Dynasonics TFXM Series Ultrasonic Multi-Channel Flow Meter - Manual (Page 39)

Rev. 8/02
-3. 1- TFXM
Note: The TFXM flow meter system requires a full pipe of
liquid before a successful startup can be completed. Do not
attempt to make adjustments or change configurations until a full
pipe is verified.
Note: If Dow 732 RTV was utilized to couple the transducers to
the pipe, the adhesive must fully cure before power is applied to
the instrument. Dow 732 requires 24 hours to cure satisfactorily.
If Dow 111 silicone grease was utilized as a couplant, the curing
time is not required. [DTTH—High Temperature Transducers util-
ize Dow 112 couplant and orange silicone pads mounted between
the transducer and the pipe. This setup does not require any cur-
ing time.]
Procedure:
1. Verify that all wiring is properly connected and routed as
described previously in this manual.
2. Verify that the transducers are properly mounted as described
in Part 2 of this manual.
3. Apply power to the flow meter. The TFXM display backlighting
will illuminate and the software version number will appear on
the display.
4. Confirm that Signal Strength is greater than 2% for each
measurement channel. If it is not, verify that proper transducer
mounting methods and liquid/pipe characteristics have been
entered. The pipe must be full of liquid in order to make
this measurement.
5. Verify that the actual measured Sound Speed of the liquid is
within 0.5% of the table value utilized in the BASIC menu
setup.
6. Once the meter is properly operating (proper signal strength
and measured sound speed has been achieved), refer to the
later portions of this manual section for additional
programming features.
PART 3 - STARTUP AND CONFIGURATION
Before Starting
the
Instrument
Instrument
Startup