Skip to Content
Home └DMA Design and Monitoring └Module 3_ DMA Design & Monitoring_ Instrumentation in DMAs

DMA Design and Monitoring

0 %

Completed

Course content

Module 3_ DMA Design & Monitoring_ Instrumentation in DMAs

10 XP
Prev Next
Fullscreen Share
Field Staff
Rating
0 0

There are no comments for now.

Join this Course
to be the first to leave a comment.

1. The volume recorded by a flow logger does not match the bulk meter’s totaliser. What should be checked before using the data?
Increase the logging duration without changing the setup. Verify the pulse factor and scaling, then reconcile the logger totals with the meter index. Use the logger total because electronic records are always more accurate. Use the average of the two totals without investigating the difference.
2. During a clamp-on ultrasonic test, the pipe dimensions are unverified and the installation conditions do not meet the manufacturer’s requirements. What should the technician do?
Accept the result if the displayed reading is steady. Average several readings to compensate for the installation problems. Reject the result, document the limitations and request a better test point or method. Accept the result if it is close to the expected flow.
3. Which approach should be used when selecting pressure logger locations within a DMA?
Include the inlet/PRV, the approved average-zone pressure point and the critical service point, according to the test objective. Choose only the chambers that are easiest to access. Install all loggers near the inlet because pressure is the same throughout the DMA. Always treat the highest-elevation location as the critical service point.
4. Why must flow meters, pressure loggers and telemetry records use the same time reference and time zone?
To make every device use the same measurement units. To prevent all telemetry transmission gaps. To remove the need for a timestamped field-event log. To correctly match flow and pressure changes with recorded field operations.
5. A before-and-after chart shows lower flow following a leak repair. What must be checked before claiming NRW savings?
Only whether the repair was completed. Whether pressure, demand, boundary status, meter quality and reporting windows are comparable. Only whether the lowest recorded flow has decreased. Whether the chart was received through telemetry rather than downloaded manually.