YOKOGAWA FVX110, Руководство пользователя

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<2. Handling Cautions>
2-14
IM 01S01C01-01EN
● Entity Model
Non-Hazardous
Locations
Hazardous Locations
F0210.ai
Terminator
Ex i
Field Instruments
(Passive)
Hand-
held-
Terminal
Supply Unit and
Safety Barrier
Terminator
Data
U
U
I
I.S. fieldbus system complying with Entity model
I.S. values Power supply-field device:
Po ≤ Pi, Uo ≤ Ui, Io ≤ Ii
Calculation of max. allowed cable length:
Ccable ≤ Co – ∑Ci – ∑Ci (Terminator)
Lcable ≤ Lo – ∑Li
Number of Devices
The number of devices (max. 32) possible on a
fieldbus link depends on factors such as the power
consumption of each device, the type of cable used,
use of repeaters, etc.
b. ATEX Flameproof Type
Caution for ATEX flameproof type
Note 1. FVX110 Fieldbus Segment Indicator
with optional code /KF25 for potentially
explosive atmospheres:
• No. KEMA 10ATEX0157 X
• Applicable Standard:
EN 60079-0:2012+A11:2013
EN 60079-1:2014
EN 60079-31:2014
• Type of Protection and Marking Code:
Ex db IIC T6 Gb, Ex tD IIIC T80ºC Db
• Group: II
• Category: 2G, 2D
• Temperature Class: T6
• Enclosure: IP66 / IP67
• Ambient Temperature for gas-proof:
–50* to 75ºC
* –15ºC when O-ring material is Fluoro-rubber.
• Maximum Surface Temperature for dust-
proof:
T80ºC (Tamb.: –30* to 75ºC)
* –15ºC when O-ring material is Fluoro-rubber.
Note 2. Electrical Data
• Supply voltage: 32 V dc max.
Output current: 15 mA dc
Note 3. Installation
• All wiring shall comply with local installation
requirements.
• Cable glands, adapters and/or blanking
elements with a suitable IP rating shall
be of Ex d IIC/Ex tb IIIC certified by ATEX
and shall be installed so as to maintain the
specific degree of protection (IP Code) of the
equipment.
Note 4. Operation
• Keep the “WARNING” label attached to the
indicator.
WARNING: AFTER DE-ENERGIZING,
DELAY 5 MINUTES BEFORE OPENING.
WHEN THE AMBIENT TEMP.≥65ºC, USE
HEAT-RESISTING CABLES AND CABLE
GLAND≥90ºC.
• Take care not to generate mechanical
sparking when accessing the instrument and
peripheral devices in hazardous location.
Note 5. Maintenance and Repair
WARNING
• 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
the product.
• In the case where the enclosure of the
Pressure Transmitter is made of aluminium,
if it is mounted in an area where the use of
category 2D apparatus is required, it shall
be installed in such a way that the risk from
electrostatic discharges and propagating
brush discharges caused by rapid flow of
dust is avoided.
• The instrument modification or parts
replacement by other than an authorized
Representative of Yokogawa Electric
Corporation is prohibited and will void the
certification.