Fuji Electric Portaflow-C FSC-4 Ultrasonic Flow Meter

Compact clamp-on transit-time portable for clean liquids — ±1.0% of rate class accuracy, ≤1 s response, detectors covering Ø13–6000 mm and −40 to +200 °C, with about 12 hours on the built-in battery.

Key advantages

Transit-time portable — 1-path clamp-on method for uniform liquids that pass ultrasound (water, distilled water, alcohols, and similar).
Pipe and temperature coverage — Inner diameter Ø13–6000 mm and fluid −40 to +200 °C depending on detector (FSSD / FSSC / FSSE / FSSH classes).
±1.0% of rate class — Fast response ≤1 s; improved anti-bubble DSP vs earlier Portaflow generations.
Field logging & PC link — SD card logging (option), USB to PC, color backlit LCD, 4–20 mA output, heat-quantity calculation from temperature inputs.
Battery shift work — Built-in rechargeable pack for about 12 hours continuous; IP64 enclosure while on battery.

Typical applications

Spot-check and commissioning of liquid lines without cutting pipe.
HVAC / chiller energy checks using consumed-heat calculation with temperature inputs.
Portable survey work across many pipe sizes with detector kits.
Temporary flow verification where a permanent meter is not yet installed.

Selection guide

Detector family — Match FSSD (small), FSSC (standard), FSSE (large), or FSSH (high-temp) to ID and fluid temperature.
Logging / printer — SD card option; optional graphic printer; optional flow-velocity-profile detector.
Software revision — Confirm FSC firmware/loader version for Windows 8.1/10 if updating older units.
Straight-run — OEM guidance typically 10D upstream / 5D downstream (JEMIS-032 reference).

Common mistakes

Using clamp-on transit-time on aerated, slurry, or non-uniform liquids that block ultrasound.
Picking a detector below the actual fluid temperature (high-temp needs FSSH class).
Expecting ±1.0% on every small-bore / low-velocity point — accuracy bands widen on Ø13–50 mm and low velocity per EDS6-153.
Skipping coupling/gel and mounting alignment — path geometry drives repeatability.

When to RFQ / what to tell us

Pipe ID/OD, material, lining, fluid, temperature, and typical velocity.
Detector kit preference; SD / printer / profile options.
Quantity and ship-to country.

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Specs

Spec	Value
SKU	46849
Brand	Fuji Electric
Model	Portaflow-C FSC-4 (transmitter type FSC)
Product type	Portable clamp-on transit-time ultrasonic flowmeter
Fluid	Uniform liquid that propagates ultrasound
Pipe inner diameter	Ø13–6000 mm (detector-dependent)
Fluid temperature	−40 to +200 °C (detector-dependent)
Velocity	0 to ±32 m/s (minimum ±0.3 m/s)
Accuracy	±1.0% of rate class (see EDS6-153 bands by ID/velocity)
Response / path	Output cycle 1 s; 1-path transit-time
Analog I/O	4–20 mA out (1); 4–20 mA / 1–5 V in (2) for heat calc etc.
Power	Built-in battery ≈12 h continuous; exclusive charger ≈3 h
Enclosure / size / weight	IP64; 210 × 120 × 65 mm; approx. 1 kg
Logging / PC	SD card option; USB serial to PC loader software

Documents

FAQ

Q: Is Portaflow-C clamp-on? A: Yes — transit-time detectors clamp to the pipe; no process penetration.

Q: How long does the battery last? A: OEM states about 12 hours continuous operation; recharge about 3 hours with the exclusive adapter.

Q: What should I send for a quote? A: Pipe size/material, fluid/temperature, detector preference, logging options, quantity, ship-to.