When selecting a flow meter, many engineers ask whether a handheld ultrasonic flow meter can replace a traditional inline flow meter.
The answer depends on the application. A handheld ultrasonic flow meter, such as the Lanry TF1100-CH, is designed for portable, non-invasive flow measurement. An inline flow meter is generally selected for permanent installation and continuous monitoring.
What Is the Difference Between a Handheld and an Inline Flow Meter?
A handheld ultrasonic flow meter uses external clamp-on transducers to measure liquid flow through a suitable pipe. The sensors do not contact the liquid directly, and pipe cutting is generally unnecessary.
An inline flow meter is installed in the pipeline or its flow path. Depending on the technology, it may use electromagnetic, turbine, or other measurement principles.
The main differences are installation, portability, maintenance requirements, and intended use.
? When Is a Handheld Ultrasonic Flow Meter a Better Choice?
The TF1100-CH is useful when engineers need to:
- [✓] Measure flow at different locations.
- [✓] Check an existing flow meter.
- [✓] Perform temporary flow measurements.
- [✓] Inspect water supply and cooling water systems.
- [✓] Avoid pipeline modifications during measurement.
Its portable design is particularly useful for maintenance teams and field service engineers.
When Is an Inline Flow Meter More Suitable?
For continuous process monitoring, automatic control, or long-term flow data acquisition, a permanently installed flow meter may be more appropriate.
For example, a factory may use an inline flow meter to transmit flow signals to a PLC, while maintenance engineers use a handheld ultrasonic flow meter to compare readings or investigate unexpected flow changes.
A handheld meter should not automatically be considered a replacement for a permanent instrument when continuous monitoring or a specific control output is required.
Choose a handheld ultrasonic flow meter when:
Portability, flexible measurement locations, and non-invasive installation are important.
Choose an inline flow meter when:
The application requires permanent installation, continuous monitoring, or integration with an automated process.
Frequently Asked Questions
Can a handheld ultrasonic flow meter measure flow without stopping the process?
In suitable applications, yes. The clamp-on sensors can be installed externally while the pipeline remains in operation.
Can it measure flow continuously?
It can take measurements while operating, but it is primarily designed for portable field use rather than replacing every permanent monitoring system.
Is an inline flow meter always more accurate?
No. Accuracy depends on the measurement technology, installation, operating conditions, and instrument specifications.
The Lanry TF1100-CH handheld ultrasonic flow meter provides a practical solution for portable liquid flow measurement.
Contact Lanry Instruments to confirm whether a handheld or permanently installed flow meter is suitable for your application.
Post time: Oct-19-2026