Dual Seal (Option: /Cf11, /Cs11) - YOKOGAWA DY025 User Manual

Type "n" and Non-incendive
Hazardous Location
Class IIC, Zone 2,
Class I, II,
Division 2,Groups A, B, C, D,
E, F and G,
Class III, Division 1
[Integral type]
DY (flowmeter)
[Remote type]
DY-N (flowmeter) DY (converter)
A A
B B
T T
(*1)
C
DYC: Signal cable
(*1) Wire for T terminal
With temperature sensor type
Without temperature sensor type: not installed
Non-incendive field wire parameters of vortex flowmeter (DY)
and vortex flow converter (DYA).
Ui (Vmax)=30 Ii (Imax)=165mA
Ci=12nF Li=0.15mH
Installation requirement between flowmeter, converter and
general purpose equirement.
Uo Ui Io Ii Po
Lo Li+Lcable
Voc Vmax Isc Imax
La Li+Lcable
Uo, Io, Po, Co Voc, Isc, Ca and La are nonincendive field
wire parameters of general purpose equipment.
WARNING
• The general purpose equipment must be CSA
certified as the equipment which have type n or
non-incendive field wire parameters.
• Installation should be in accordance with
Canadian Electrical Code Part I.
• Dust-tight conduit seal must be used when
installed in class II and III environments.
• Do not alter drawing without authorization from
CSA.
Non Hazardous
Location
General Purpose
Equipment
+ +
Power
–
Supply
SUPPLY
–
PULSE
+
+
Receiver
–
+
+
Power
–
Supply
SUPPLY
–
PULSE
+ +
Receiver
–
: installed
Pi (Pmax)=0.9W
Pi Co Ci+Ccable
Ca Ci+Ccable
F100401_2.EPS
10. EXPLOSION PROTECTED TYPE INSTRUMENT

10.4.6 Dual Seal (Option: /CF11, /CS11)

Dual Seal:
Certified by CSA to the requirement of ANSI/ISA 12.27.01
No additional sealing required.
Primary seal failure annunciation: at the O-ring seal portion
between shedder bar and amplifier housing.
+
–
+
–
+
–
+
–
10-11 IM 01F06A00-01E