Thermo Scientific DCT6088, User Manual

Page: 83 / 121

Maintenance & Troubleshooting
Replacing Sonic Coupling Compound
Figure 7–4. Current loop module alignment
7. Replace the two screws and four insulating washers.
8. Select the loop powering option and connect the wiring to the module.
Refer to
“The Current Loop” (Chapter 3).
9. Replace the sheet metal access cover and reconnect power to the
flowmeter.
10. Calibrate the current loop according to “The Calibration Menu”
(Chapter 5).
Replacing Sonic
Coupling
Compound
Any voids or air gaps that exist in the coupling compound beneath the
transducers can reduce the signal and render the flowmeter inoperative.
Coupling compound should be protected from washout and replaced as
required. Annual replacement is recommended for most applications to
maintain optimal performance.
Follow the steps below to replace the coupling compound.
1. Remove the transducers from the pipe.
2. Clean the old compound from the transducers and the pipe.
3. Apply a wide bead of compound lengthwise down the center of each
transducer face.
Thermo Fisher Scientific DCT6088 User Guide 7-3