42
X-VA-MT3809G-MT3810G-eng/541B182AAG/A/2022-10
Brooks Instrument
Installation Manual MT3809G & MT3810G
Section 2 Installation
Electrical Connections to MT3809 with F
OUNDATION
Fieldbus Transmitter, Alarms and Pulse Output
a) Before electrical connection, install the meter into the pipeline as
described in previous Section 2-5.
b) For electrical installation follow the general F
OUNDATION
Fieldbus
practices and take the following into account:
i. To avoid electrical interference and to meet the Electro Magnetic
Compatibilty (EMC directive) requirements, use shielded twisted pair
cables.
ii. In case of installation into explosion hazardeous environments it is
important to eliminate a potential incentive level of circulating current
through the cable shield in the event that there are local differences in
chassis ground potential between the two ends of the cable. Therefore,
cable shields shall be connected to chassis ground (earth) in accordance
with the applicable regional & local installation code. A terminal screw
inside the device allows for shield to chassis connection in case the
applicable installation regulation requires earthing at the transmitter end.
LLL(QVXULQJDSURSHUO\VSHFL¿HGSRZHUVXSSO\
• Bus supply voltage 9 .. 32 Vdc
• Nominal current 12mA
LY8VHFDEOHVDVVSHFL¿HGLQ,(&6WD\EHORZWKHPD[LPXP
DOORZDEOHFDEOHOHQJWKZKLFKGHSHQGVXSRQWKHFDEOHVSHFL¿FDWLRQVWKH
number of network devices and the network topology. Connect the
transmitter to the network following IEC 61158-2.
c) The housing of the transmitter should be grounded in accordance with
WKHDSSOLFDEOHLQVWDOODWLRQUHJXODWLRQV:KHQWKHGHYLFHLVQRWVXI¿FLHQWO\
grounded via the process cables, a grounding terminal screw is available
on the transmitter housing for earth connection.
d) Transmitter wiring connection diagrams are given in Section 2-7-1
Ensure that the installation complies with given hazardous area protection
requirements.
e) Transmitter wiring connection diagrams are given is Section 2-7-1.
Ensure that installation complies with given hazardous area protection
requirements.
i. Intrinsically safe installations require the use of barriers, power supply
limits and cable parameters as shown in the installation diagram. All
connections are made in the transmitter housing.
Refer to Figures 2-5a/2-5b and 2-8a/2-8b.
LL,IWKHDUHDFODVVL¿FDWLRQLV'LYLVLRQEDUULHUVDUHQRWUHTXLUHGDQG
cable parameters are not applicable. However, the electrical code will
require the use of conduit for wire protection.
Refer to Figures 2-5a/2-5b and 2-8a/2-8b.
LLL)RUÀDPHSURRILQVWDOODWLRQWKHRSWLRQDOH[SORVLRQSURRIHQFORVXUHLV
required and explosion proof installation methods must be followed.
Refer to Figure 2-9.
