? What Is Flow Meter Verification?
Flow meter verification involves comparing a meter’s reading with an independent measurement or reference under defined operating conditions.
The Lanry TF1100-CH handheld ultrasonic flow meter can be used to measure flow externally at a suitable section of pipe. Its reading can then be compared with that of an existing flow meter.
This provides useful information during maintenance and troubleshooting. However, a comparison alone does not constitute formal calibration or prove which instrument is correct.
+ How Can the TF1100-CH Help with On-Site Testing?
1. Check Unexpected Flow Readings
If an installed meter reports an unusually high or low flow rate, use the handheld meter to measure at a suitable nearby location. A significant difference may indicate an installation issue, different measurement conditions, or a problem with one of the instruments.
2. Investigate Flow Changes
The TF1100-CH can help engineers check flow changes in water supply, cooling water, and other compatible liquid systems. Measurements taken at different times can help identify whether the flow changes with pump operation, valve position, or process demand.
3. Support Preventive Maintenance
Maintenance teams can use portable flow measurement to inspect selected pipelines without installing permanent instruments at every location. This is particularly useful in facilities with many pipelines or limited access to permanent flow measurement points.
How Can You Make the Comparison Reliable?
For a meaningful comparison:
- Measure under stable operating conditions.
- Confirm that the pipe is full.
- Enter the correct pipe and liquid parameters.
- Install the clamp-on sensors according to the manufacturer’s instructions.
- Allow the reading to stabilize before recording results.
- Consider the distance between measurement locations and possible differences in flow conditions.
Avoid comparing readings taken at substantially different times or under changing pump and valve conditions. The accuracy of the handheld meter and the installed instrument should also be considered.
When Is a Handheld Flow Meter Not Enough?
A portable meter may not provide a reliable comparison if the pipe material is unsuitable, the acoustic signal is weak, the pipe is partially full, or the flow is highly disturbed. In these situations, engineers may need another measurement method or a more suitable test location.
Frequently Asked Questions
Can the TF1100-CH calibrate another flow meter?
It can support field comparisons and verification checks. Formal calibration requires an appropriate reference and procedure.
Can it help identify a faulty inline flow meter?
It can help investigate discrepancies, but a difference between readings does not automatically mean the inline meter is faulty.
Does the pipeline need to be shut down?
Not normally for clamp-on sensor installation, provided the measurement location and operating conditions are suitable.
Post time: Oct-19-2026