Choosing a flow meter for pressure flow process measurement usually means balancing accuracy, portability, and the hassle of cutting into pipes. The Portable Ultrasonic Liquid Flowmeter TDS-100H DN50-700 Flow Meter M2 US is a portable ultrasonic unit designed for pipes in the DN50 to DN700 range, and it comes in at $300. Here's how it stacks up for real-world field use.
Quick Verdict
The TDS-100H earns its keep as a non-contact flow meter with a measurement accuracy of ±1% and a velocity range of ±32 m/s (±104 ft/s). For a portable unit, those specs are solid. The biggest drawback is the RS-232C interface, which means wired data transfer rather than wireless. If you can live with that, it's a capable field instrument.
Product at a Glance
TDS-100H Portable Ultrasonic Liquid Flowmeter
This meter uses non-contact ultrasonic measurement, so you can take readings without breaking into the line. The metal and plastic housing is built to resist deformation in field conditions. It also has a data logger with 24k bytes of storage, good for up to 10,000 lines of data. On the downside, the display is a 4x16 character panel that only shows English letters.
Who It Suits
This flowmeter suits technicians and engineers who need to take measurements at different points on liquid lines. It's handy when you want to verify flow without permanently installing a meter, and you can carry it from one test point to another. If you work in plants with multiple pipelines, this type of tool can save you from repeated installations.
What Stands Out From the Listed Details
The measurement specs are the real story. With ±1% accuracy and a velocity range up to ±32 m/s, the meter covers both low and high flow situations. That's a practical advantage when you're dealing with variable process conditions. The robust metal and plastic construction also gives it a field-ready feel.
Meaningful Trade-Offs
The RS-232C port is the main limitation; modern users may expect USB or Bluetooth. The simple display is another consideration-it's functional for readings but not for graphs or menus. Since the unit works with the transducers it comes with, you're limited to the pipe sizes those probes handle. Weigh these against the portability and accuracy.
Bottom Line
For portable liquid flow measurement in the DN50-700 range, the TDS-100H offers a strong balance of accuracy, durability, and data logging at $300. Just factor in the wired interface and basic display. If those are acceptable, this meter is a sensible choice for field diagnostics and routine checks.
