YOKOGAWA digitalYEWFLO Series User Manual

<10. EXPLOSION PROTECTED TYPE INSTRUMENT>
10-4
IM 01F06F00-01EN
(5) Installation Diagram of Intrinsically safe (and Note)
F1002.ai
DY
(Flowmeter)
Terminator
Terminator
Safety Barriar
Field Instrument
Field Instrument
Hazardous Location
Non Hazardous Location
DYA
(Converter)
DY-N
(Flowmeter)
Terminator
Terminator
Safety Barriar
Field Instrument
Field Instrument
Hazardous Location
Non Hazardous Location
A
B
T(*1)
A
B
T
C
DYC (Signal Cable)
[
Integral type
] [
Remote type
]
(*1): Wire for T termanal
With temperature sensor type: Installed
Without temperature sensor type: Not Installed
Note
•
In the rating 1, the output current of the barrier must be limited by a resistor ‘Ra’ such that Io=Uo/Ra.
•
In the rating 2, the output of the barrier must be the characteristics of the trapezoid or the rectangle and this transmitter can be
connected to Fieldbus equipment which are in according to the FISCO model.
•
The terminators may be built-in by a barrier.
•
More than one field instrument may be connected to the power supply line.
•
The terminator and the safety barrier shall be certified.
Electrical data
Ex ia II C Ex ic II C
Rating1 (Entity) Rating2 (FISCO) Rating (Entity)
Maximum Input Voltage Ui 24 Vdc 17.5 Vdc 32 Vdc
Maximum Input Current Ii 250 mA 500 mA –
Maximum Input Power Pi 1.2 W 5.5 W –
Maximum Internal Capacitance Ci 3.52 nF 3.52 nF 3.52 nF
Maximum Internal Inductance Li 0 mH 0 mH 0 mH

YOKOGAWA digitalYEWFLO Series Specifications

General

Brand	YOKOGAWA
Model	digitalYEWFLO Series
Category	Measuring Instruments
Language	English