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<14. EXPLOSION PROTECTED TYPE INSTRUMENT>
14-3
IM 01F06A00-01EN
(3) Operation
WARNING
Wait 3 min. after power is turned off, before
opening the covers.
Take care not to generate mechanical
spark when access to the instrument and
peripheral devices in hazardous locations.
(4) Maintenance and Repair
WARNING
The instrument modi cation or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void the
certi cation.
(5) Installation Diagram of Intrinsically safe
(and Note)
DY (Flowmeter)
SUPPLY
PULSE
Safety barriers
[Integral type]
Electrical data:
Signal/Supply Circuit (Terminals SUPPLY + and –):
Ui = 30 V, Ii = 300 mA, Pi = 0.9 W (linear source),
Ci = 14 nF, Li = 0 mH
Pulse Circuit (Terminals PULSE + and –):
Ui = 30 V, Ii = 300 mA*, Pi = 0.9 W (linear source),
Ci = 14 nF, Li = 0 mH
*: Refer to “Contact rating” for the maximum current value of
Pulse Circuit
Note:
- It shall be assured that the voltage difference between the
output circuits of the associated apparatus (safety barriers)
is not more than 30V.
- Cables for the connection for Signal/Supply Circuit and
Pulse Circuit shall be of Type A or B in accordance with EN
60079-14, otherwise the sum of Io of the associated
apparatus (safety barriers) shall be not more than 300 mA.
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
+
-
+
[Remote type without built-in Temperature sensor]
PULSE
A
B
T
C
A
B
T
Safety barriers
DY-N (Detector)
DYC: Signal cable
Non Hazardous
Location
Non Hazardous
Location
F1402.ai
Hazardous
Location
Hazardous
Location
DYA (Converter)
SUPPLY
+
-
+
-
+
-
+
-
+
-
+
[Remote type with built-in Temperature sensor]
PULSE
A
B
T
C
A
B
T
Safety barriers
DY-N (Detector)
DYC: Signal cable
Non Hazardous
Location
Hazardous
Location
DYA (Converter)
SUPPLY
(6) Electrical Connection
The type of electrical connection is stamped near
the electrical connection port according to the
following codes.
Screw size
ISO M20 X 1.5 female
ANSI 1/2-14NPT female
!
!
M
N
Marking
F1403.ai
154


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