A portable transit-time clamp-on flow meter for water, corrosive chemicals, fuels and oils, with a built-in data logger and an optional BTU energy kit. Ready to measure in five minutes.
SKU SZ00U30020 · FROM $9,999
You run flow surveys, energy audits or meter verifications and the data has to hold up afterwards.
Ultraflux built this instrument around a specific person: the engineer who arrives at a plant, gets a number off a pipe, and then has to defend that number to someone who did not watch him take it. Everything about it follows from that.
The multi-parameter data logger is the headline. You are not writing a flow rate on a clipboard; you are logging flow, velocity, signal quality and gain over time, and exporting it. When someone asks six months later whether the reading was trustworthy, the diagnostic record answers.
Flow profile changes with Reynolds number. Laminar, transitional and fully turbulent flow have genuinely different velocity distributions across the pipe. An ultrasonic meter measures velocity along an acoustic path and infers the mean. If it assumes the wrong profile it applies the wrong correction factor and hands you a wrong number with total confidence. Automatic Reynolds detection is the instrument noticing which regime it is actually in.
Ultraflux publishes 1–2% typical, improving to 0.5% with field calibration. Both are true and the gap between them is the whole story of clamp-on measurement.
Accuracy is dominated by site conditions, not electronics. Pipe quality, internal scale, rust build-up, straight-run compliance and turbulence all disturb the flow profile, and therefore the relationship between velocity on the acoustic path and mean velocity in the pipe. The instrument is not guessing — it reports exactly what it sees on its path. If the path is not representative, the number is not representative. This is why we spend more time on where to put the transducers than on which instrument to buy.
With temperature inputs on supply and return, the UF801-P becomes a portable BTU meter. An energy audit goes from a two-instrument job to a one-instrument job: flow and delta-T from the same box, thermal energy calculated on board. For HVAC and district energy work that is the difference between a tool you carry and a cart you push.
| Technology | Ultrasonic transit-time, clamp-on (non-invasive) |
|---|---|
| Pipe size range | 0.5 in to 390 in (plastic or metal pipe) |
| Fluids | Clean liquids with minor aeration (<5%): water, wastewater, corrosive chemicals, fuels, oils |
| Accuracy | Typically 1–2%; up to 0.5% with field calibration |
| Velocity sensitivity | Detects velocities as low as ±0.03 ft/s |
| Signal processing | DSP (Digital Signal Processing) processor |
| Flow profile handling | Automatic Reynolds number detection for turbulent conditions |
| Data logging | Built-in multi-parameter data logger |
| Energy / BTU | Optional energy kit — BTU, kilowatts, thermal energy audit |
| Battery life | Up to two months using sleep function |
| Display | Graphic screen with diagnostic functions |
| Setup time | Approximately 5 minutes |
| Straight run required | 10 pipe diameters upstream, 5 downstream |
| Price | From $9,999 |
Specifications transcribed from the manufacturer datasheet and subject to change. Confirm against the controlling document before specifying — Seztec will send it to you on request.
This instrument is specified into the following industries. Each page covers the specific measurement problems, the fluids involved, and what usually goes wrong.
Send us pipe size, pipe material, wall thickness, lining, fluid, and how much straight run you have. A Seztec application engineer will confirm the fit — or tell you it is the wrong instrument, which happens and which we would rather say before you buy.
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