Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 60)

<10. EXPLOSION PROTECTED TYPE INSTRUMENT>
10-11
IM 01F06F00-01EN
10.3 IECEx
WARNING
• Only trained persons use this instrument in
industrial locations.
• Electrostatic charge may cause an explosion
hazard.
Avoid any actions that cause the generation
of electrostatic charge, such as rubbing with
a dry cloth on coating face of product.
 Technical Data
• Flameproof
Applicable Standard : IEC60079-0: 2007-10,
IEC60079-1: 2007-04
Certifi cate : IECEx DEK 11.0077X
Type of Protection:
Ex d IIC T6…T1 Gb (Integral Type Vortex
Flowmeter and Remote Type Vortex Flow
Detector)
Ex d IIC T6 Gb (Remote Type Vortex Flow
Convertor)
Specifi cation of Protection:
Process Temperature: (Integral Type Vortex
Flowmeter and Remote
Type Vortex Flow
Detector)
Temperature Class Process Temperature
T6 -29°C to +80°C
T5 -29°C to +100°C
T4 -29°C to +135°C
T3 -29°C to +200°C
T2 -29°C to +300°C
T1 -29°C to +450°C
*1 Note: Use /HT version above 250°C
Temperature Class: T6 (Remote Type Vortex Flow
Convertor)
Ambient
Temp.:
–29 to +60°C (Integral Type Vortex
Flowmeter and Remote Type Vortex Flow
Detector)
–40 to +60°C (Remote Type Vortex Flow
Convertor without indicator)
–30 to +60°C (Remote Type Vortex Flow
Convertor with indicator)
Power Supply: 9 to 32Vdc max.
Special Fastener: Class A2-50 or more
Special conditions for safe use
1. For process temperatures above 250°C the fl ow
meters of the /HT version must be used.
 Installation
WARNING
• All wiring shall comply with local installation
requirements and local electrical code.
• Use the suitable heat-resisting cables (over
90°C) for the digitalYEWFLO Model DY
Series Vortex Flowmeter when the ambient
temperature exceeds 60°C and/or the
process temperature exceeds 200°C.
• The cable entry devices shall be certifi ed in
type of protection fl ame proof enclosure “d”
and suitable for the conditions of use and
correctly installed.
• Unused apertures shall be closed with
certifi ed blanking elements in type of
protection fl ame proof enclose “d”.
The grounding terminals are located on the inside
and outside of the terminal area.
Connect the cable to grounding terminal in
accordance with wiring procedure (1) or (2).
Case
Cable
Screw
(1) Internal grounding terminal (2) External grounding terminal
Washer
Washer
Cable Clamp
Screw
F1006.ai
Figure 10.2 Wiring Procedure for Grounding
Terminals