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IM 1F6A0-01E
9-4
9. EXPLOSION PRTECTED TYPE INSTRUMENT
9.2
FM
9.2.1
Technical Data
• Explosion Proof
Type of Protection:Explosionproof for Class I, Division 1,
Groups A,B, C and D;
Dust-ignition proof for Class II/III,
Division 1, Groups E, F,and G.
"SEAL ALL CONDUITS 18 INCHES." " WHEN
INSTALLED IN DIV.2, SEALS NOT REQUIRED"
Enclosure Rating: NEMA TYPE 4X
Temperature Code: T6
Ambient Temperatue: -29 to 60
C (Integral Type Flowmeter
and Remote Type Flowmeter)
-40 to 60
C (Remote Type Converter)
Ambient Humidity: 0 to 100%RH
Power Supply: 42Vdc max. (Integral Type Flowmeter and
Remote Type Converter)
Output Signal (Integral Type Flowmeter):
Current Output; 4 to 20mAdc
Pulse Output;
On=2Vdc, 200mA
Off=42Vdc, 4mA
Output Signal (Remote Type Flowneter):
Output Signal to Converter; 30Vp-p, 100
µ
Ap-p
Input/Output Signal (Remote Type Converter):
Current Output; 4 to 20mAdc
Pulse Output;
On=2Vdc, 200mA
Off=42Vdc, 4mA
Input Signal from Flowmeter; 30Vp-p, 100
µ
Ap-p
Maximum Working Pressure: 15MPa (2160psi)
(DY015 to DY200)
5MPa (720psi)
(DY250 and DY300)
Coating of Enclosure: Epoxy resin coating or Polyurethane
resin coating.
• Intrinsicall Safe
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 Flowmeter)
–29 to +80
°
C
(Remote Type Flowmeter)
–40 to +80
°
C
(Remote Type Converter)
Ambient Humidity: 0 to +100% RH (No condensation)
Indoors and Outdoors: NEMA Type 4X
Electrical Parameters:Vmax=30Vdc, Imax=165mAdc,
Pi=0.9W, Ci=12nF, Li=0.15mH
Electrical connection : ANSI 1/2 NPT female
9.2.2
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".
• Instrinsically Safe
WARNING
• The FM Approved Hand Held Communicator
may be connected at any point in the loop
between the digitalYEWFLO and the Control
Equipment.
9.2.3
Operation
• Explosion proof
WARNING
• Note a warning label worded as follows.
Warning: OPEN CIRCUIT BEFORE REMOV-
ING 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.
9.2.4
Maintenance and Repair
WARNING
• The instrument modification or part replace-
ments by other than authorized representative
of Yokogawa Electric Corporation is prohibited
and will void the approval of Factory Mutual
Research Corporation.