Technical Data; Wiring; Operation; Maintenance And Repair - YOKOGAWA DY025 User Manual

10.2 FM

10.2.1 Technical Data

• Explosion Proof
Applicable Standard: FM3660 1998, FM3611 1999,
FM3615 1989, FM3810 1989,
Including Supplement 1 1995,
ANSI/NEMA 250 1991
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 Temperature: -29 to 60°C (Integral Type Flowmeter
and Remote Type Flowmeter)
-40 to 60°C (Remote Type Converter)
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
Output Signal (Remote Type Flowmeter):
Output Signal to Converter; 30Vp-p, 100µAp-p
Input/Output Signal (Remote Type Converter):
Current Output; 4 to 20mAdc
Pulse Output; On=2Vdc, 200mA
Input Signal from Flowmeter; 30Vp-p, 100µAp-p
Maximum Working Pressure: 16MPa (DY015 to DY200)
Electrical connection : ANSI 1/2 NPT female (Special)
• Intrinsically Safe
Applicable Standard: FM3600 1998, FM3610 1999,
FM3611 2004, FM3810 2005,
Including Supplement 1 1995
ANSI/NEMA 250 1991,
ISA-S12.0.01 1998
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 +60°C
(Remote Type Converter)
Off=42Vdc, 4mA
Off=42Vdc, 4mA
5MPa (DY250 and DY300)
10. EXPLOSION PROTECTED TYPE INSTRUMENT
Maximum Working Pressure: 16MPa (DY015 to DY200)
Indoors and Outdoors: NEMA Type 4X
Electrical Parameters:Vmax=30Vdc, Imax=165mAdc,
Electrical connection : ANSI 1/2 NPT female

10.2.2 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".
• 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.

10.2.3 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.

10.2.4 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 FM Approvals.
10-5
5MPa (DY250 and DY300)
Pi=0.9W, Ci=12nF, Li=0.15mH
IM 01F06A00-01E