Dynasonics DDFXD Doppler Ultrasonic Flow Meter - Manual (Page 50)

50 06-DPP-UM-00147 02/12
PART 5 - STARTUP AND TROUBLESHOOTING
DFX START-UP REQUIREMENTS
NOTE: The DFX flow meter system requires a full pipe of flowing liquid before a successful startup evaluation can be completed.
Do not attempt to make adjustments or make Manual configuration changes until a full pipe of flowing liquid is verified.
NOTE: If an RTV sealant was utilized to couple the transducers to the pipe, the sealant must fully cure before power is applied to
the instrument. Most RTVs require 24 hours to cure satisfactorily. It is very important that the transducers are not moved during
the curing process – air bubbles can form between the transducer and the pipe wall and influence performance. If silicone grease
was utilized as a couplant, the curing time is not required.
PROCEDURE:
1) Verify that the DT9 or DP7 transducer has been properly installed and wired – See Part 2.
2) Verify that the DFX power supply jumper settings are properly configured for the power supply
that will be utilized – See Part 3.
3) Verify that the DFX is properly programmed – See Part 4.
4) Apply power.
5) On initial power-up, the DFX microprocessor conducts a series of self-diagnostic tests, base-line
measurements and begins to buffer liquid velocity data. During this start-up, approximately 30
seconds, flow rate readings and outputs will be inhibited.
6) After the start-up routine has completed running, the meter will begin to display flow rate and/or
total as configured.
7) If an ERROR appears on the DFX lower display, pleaser refer to the following Troubleshooting
pages for resolution.