Instruction manual

RFT9709 Transmitter Instruction Manual 25
Wiring
continued
Wiring instructions
Instructions for wiring the RFT9709 to a pressure transmitter are
provided below.
• Use Figure 2-16a for an internally powered configuration.
• Use Figure 2-16b for an externally powered (multidrop) configuration.
Figure 2-16a. Pressure transmitter wiring, internally powered
Figure 2-16b. Pressure transmitter wiring, externally powered (multidrop network)
WARNING
Failure to comply with requirements for intrinsic
safety in a hazardous area could result in an
explosion.
Pressure transmitter wiring is not intrinsically safe.
Keep pressure transmitter wiring separated from
power-supply wiring, intrinsically safe sensor wiring, and
any other intrinsically safe wiring.
Pressure transmitter
SMART only
(1151 or 3051)
RFT9709 terminals
for output wiring
11 12 13 14 15 16 17 18 19 20
21 22
VF+/DP+
(signal line)
DP– (return)
Pressure transmitter
SMART only (1151 or 3051)
RFT9709 terminals
for output wiring
PV+ (signal line)
PV– (return)
11 12
13 14 15 16 17 18 19 20 21 22
250 ohm ±5%
0.5 W
250 ohm ±5%
0.5 W
Power
supply
24 VDC
09wire.fm Page 25 Monday, March 1, 1999 4:31 PM