TechnipFMC Smith Meter MPU 1600c, Инструкция по установке, эксплуатации и обслуживанию

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Issue/Rev. 0.1 (11/18) ║ MNKS025 • Page 21
MPU Series C I/O/M Manual Operation of MPU
The meter electronics are mounted in a flame-proof (explosion-proof) enclosure which
is then mounted on top of the meter housing. Transducers are wired into the electronics
enclosure by means of a cabling system. The meter electronics perform all signal process-
ing calculations and outputs the indicated flow rate. The calculated flow rate is transmitted
using the either pulse output (0 – 10,000 Hz) or the analog (4-20 mA) output. Modbus
over TCP/IP Ethernet or serial RS485 communications can also be used to communicate
flow rate as well as historical data and diagnostic information to other ancillary systems
such as a P.C. or a PLC system.
The cable, conduit and conduit fittings must meet installation requirements, such as haz-
ardous area classifications, humidity, temperature, voltage, current and others. All conduit
connections must be installed with approved conduit seals installed within the required
distance per the applicable electrical code(s).
CRITICAL: If the MPU is NOT connected to an Ethernet network then TechnipFMC
strongly recommends that an Ethernet cable is connected to the UMCB - ETH1 RJ45
connector on the meter and is fed into the closest control room. The cable does not need
to be connected to any device but shall be available for connection by either service or
Weights & Measures personnel. This way there will be no need to open the meter elec-
tronics enclosure in the field for verification of metrological parameters, applying software
upgrades, and/or performing remote meter diagnostics.
3.9. For ATEX and IEC Ex Installations
The following instructions apply for the certified equipment listed in the equipment covered
portion of the table below as per Directive 2014/34/EU (ATEX Directive):
Standards used:
• IEC 60079-0 6th Edition, EN 60079-0: 2012 +A11:2013, UL 60079-0 4th Edition
• IEC 60079-1 6th Edition, EN 60079-1: 2007, UL 1203 4th Edition
• IEC 60079-11 6th Edition, EN 60079-11: 2012, UL 60079-ll 5th Edition, UL 913 7
Edition UL 1203 4th Edition
• IEC 60079-28 1st Edition, EN 60079-28:2007
Cable entries must be in accordance to EN/IEC 60079-1 section 13.
For wiring systems or fiber optic cables utilizing cable glands, the gland and or thread
adaptor must be Ex d certified. The cable end must be securely installed and depending
on the cable type be properly protected from mechanical damage.
For wiring systems utilizing conduit, an Ex d certified sealing device must be used imme-
diately at the entrance of the enclosure. Any unused entry must be suitably blocked with
an Ex d certified plug. Any optical feed-through or bushing used must be Ex d certified.
Any fiber optic cables must be installed in accordance with the appropriate local stan-
dards such as: IEC/EN 60079-14, National Electrical Code (NFPA 70, esp. Article 770),
Canadian Electrical Code (CSA C22.1-12, esp. Section 56), for example, or other local
codes, as applicable.
The maximum ambient temperature for the enclosure is 60°C; if the enclosure is directly
mounted to a process piping system that exceeds this value then the enclosure(s) shall
be remotely mounted to guarantee the 60°C ambient is not exceeded Direct exposure to
long-term sun exposure of the meter should be avoided. If this cannot be guaranteed a
sun shade is necessary.
Equipment bonding shall be provided at the external grounding facility terminal, external
connection is not required when using metallic conduit or armored cable.
Touch Screen: The touch screen (if provided) is protected by an intrinsic safe barrier.
The enclosure must be grounded as per national electrical code regulations, such as
NEC/ CEC etc.