Dynasonics 701_771C Series Insertion Ultrasonic Flow Meter - Manual (Page 24)

Rev. 12/97 -23- D77X
If additional cable is required, contact the Dynasonics
factory to arrange for an exchange transducer with the
appropriate length of cable. Cables to 300 feet [90
meters] are available.
NOTE: An additional hole in the transmitter enclosure is
required for outputs. Drill the hole in the the enclosure
bottom taking care not to drive the drill bit into wiring or the
circuit boards with the transmitter.
The CTR pulse output is proportional to the flow rate
measuring scale. This output may be used one of two
ways:
?
To drive a 12V logic device.
?
To drive a low impedance, 12V device. Minimum
resistance 50 ohms.
The pulse output pulses with totalizer increments. The
connections are located on the right side of the signal
processing PCB in the back of the enclosure. The pulse
width is fixed at 100 milli-seconds. CTR “ - ” represents
circuit low. CTR “ + “ represents 12 Vdc pulse output.
PART 2 - TRANSMITTER INSTALLATION
CTR Output