Selecting a flow meter for pressure flow process measurement often comes down to choosing between two different tools rather than comparing similar hardware. An ultrasonic liquid flowmeter can move from line to line, while a turbine flow meter is built around a specific fixed connection. The hard part is deciding whether flexibility or permanence matters more in your process.
Quick Verdict
The $300 ultrasonic TDS-100H is the better choice when you need to measure different pipe sizes and capture readings on the move. The $320 Blancett B111-120 turbine flow meter is the better choice when you have a fixed process line and want a dedicated meter. The $20 price gap is small, so the deciding factor should be how your piping is set up.
Comparison Table
| What to Compare | Portable Ultrasonic TDS-100H | Blancett B111-120 Model 1100 |
|---|---|---|
| Listed Price | $300.00 | $320.00 |
| Meter Type | Ultrasonic liquid flowmeter | Turbine flow meter |
| Pipe Fit | DN50-700 pipeline | 2\" NPT female end connections |
| Measuring Range | ±32 m/s (±104 ft/s) fluid velocity | 40-400 GPM |
| Build | High-quality metal and plastic | 316L stainless steel body |
| Output | RS-232C communication interface | B111109 magnetic pickup with factory K-Factor label |
| Condition | New | New - Open box |
Where Each Product Wins
The ultrasonic model wins when your measurement needs change from job to job. Its portability lets you apply the same meter to different lines and take readings without committing the meter to one location.
The Blancett turbine model wins when the process line is permanent. It is the meter that can stay with a dedicated line, with a body and output designed for continuous service in a specific fixed setup.
Product Notes
Portable Ultrasonic Liquid Flowmeter TDS-100H
The Portable Ultrasonic Liquid Flowmeter TDS-100H is the flexible problem solver. It is a non-contact ultrasonic meter, which makes it a practical option when you want to test a line without putting inline hardware into the process. The housing is high-quality metal and plastic, and the 4x16 display gives you a readable field interface.
The main limitation is that it is an electronic field instrument, not a permanent stainless steel line meter. If your application is an aggressive, fixed process line, the metal-and-plastic construction is not as reassuring as an all-stainless body. Use it where portability and storage of readings matter more than a hard-piped installation.
Blancett B111-120 Model 1100 Turbine Flow Meter
The Blancett B111-120 Model 1100 is the meter to choose when you know the exact line you are equipping. It is a turbine flow meter with a 316L stainless steel body, so it is built for corrosive and abrasive service. The B111109 magnetic pickup and the factory K-Factor label give you a defined relationship between the meter and the flow reading.
The trade-off is the purchase condition: the meter is New - Open box and sold as-is with no returns. That makes it a smart fit for a buyer who has matching pipework and can accept surplus condition, but it is not a flexible portable tool for a range of line sizes.
Final Choice by Use Case
Pick the Portable Ultrasonic Liquid Flowmeter TDS-100H when the job calls for a meter you can move between different lines and read on the spot.
Pick the Blancett B111-120 Model 1100 Turbine Flow Meter when you want a permanent meter for a defined process line.
