Choosing a flow meter for pressure flow process measurement often comes down to two very different approaches: clamp-on ultrasonic versus inline turbine. If you can attach sensors around a pipe, a wall-mounted ultrasonic unit with multiple transducers covers a wide range of pipe sizes. If you need a fixed inline meter with NPT connections, a turbine meter is a rugged choice. This head-to-head compares the Wall Mounted Digital Ultrasonic Flowmeter (TUF-2000B) with the Blancett B111-120 Model 1100 Turbine Flow Meter to help you decide.
Quick verdict
Pick the ultrasonic flowmeter if you need a lower-priced, non-invasive clamp-on unit that works on multiple pipe diameters and offers RS485/Modbus communication. Pick the Blancett turbine meter if you need an inline 2" NPT stainless steel meter rated for 40-400 GPM in oil/gas, produced water, and industrial process service.
Comparison
| Feature | Wall Mounted Digital Ultrasonic Flowmeter | Blancett B111-120 Model 1100 Turbine Flow Meter |
|---|---|---|
| Price | USD 240.01 | USD 320.00 |
| Flow meter type | Ultrasonic flow meter | Turbine flow meter |
| Installation | Clamp-on transducers (TS-2 for 0.78-3.94 in, TM-1 for 1.97-27.56 in) | Inline 2" NPT female connections |
| Body / materials | ABS, steel | 316L stainless steel |
| Output | RS485, supports MODBUS | B111109 magnetic pickup |
| Condition | New | New - Open box |
Where each wins
The ultrasonic flowmeter wins if you value installation flexibility: clamp-on transducers cover roughly 0.78-27.56 in pipe diameters, and the wall/rail-mounted host adds an LCD readout plus RS485/Modbus output. It is suited to water supply and heating lines where you can strap the sensors to the outside of the pipe.
The Blancett turbine wins if you want a fixed inline meter with 2" NPT connections, 316L stainless steel construction, and a 40-400 GPM rating. Its magnetic pickup and K-Factor calibration fit oil/gas, produced water, and industrial process applications.
Product notes
Wall Mounted Digital Ultrasonic Flowmeter Water Flow Meter & TM-1 TS-2 TUF-2000B
At USD 240.01, this is the lower-priced of the two and the more flexible setup. The package includes the TUF-2000B host, two steel belts, both a TS-2 transducer for 0.78-3.94 in pipes and a TM-1 transducer for 1.97-27.56 in pipes, a 32.81 ft signal cable, and a connection terminal set. The wall- and rail-mountable host shows current and accumulated flow or heat on an LCD, and the RS485/Modbus interface makes it easy to pull data into a monitoring setup. If you work with pipes of varying sizes or need to avoid cutting into a line, this clamp-on ultrasonic meter is a strong fit. The trade-off: its clamp-on design means it cannot be used as an inline meter.
Blancett B111-120 Model 1100 Turbine Flow Meter 2" NPT 40-400 GPM 316SS NEW
This inline turbine meter is built around a 316L stainless steel body and comes with 2" NPT female connections, so it can be installed directly into a pipe. It is rated for 40-400 GPM and uses a B111109 magnetic pickup, and the listing includes its factory K-Factor calibration label (K-Factor 48.612). That makes it a practical choice for oil and gas, produced or injection water, water flood, and other industrial process flow measurement where repeatable readings and rugged construction matter. At USD 320.00, it costs more than the ultrasonic unit, and the condition is listed as New - Open box. It is also offered as-is surplus with no returns, so confirm the meter meets your mounting and service requirements before ordering.
Final choice by use case
Pick the ultrasonic flow meter when you need a lower-priced, flexible clamp-on meter for water flow and heat measurement, especially on lines from under 1 inch up to about 28 inches in diameter, and when you want data communication via RS485/Modbus. Pick the Blancett turbine when your installation is a 2" NPT line, your expected flow is in the 40-400 GPM range, and you want a stainless steel inline meter for oil/gas or process water service.
