Dynasonics 701_771C Series Insertion Ultrasonic Flow Meter - Manual (Page 23)

Rev. 12/97 -22- D77X
The 4-20mA output is proportional to the flow rate
measuring scale and can drive a load of up to 1000 ohms.
The output is isolated from earth ground and circuit low.
Connect the load to the 4-20 mA connection terminals
located on the inside of the D77 enclosure, matching
polarity as indicated.
Line power is connected by supplying power to the
appropriate terminals located inside of the D77 enclosure.
Use wiring practices that conform to local codes (National
Electric Code Hand book in the USA). Use only the
standard three wire connection. The ground terminal
grounds the instrument, which is mandatory for safe
operation.
CAUTION: Any other wiring method may be unsafe or
cause improper operation of the instrument.
It is recommended not to run line power with other signal
wires within the same wiring tray or conduit.
NOTE: This instrument requires clean electrical line
1. Guide the transducer terminations through the
transmitter conduit hole located on the left side of the
enclosure. Secure the transducer cable with the
supplied conduit nut.
2. The terminals on the transducer cable are coded with
wire markings. Connect the appropriate wires to the
corresponding screw terminals in the transmitter.
NOTE: The transducer cable carries low level signals.
Do not attempt to add additional cable to the factory
supplied transducer cable.
PART 2 - SERVICE AND MAINTENANCE PART 2 - TRANSMITTER INSTALLATION
4-20mA OUTPUT
Power Connections
Transducer
Connections