Yokogawa digitalYEWFLO (DY) - Manual (Page 156)

<14. EXPLOSION PROTECTED TYPE INSTRUMENT>
14-5
IM 01F06A00-01EN
• Intrinsically Safe
Applicable Standard: FM3600 1998, FM3610 2010,
FM3611 2004, FM3810 2005,
NEMA 250 1991,
ANSI/ISA-60079-0: 2009,
ANSI/ISA-60079-11: 2009
Type of Protection: Intrinsically safe for Class I, II,
III, Div.1, Groups A, B, C, D, E,
F and G,T4 and Class I, Zone
0, AEx ia IIC T4 Nonincendive
for Class I, II, Div. 2, Groups A,
B, C, D, F and G, Class III,Div.1,
T4, and Class I, Zone 2, Group
IIC, T4
Ambient Temperature: –29 to +60°C
(Integral Type Vortex
Flowmeter)
–29 to +80°C
(Remote Type Vortex Flow
Detector)
–40 to +60°C
(Remote Type Vortex Flow
Converter)
Indoors and Outdoors: Type 4X
Electrical Parameters: Vmax=30Vdc,
Imax=165mAdc,
Pi=0.9W, Ci=12nF,
Li=0.15mH
Electrical connection : ANSI 1/2 NPT female
(2) Wiring
• Explosion proof
WARNING
• All wiring shall comply with National
Electrical Code ANSI/NFPA 70 and Local
Electrical Code.
• “SEAL ALL CONDUITS 18 INCHES” "
WHEN INSTALLED DIV.2, SEALS NOT
REQUIRED".
• Intrinsically Safe
NOTE
• The FM Approved Hand Held Communicator
may be connected at any point in the loop
between the digitalYEWFLO and the Control
Equipment.
(3) Operation
• Explosion proof
WARNING
• Note a warning label worded as follows.
Warning:
OPEN CIRCUIT BEFORE
REMOVING COVER.
INSTALL IN ACCORDANCE WITH
THE INSTRUCTION MANUAL (IM)
IF6A1-01E.
• 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 modifi cation or part
replacements by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void the
approval of FM Approvals.