Blue-White Sonic-Pro Hybrid Ultrasonic Flowmeters - Manual (Page 18)

Open the front cover of the SPU. Position the Doppler/Transit-Time switch to the
preferred operating mode (factory setting is transit time).
Operate the meter in the Doppler mode if the fluid to be measured contains
more than 10% particles.
The Sonic-Pro transducer connections are pre-wired at the factory. If a main AC input
power cord selection was made when ordering, the power cord and main AC power input
connection is factory wired. When powering the meter by DC, a power cable for this
purpose should be installed in one of the cable gland liquid-tight connectors. See section
3.8 below. The meter will automatically adjust for any main power input that is within
the power requirements range of 110 to 240 volts AC or 15 to 30 volts DC. See the
diagram below for wiring of output signals, communications signals and process control
relays.
The transducer cable length is fixed. Do not attempt to modify the length of the cables.
Various cable lengths are available from the factory. Contact the factory if you need
assistance. Shielded cable is recommended for signal output connections.
Operate the meter in the
Transit Time mode (best accuracy) if the fluid contains little or no particles (up to 10%
maximum).
3.6
Select the
Measurement
Method
Doppler/Transti-Time Switch
3.7
Electrical
Connections
CAUTION
risk of electric shock
All high voltage connections in the front wiring compartment are
considered “finger safe”. However,
use care when connecting high voltage wires to the plug-in type terminal
blocks.
disconnect electricity to the meter and
RS232
USB ETHERNET
RS485
PROCESS CONTROL RELAYS
(THREE EACH) 10A 250V AC
R1
R2
R3
COM
NC
NO
COM
NC
NO
COM
NC
NO
TRANSDUCER
INPUTS
Tx 1 Tx 2
RED (+) RED (+) BLK (-) BLK (-) GRN GRN
mA Hz
POS (+) NEG (-) GRN
SIGNAL
OUTPUTS
NEG (-) POS (+)
DC AC
DC (+) DC (-) GRN
AC LINE AC NTRL
POWER INPUT
SD CARD
DATA LOG
(REMOVE)
MODE SWITCH
T D
INDICATOR
LIGHTS
COMMUNICATIONS
CONNECTOR PANEL
WARNING
INPUT POWER LIMITS
AC INPUT
110~240Vac 50/60Hz-40W
DC INPUT
15~30 Vdc-40W
SETUP BUTTON 1A 250V (5x20mm)
slow blow
littlefuse 239001.XP
FUSE
CAUTION
risk of electric shock
RED (+) BLK (-) GRN
WIRING CONNECTIONS
Page 18 Sonic-Pro
Industries, Ltd. Industries, Ltd.
ProSeries
by Blue-White Ind.
TM
There are no user serviceable items inside the rear meter enclosure. If it
becomes necessary to open the back cover, be sure to disconnect the main
power supply before opening the back cover of the enclosure.
CAUTION
risk of electric shock
12-30
AWG