B-144-12-E
13
①
Take off four hex socket head bolts (M6) on
the front of register assembly and remove the
front cover.
②
Removing the front cover provides access to a
4-post terminal block.
Terminal identification label is found on the
back of front cover.
③
Using crimp-style terminals, ensure good
electrical connections.
NOTE:
1. Models which have no remote output and of
nonexplosionproof type are not provided with
pressuretight packing (see page 5).
2. Earth ground the Ext. GND terminal to the
instrumentation ground earth.
8. WIRING INSTRUCTIONS
(Refer also to the wiring instructions of respective receiving
instrument instruction manual.)
8. 1 Wiring Connections at Terminals
(1) Cables for field wiring
The following cables should be used unless otherwise specified:
Cables l.25mm
2
in conductor area and 8.5 - 12 mm in finished O.D. As to the number of conductors,
select 2 to 4 according to your particular application. It is recommended that their shield be grounded at
the receiving instrument.
CAUTION: In case of TIIS explosionproof type used under the ambient temperature of
45°C or higher, use a cable resistant to the temperature of 75°C or higher.
(2) Transmission length
The maximum transmission length is typically one kilometer.
NOTE: If it exceeds one kilometer, consult the factory.
(3) Inductive interference prevention
To minimize the possibility of stray current pickup, the field wiring should be routed sufficiently away from
existing power cables or power circuits.
(4) Precautions about Wiring Connections
①
The terminal block has M3.5 screw posts; use crimp-type terminal lugs that fit snugly over cable end.
②
Do not fail to earth ground the preamplifier GND terminal.
③
The cable should extend downward from cable entrance to prevent rainwater from traveling along it
and entering the equipment.
④
If lightning strikes are anticipated, provide a surge arrestor.
CAUTION: Make sure of the validity of meter (transmitter) and companion receiving
instrument combination by referring to their model numbers, serial numbers,
etc. before you make electrical connections.
8. 2 Terminal Connections
Hex Wrench
O-Ring
Front Cover
Hex Socket
Head Bolts
Ext. GND Terminal
Int. GND terminal
Remote Output
Terminals
