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IM 1F6A0-01E
9-5
9. EXPLOSION PRTECTED TYPE INSTRUMENT
9.2.5
Installation Diagram
Intrinsically Safe (and WARNING)
F090205_1.EPS
[Remote type]
DYA (converter)
SUPPLY
PULSE
A
B
T (*1)
C
A
B
T
DY (flowmeter)
SUPPLY
PULSE
Safety barriers
Safety barriers
[Integral type]
DY-N (flowmeter)
Hazardous Location
Class I, II, III, Division 1,
Groups A, B, C, D, E, F and G,
and Class I, Zone 0, Group IIC
Non Hazardous
Location
DYC: Signal cable
(*1) Wire for T terminal
With temperature sensor type : installed
Without temperature sensor type: not installed
Electrical parameters of vortex flowmeter (DY) and vortex flow
converter (DYA).
Vmax=30V Imax=165mA Pi=0.9W
Ci=12nF Li=0.15mH
Installation requirement between flowmeter, converter and
Safety Barrier
Vt or Voc
Vmax It or Isc
Imax Po
Pi
Ca
Ci+Ccable
La
Li+Lcable
Vt, Voc, It, Isc, Voc, Ca and La are parameters of barrier.
WARNING
1. In any safety barrier used output current must
be limited by a resistor ‘R’ such that Isc=Voc/R.
2. Any Single FM Approved Barrier of multiple
barriers FM Approved for this configuration
who’s parameters meet the above installation
requirements.
3. Input voltage of the safety barrier must be less
than 250Vrms/Vdc.
4. Installation should be in accordance with
National Electrical Code, ANSI /NFPA70.
5. Dust-tight conduit seal must be used when
installed in class II and III environments.
6. Do not alter drawing without authorization
from FM.
Nonincendive (and WARNING)
Hazardous Location
Non Hazardous
Location
Class I, II, Division 2,
Groups A, B, C, D, F and G,
Class III, Division 1, and
Class I, Zone 2, Group IIC
[Integral type]
[Remote type]
DY (flowmeter)
SUPPLY
PULSE
+
+
–
+
–
+
–
+
–
+
–
Power
Supply
Reciever
DY (converter)
DY-N (flowmeter)
SUPPLY
PULSE
+
+
–
+
–
+
–
+
–
+
–
Power
Supply
Reciever
A
B
T
C
A
B
T
(*1)
DYC: Signal cable
(*1) Wire for T terminal
With temperature sensor type : installed
Without temperature sensor type: not installed
Non-incendive field wire parameters of vortex flowmeter (DY)
and vortex flow converter (DYA).
Vmax=30V
Imax=165mA
Pi=0.9W
Ci=12nF
Li=0.15mH
Installation requirement between flowmeter, converter and
general purpose equirement.
Vt or Voc
Vmax It or Isc
Imax Po
Pi
Ca
Ci+Ccable La
Li+Lcable
Vt, Voc, It, Isc, Po, Ca and La are nonincendive field
wire parameters of general purpose equipment.
F090205_2.EPS
WARNING
1. The general purpose equipment must be FM
approved with Nonincendive field wiring
parameter which meet the above installation
requirements.
2. Installation should be in accordance with
National Electric Code, ANSI/NFPA70.
3. Dust-tight conduit seal must be used when
installed in class II and III environments.
4. Do not alter drawing without authorization
from FM.