Guiyang.bai@honno-auto. com
86-13840589744
This External Clamp-On Ultrasonic Flow Meter turns flow measurement into a 60-second job. Its magnetic auto-lock clamp with anti-loosening screws lets one person mount the upper/lower cards and host onto the pipe in about 60 seconds with one hand – no pipe modification, no production stop, no pressure loss, no moving parts. The clamp accepts a very wide spread of metal and plastic pipes, from 9.53 mm to 110 mm outer diameter (DN6–DN100). Setup is fully menu-driven with a drop-down list and 4 touch buttons, so there are no menu codes to memorize. The 1.3-inch 4-line OLED display (128×64, rotatable forwards/backwards) shows date, signal strength, instantaneous flow and cumulative totals at the same time and stays readable in dim environments. Metric and imperial units are selectable (m³/h, LPM, GPM, LPH) with daily/monthly/yearly totalizers and a 7-digit accumulator backed by 10-year memory. Flow range 0.1–5.0 m/s, accuracy ±2.0% (0.3–5.0 m/s), repeatability 0.8%, response time 500 ms. Suitable for water, solutions and chemical reagents (impurities ≤ 4%, viscosity < 300 cSt). Outputs: 4–20 mA (max load 600 Ω), RS-485 Modbus RTU, optional OCT upper/lower-limit alarm and pulse output, optional relay (30 VDC @ 1 A). 24 VDC @ 3 W; IP54/IP65; cable 2 m, extendable to 20 m.
The HNF00-C is a compact integrated clamp-on ultrasonic flow meter based on transit-time technology. Upper and lower clamps contain built-in magnets that auto-lock together; with anti-loosening screws, a single person can mount both clamps and the host onto the pipe in about 60 seconds with one hand – no pipe modification, no production stop, no pressure loss, no moving parts.
The same unit measures metal pipes (stainless steel, carbon steel, copper) and plastic pipes (PVC/CPVC, PPR, PVDF, PPH, HDPE, PDA/PU) through a menu selection, covering DN6–DN100 (about 9.53–110 mm OD). The 1.3-inch 128×64 OLED is rotatable forwards/backwards and shows date, signal strength, instantaneous flow and totalised volume at a glance; four touch buttons drive a drop-down menu – no menu codes to memorise.
Size: DN6 – DN100 Flow range: 0.01 – 130 m³/h Accuracy: ±2% (0.3–5.0 m/s) Outputs: 4-20mA / RS485 Modbus / PNP-NPN Power: 24VDC · CE / SIL IEC 61508
Applications: cleaning equipment & flat glass washing, semiconductor water & chemical lines, pharmaceutical batching & proportioning, beverage & food processing, water treatment & ultrapure water, printing & dyeing, fine chemicals & solvents transfer, dosing systems, industrial circulating water, plant utility flow monitoring.
Select this model when all of the following conditions are met:
The pipe nominal size is between DN6 and DN100 (about 9.53–110 mm OD).
The pipe is acoustically conductive: metal (stainless steel, carbon steel, copper) or plastic (PVC/CPVC, PPR, PVDF, PPH, HDPE, PDA/PU).
The medium is a clean single liquid: water (tap/ultra-pure), acid/alkali solutions, organic liquids, chemical reagents, alcohol, beverage water, etc.
Suspended impurities ≤ 4%, viscosity < 300 cSt; flow is stable and does not generate excessive bubbles or cavitation.
Liquid temperature −10 to 50 °C; ambient temperature 10–50 °C.
You need to clamp on a running pipe without stopping production, and output 4–20 mA / RS485 signals.
Please consult us first if: pipe OD exceeds 110 mm, liquid temperature exceeds 50 °C, impurities are high or viscosity exceeds 300 cSt, the inner wall is heavily corroded/scaled, or explosion protection is required.
Built-in magnets snap the upper and lower clamps together; four anti-loosening screws fix the clamps and two screws fix the host. After cleaning the pipe surface, one person completes the whole installation with one hand – power on and it measures.
Select the pipe material in the menu and the same meter measures metal pipes (stainless steel, carbon steel, copper) or plastic pipes (PVC, PPR, PVDF, PPH, HDPE) – fewer spares on site.
The 1.3-inch 128×64 OLED rotates forwards/backwards and shows date, signal strength, instantaneous flow and cumulative total simultaneously. Four touch buttons with a drop-down menu – no codes to remember; metric/imperial units and year/month/day totals backed by 10-year non-volatile memory.
Velocity range 0.1–5.0 m/s with ±2% accuracy (0.3–5.0 m/s band), 0.8% repeatability and 500 ms response. CE and SIL certified to IEC 61508 / IEC 61511, suitable for safety-related applications defined by the standards.
| Model | HNF00-C Clamp-On Ultrasonic Flow Meter (integrated / remote version) |
|---|---|
| Principle | Ultrasonic transit-time, non-invasive clamp-on measurement |
| Nominal size range | DN6, DN8, DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100 (about 9.53–110 mm OD) |
| Flow range | 0.01 – 130 m³/h (velocity 0.1–5.0 m/s) |
| Max error | ±2% (in 0.3–5.0 m/s band); repeatability 0.8%; response 500 ms |
| Wetted parts | None (clamp-on installation) |
| Connection | Clamp-on |
| Pipe materials | Metal: stainless steel, carbon steel, copper; plastic: PVC/CPVC, PPR, PVDF, PPH, HDPE, PDA/PU |
| Measured liquids | Water (tap/pure/ultra-pure), acid & alkali solutions, organic liquids, chemical reagents, alcohol, beverage water, etc.; impurities ≤ 4%, viscosity < 300 cSt |
| Liquid temperature | −10 … 50 °C |
| Ambient temperature | 10 … 50 °C |
| Transmitter housing | Aluminium alloy |
| Display & operation | 1.3" 128×64 OLED, rotatable, 4-button drop-down menu; date/signal/instantaneous/total on four lines |
| Inputs | Analogue input, digital input |
| Outputs | 4–20 mA (max load 600 Ω), RS-485 Modbus RTU; optional OCT upper/lower-larm & pulse, relay (30 VDC @ 1 A); selectable 0-20 mA, 0-24 mA, PNP, NPN, custom |
| Power | 24 VDC, approx. 3 W |
| Protection | IP54 / IP65 |
| Cable | 2 m standard, extendable up to 20 m (remote version) |
| Safety | CE; SIL per IEC 61508 / IEC 61511 |
| Code | Item | Description |
|---|---|---|
| Y / F | Type | Y = integrated; F = remote (split) |
| 006 – 100 | Size | 006=DN6, 008=DN8, 010=DN10, 015=DN15, 020=DN20, 025=DN25, 032=DN32, 040=DN40, 050=DN50, 065=DN65, 080=DN80, 100=DN100 |
| H / H1 / H2 | Current output | H=4-20mA; H1=0-20mA; H2=0-24mA |
| R | Communication | RS485 Modbus RTU |
| P / N | Digital output | P=PNP; N=NPN |
| X | Custom | Custom output or range per customer requirement |
Standard 5-step install:
Clean the pipe: choose a straight, always-full section (vertical upward or horizontal flow); remove dirt, paint and debris.
Mount upper/lower clamps: slide lower-clamp studs into upper clamp – magnets auto-snap; tighten four anti-loosening screws.
Mount the host: remove the protective film from the transducer, seat it in the upper clamp and tighten two screws.
Wire: connect the output cable plug; run the other end to 24 VDC supply.
Run: power on and watch signal strength (SQ) – once it stabilises above threshold, measurement is stable; set pipe size and medium in the menu to start totalising.
Mounting notes: pipe surface temperature must stay within the sensor range; prefer sections without heavy corrosion or scaling inside; ensure stable flow pressure without excessive bubbles or cavitation.
4–20 mA current: max load 600 Ω, direct to PLC/DCS analogue inputs.
RS-485 Modbus RTU: bus-ready for SCADA and remote monitoring.
OCT / relay (optional): upper/lower-limit alarm and pulse totalisation; relay contact 30 VDC @ 1 A.
PNP / NPN digital output: selectable by model, direct to PLC digital channels.
Inputs: analogue and digital inputs for external zero calibration, batch reset and interlock triggering.
Totals keep 10-year non-volatile memory; year/month/day totals and a 7-digit grand totaliser; metric/imperial units (m³/h, LPM, GPM, LPH) selectable.
First adopted widely in cleaning-equipment lines – clamp-on installation keeps washing circuits running while monitoring water, pure water and chemical flow.
Used on ultra-pure water, CMP chemicals and acid/alkali transfer lines in fabs – no wetted contamination, no cut-in retrofits.
Monitors solution and solvent flow in batching systems; 4–20 mA and Modbus feed the batching controller directly with batch totalisation.
Measures beverage water, alcohol, liquor, sodium carbonate, dilute sulphuric acid, hydrocarbon solvents, triethanolamine, ethylenediamine, propylene oxide and similar media for process control.
Industrial circulating water, dosing systems, dyeing water, wastewater treatment and plant-wide utility water/solvent mains; remote-version cable extends up to 20 m.
To confirm the correct HNF00-C configuration, please provide: pipe material and OD (DN or imperial size), medium name and temperature, normal and maximum flow, required output (4-20mA / RS485 / PNP / NPN / relay), integrated or remote version, supply voltage and site environment. If necessary we will request additional details on inner-wall condition, liner material and available straight-run length.
About 60 seconds. After cleaning the pipe, upper and lower clamps snap together via magnets; four anti-loosening screws fix the clamps and two screws fix the host – one person, one hand, no shutdown.
DN6–DN100 (about 9.53–110 mm OD); metals include stainless steel, carbon steel and copper; plastics include PVC/CPVC, PPR, PVDF, PPH, HDPE and PDA/PU, selectable in the menu.
Yes. The 1.3-inch OLED shows date, signal strength, instantaneous flow and cumulative total on four lines at once, rotatable forwards/backwards and readable in dim environments.
Use a clean single liquid with suspended impurities ≤ 4% and viscosity < 300 cSt; flow must be stable without excessive bubbles/cavitation, and liquid temperature −10 to 50 °C.
Yes. Totals keep 10-year non-volatile memory with year/month/day and a 7-digit grand totaliser; metering resumes automatically after power is restored.
HNF00-C Clamp-On Ultrasonic Flow Meter Datasheet (PDF)
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Send us pipe material & OD, medium name & temperature, flow range and output type, and we will confirm whether HNF00-C is suitable and recommend integrated/remote version and output configuration before quotation.
Submit your application details »Contact: HongNuo
Phone: 13840589744
Tel: 86-13840589744
Email: Guiyang.bai@honno-auto. com
Add: Zhongguancun Innovation Center, No. 28 Huahai Road, Shenyang Economic and Technological Development Zone, Liaoning Province
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