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F-1500 Turbine Flow Meter Manual 02/18 - 1018-6 / 35726
Page 23
2.5.4 Optional Backlight Connection
The loop power meter has an optional backlight connection provided. It is intended to be
powered by a separate 12 to 36 VDC at 35 mA max. power supply or by the pulse power
input. Both options are shown below.
12 to 36 VDC
35 mA max.
Figure 13. Backlight Using External Power Supply
2.5.5 Remote Electronics Wiring
The remote electronics enclosure should be mounted in a convenient, easy to reach
location. For hazardous location installations, make sure to observe agency requirements
for installation. Allow some slack in the interface cable between the junction box and the
remote electronics enclosure. To prevent damage to the wiring connections, do not put
stress on the terminations at any time.
The meter is shipped with temporary strain relief glands at each end of the cable.
Disconnect the cable from the meter’s terminal block inside the junction box - not at the
remote electronics enclosure. Remove both glands and install appropriate conduit entry
glands and conduit. When installation is complete, re-connect each labeled wire to the
corresponding terminal position on the junction box terminal block. Make sure to connect
each wire pair’s shield. Note: Incorrect connection will cause the meter to malfunction.
RED 1
BLK 1
BLK 2
RED 2
SHLD 1&2
SENSOR V1
VORTEX
GND
PWR
SENSOR V2
SHIELD
Figure 14. Loop-Powered Volumetric Flowmeter
Junction Box Sensor Connections
!
i
!
IMPORTANT NOTE
Numeric code in junction box label matches wire labels.
PRESSURE
TEMPERATURE
RED 2
SHLD 1&2
BLK 2
SHIELD
SHIELD
SENSOR V
2
SHIELD
SENSOR V
1
VORTEX
BLK 1
PWR
S
1
E
1
S
2
T
2
T
1
T
3
E
2
T
4
GND
RED 1
P
3
P
1
P
2
P
4
SHLD 3&4
SHLD 5&6
RED 6
BLK 6
BLK 5
RED 5
BLK 3
BLK 4
RED 4
RED 3
Figure 15. Loop-Power Mass Flowmeter
Junction Box Sensor Connections