Baker Hughes Panametrics Sentinel LCT8, Руководство пользователя

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Figure 16: Wiring the AC line power
Figure 17: Wiring the DC line power
NOTE: All wires shall have a temperature/type rating 10K
above the maximum service temperature of 85°C, be
stripped back 5/16 in. (8 mm) and torqued to a minimum of
4.4 in.-lb (0.5 N-m).
3. Run the power connections to the power terminal block
shown in Figure 16 (AC power) or Figure 17 (DC power)
above. The use of 12-18 AWG (3.3 - 0.82 mm2) wire is
recommended for the power connections.
4. Strip 1/4-in. of insulation from the end of each of the three
line power leads.
5. Route the cable through the chosen conduit hole and
connect the line power leads to terminal block TB1 ,
using the pin number assignments shown in Figure 31 on
page 18 and Figure 16 on page 11 or Figure 17 on
page 11 .
6. Leaving a bit of slack, secure the power line with the
cable clamp.
WARNING!
Make sure both covers, with their o-ring seals,
are installed, and the set screws tightened,
before applying power in a hazardous
environment.
7. After the line power has been connected to the flow
transmitter, replace the side cover, tighten the set screw
using a 2.5 mm hex wrench and proceed to the
next section.
2.5.4 Wiring the serial port
The flow transmitter is equipped with a built-in serial
communications port. This port is user-selectable to be
either an RS232 or RS485 port. For more information on
serial communications refer to Panametrics document EIA
serial communications (916-054), which is included on the
flow manuals CD included with your order. The use of 12-24
AWG (3.3 - 0.2 mm
2
) twisted pair wiring is recommended
for single conductors, and a minimum 18 AWG (1.5 mm
2
) is
recommended for two conductors per terminal.
2.5.4.1 Wiring the serial interface
To wire the serial port, refer to Figure 31 on page 18 and
complete the following steps:
1. Disconnect the main power to the meter and remove the
wiring access cover.
2. Install the required cable gland in the chosen conduit
hole of the electronics enclosure.
3. Feed one end of the cable through the cable gland, wire
it to terminal block TB2 , and secure it.
SGND (COM)
TD (–)
RD (+)
COM
R (RS485+)
T (RS485–)
Network interface TB2
SEN 898
Figure 18: Serial connections
Attention European customers!
To meet CE Mark requirements, all cables
must be installed as described in Appendix
A . CE Mark compliance and high noise
environments on page 111 .
4. If the wiring of the unit has been completed, reinstall the
wiring access cover and tighten the set screw.
11