HNF100-C DIN-Rail Ultrasonic Flow Meter Module

HNF100-C DIN-Rail Ultrasonic Flow Meter Module

Compact DIN-rail module-type ultrasonic flow and heat meter converter for panel builders, OEM equipment and system integrators. It drives the same clamp-on or insertion transducers, measures transit-time flow and calculates heat with PT100 supply/return sensors; terminals cover analog inputs, relay, analog output, power and isolated RS485 for direct PLC/DCS/SCADA connection.

HNF100-C DIN-Rail Ultrasonic Flow Meter Module

The HNF100-C is a compact module-type ultrasonic flow and heat meter converter that clips onto a standard 35 mm DIN rail, built for panel builders, OEM equipment and system integrators. It drives the same clamp-on or insertion transducers as the wall-mounted version, measures transit-time flow, and calculates heat energy when PT100 temperature sensors are connected to the supply and return pipes. Wiring terminals cover temperature inputs, analog inputs, relay, analog output, power and isolated RS485, connecting directly to PLC, DCS or SCADA systems.

INQUIRY

OEM and Cabinet Integration

The ABS housing snaps onto the guide rail for batch installation in instrument boxes and distribution cabinets, with a four-button navigation menu. It suits embedded flow measurement in control cabinets, metering skids, heat-meter assemblies and remote monitoring panels, where a separate wall instrument is not wanted. No pressure loss and no pipe cutting for the clamp-on option.

Good fit: OEM equipment integration, control panel and cabinet builders, PLC/DCS/SCADA automation, heat-meter assembly and manufacturing, metering skids and packaged systems, district heating substations, energy management systems, remote monitoring and telemetry, water utilities, irrigation control, retrofit and converter replacement.

Working Principle

Upstream and downstream transducers exchange ultrasound alternately; the transit-time difference between the two directions is proportional to flow velocity, computed with 4-byte IEEE 754 floating-point arithmetic. Pipe dimensions, material, lining and fluid are configured through the menu; zero calibration, damping, low-flow cut-off, meter factor and 11+ segment linearisation are adjustable on site.

Technical Specifications

Model	HNF100-C — basic modular ultrasonic flow meter / heat meter converter
Principle	Ultrasonic transit-time; 4-byte IEEE 754 floating-point arithmetic
Accuracy	Flowrate ±1 % (flow velocity >0.2 m/s)
Pipe size	DN15–DN6000
Pipe material	Carbon steel, stainless, cast iron, copper, PVC, aluminum, FRP, etc.
Fluid	Single-phase homogeneous sound-conducting liquids: water, seawater, industrial wastewater, acid/alkali solutions, alcohol, beer, various oils
Medium temperature	−30…160 ℃
Flow velocity	0…±10 m/s; turbidity ≤10,000 ppm with low bubble content
Display	Dot-matrix backlight LCD, 6×12 Chinese or 6×24 Western characters; four-button navigation; five languages
Current output	One 4–20 mA channel, load 0–1 kΩ, accuracy 0.1 %
Pulse / OCT	One OCT pulse output, pulse width 6–1000 ms (default 200 ms), isolated
Relay	Channel 1 relay output; two flow alarms supported
Analog input	Three-channel 4–20 mA input, 0.1 % accuracy; temperature, pressure or level signals
Temperature input	Three-wire or four-wire PT100 for cold/heat measurement
Communication	Isolated RS485, MODBUS; GPRS wireless module available on request
Power	DC 8–36 V or AC 85–264 V (optional); dissipation 1.5 W
Protection	Main unit IP30; sensor up to IP68
Ambient	Main unit and sensor −20…60 ℃; main unit humidity 85 % RH
Transducer cable	Custom twisted-pair cable, up to 50 m; RS485 transmission over 1 km

Optional Flow Transducers

Code	Type	Model	Pipe size	Temperature
1	Standard clamp-on, small	S1	DN15–DN100	−30…90 ℃
2	Standard clamp-on, medium	M1	DN50–DN700	−30…90 ℃
3	Standard clamp-on, large	L1	DN300–DN6000	−30…90 ℃
4	High-temperature clamp-on, compact	S1-HT	DN15–DN100	−30…160 ℃
5	High-temperature clamp-on, medium	M1-HT	DN50–DN700	−30…160 ℃
6	High-temperature clamp-on, large	L1-HT	DN300–DN6000	−30…160 ℃
7	Standard insertion	ATC-1	DN15–DN100	−30…90 ℃
8	Extended insertion	ATC-1-L	DN50–DN300	−30…90 ℃
9	Parallel insertion	ATP-1-P	DN15–DN100	−30…90 ℃

Optional PT100 Temperature Sensors

Code	Type	Model	Pipe size	Installation
1	External clamp-on	AET-1	≥DN50	No shutdown
2	Small-bore insertion	SCT-1	≤DN40	Line shut down
3	Insertion	TCT-1	≥DN50	Line shut down
4	Pressure insertion	PCT-1	≥DN50	No shutdown

All PT100 sensors: −40…160 ℃, three-wire or four-wire available.

Ordering Code

Position	Meaning
HNF100-C	Basic modular ultrasonic flow meter
[Sensor 1–9]	Flow transducer code from the table above
[DN] * [Pipe material] [Nominal pressure MPa] [Cable length m ×2]	Bore, pipe material, pressure rating and cable length pair
[Temp sensor 1–4]	PT100 sensor code from the table above

Example: HNF100-C-2-5*2-200 — standard medium clamp-on sensor, 5 m cable pair, DN200.

Installation Notes

Mount the module on a standard 35 mm DIN rail inside the cabinet; terminals connect transducers, PT100, analog inputs, relay, analog output, power and RS485.
Straight run: 10D upstream, 5D downstream, 30D from a pump outlet or half-open valve.
Use the custom twisted-pair transducer cable, kept clear of power cables; max 50 m, RS485 over 1 km.
Clamp-on sensors are fixed with steel band or wire rope and couplant; UP/DN polarity must match upstream/downstream.

Data, Alarms and Batch Control

Built-in data logger stores flow, heat, pressure, level and temperature totals with timed output and history query; power-off records retained.
Two alarm channels; relay can drive an external alarm or beacon.
Built-in batch controller for preset-volume dosing; 11+ segment linearisation, meter factor, damping and low-flow cut-off.

Typical Applications

OEM and automation: control cabinets, switchgear, metering skids, packaged plants, PLC/DCS/SCADA integration.
Energy and water: heat-meter assemblies, district heating substations, water utilities, irrigation, energy monitoring and trade settlement.
Industries: water supply and drainage, metallurgy, petrochemical, hydraulic engineering, energy audit and remote telemetry.

What to Send Us for Selection

Send: pipe OD and wall thickness, material and lining, fluid and temperature, normal and maximum flow, transducer style, heat metering sensors, outputs, communication, supply and cable length. We will confirm the transducer model and ordering code before quoting.

Frequently Asked Questions

Does it mount on standard DIN rail?

Yes. The compact ABS housing clips onto a standard 35 mm DIN rail for batch mounting in instrument boxes and distribution cabinets; it is intended for embedded OEM integration rather than wall display.

Can the module calculate heat energy?

Yes. Connect three- or four-wire PT100 sensors to supply and return; the module computes cold and heat energy alongside flow, with heat units configurable in the menu.

Which transducers work with this compact converter?

The same S1/M1/L1 clamp-on and HT high-temperature pairs, plus ATC-1, ATC-1-L insertion and ATP-1-P parallel insertion sensors, covering DN15–DN6000.

How do RS485 and analogue outputs connect to control cabinets?

Terminals provide 4–20 mA analog output, OCT pulse, relay, three 4–20 mA analog inputs, PT100 inputs, power and isolated RS485 Modbus, wiring directly to PLC, DCS or SCADA.

What logging and batch functions are included?

The built-in logger keeps timed and historical records of flow, heat, pressure, level and temperature; two alarms and a batch controller handle preset-volume dosing, with 11+ segment linearisation.