Xylem FM500 ULTRASONIC FLOW METERS - Manual (Page 19)

Page 19
The SPU wiring compartment is equipped with:
six large liquid-tight cable gland connectors,
two small
2 each for the transducer cables
3 each for the process control relay connection cables
The blank grommet plug should be used when the
liquid-tight cable gland connectors, and
a communications cable liquid-tight cable gland grommet and plug.
To ensure that the SPU enclosure remains water-tight, the following cable glands should
be used:
The six large liquid-tight connectors can be used with any cable diameter from .200
to .394 inches (5.1 to 10.0 mm). They are provided for:
1 each for the power input cable
The two small liquid-tight connectors can be used with any cable diameter from .118
to .255 inches (3.0 to 6.5 mm). They are provided for:
1 each for the 4-20 mA output signal cable
1 each for the pulse output signal cable
The communications cable grommet can be used with any cable diameter from .190
to .205 inches. It is provided for any one of the following cable types:
USB cable
Ethernet Cable
RS-232 serial cable
RS-485 serial cable
communications cable grommet is
not required.
3.8
Cable Gland
Liquid-Tight
Connections
5k
5-30 VDC
Frequency output (0-1000 Hz)
Open Collector output, 50% duty cycle
Current
input
Current
output
4-20mA receiver
Flow Meter
Current output (4-20 mA)
Maximum load 1000 ohms
Digital Pulse Receiver
Flow Meter
Frequency
input
Ground
1 2 3 4 5
Signal Output
Terminal Block
SIGNAL OUTPUT CONNECTIONS
Neutral
input
Line
intput
110 to 240 VAC 50/60Hz
40 WATTS MAX
15 to 30 VDC
40 WATTS MAX
Flow Meter
Positive
(+)
Negative
(-)
1 2 3 4 5
Power Input
Terminal Block
POWER INPUT CONNECTIONS
(Open Collector output
50% duty cycle)
Ultrasonic Flowmeter