo = 31.5 Volt DC
Io = 100 mA
Po = 1.2 Watt
Ex ia or ib Certified Repeater
Power Supply
(HART Compatible)
Output
Supply
SENSOR(S)
terminals 11-18
+
_
G
SENSOR(S)
terminals 11-18
Zone 0 or 1
Hazardous area Safe area
+
_
G
Functional
earth
Functional
earth
Intrinsically safe design
IECEx standard Ex ia IIC: T4 for ambient temp. < 55°C
T6 for ambient temp. < 40°C
Certificate nr. IECEx KEM 06.0055X
DO202S
+
_
Load
Resistance
Ex ia or ib
Certified safety barrier or power
with Rint=300
:
Io = 100 mA
Uo = 31.5 Volt DC
Zone 0 or 1
Hazardous area
Functional
earth
+
_
24 volts DC Nominal
Supply Voltage.
Intrinsically safe design
IECEx standard Ex ia IIC: T4 for ambient temp. < 55°C
T6 for ambient temp.< 40°C
Certificate nr. IECEx KEM 06.0055X
(HART compatible)
(Dissolved Oxygen -transmitter)