Dynasonics 701_771C Series Insertion Ultrasonic Flow Meter - Manual (Page 18)

Rev. 12/97 -17- D77X
PROBE CABLES
Before inserting the probe into the pipe, the sensor cables
should be routed to the transmitter location. Verify that
the supplied cable length is sufficient to meet the
installation requirements. If the supplied length is found to
be insufficient, contact the factory to make probe
exchange arrangements.
CAUTION: Do not proceed with probe insertion should
the supplied cable length be insufficient for the installation.
Probes that have been exposed to process liquids are not
exchangeable.
CAUTION: The probe cables are designed to carry low
level signals that are developed by the sensor. Care
should be taken in routing the cables. Avoid running
cables near sources of high voltage or EMI\RFI. Also
avoid routing the cables in cable tray configurations,
unless the trays are specifically used for other low
voltage, low level, signal cables.
CAUTION: The internal DT7 Probe wiring is epoxy
encapsulated to seal it from moisture. The Probe is
provided with two coaxial cables to shield the low level
signals and must be continuous to the DT7 Probe
Transmitter. Do not splice the probe cable to extend it's
length as the integrity of the shielding must be maintained
to insure proper sensor operation. The cable may be cut
to a shorter length. If you have extra cable do not coil the
excess wire in the enclosure.
1. Run the lower Jam nuts down to a point that
approximates the final insertion position or at least far
enough to allow insertion into the Insertion Fitting. Using
the threaded rods as a guide, position the probe in the
Insertion Fitting. Continue to insert the probe as far into
the isolation assembly as possible. The probe tip will
come in contact with the closed "ball" in the isolation
valve.
PART 2 - TRANSDUCER INSTALLATION
Step E - Cable Routing