F148 Ultrasonic Flowmeter
Loss Free Inline Ultrasonic Flowmeter
Applications and measurement
Inline water-flow measurement in PVC pipe, with published sizes DN15–DN40 and size-specific ranges from 0.06–3.8 to 0.45–27.0m³/h.
The all-in-one design is presented for chemical-industry environments and continuous online service. The water specification does not establish compatibility with other chemical liquids.
About F148
Compact ultrasonic flowmeter designed for sustained performance in industrial environments. The manufacturer describes acid and erosion resistance; the specified measuring medium is water.
- All-in-one construction with no wear-and-tear parts, intended for permanent online operation.
- Standalone LCD flow display, RS485 output and optional 4–20mA flow-rate signal.
- Connect the pipe and power; normally no adjustments, specialist skills or tools are required. The brochure describes dry servicing and reduced downtime.
Application and Installation Guidance
Installation
Keep the pipe interior clean, tighten the threaded nuts at both ends and align the marked flow direction with the pipe flow. Wire with power off.
Measurement location
Use a fully developed flow profile in a full horizontal pipe or upward-flowing vertical pipe. The manual gives a general 10D upstream / 5D downstream guide; use the larger lengths shown for specific disturbances below.
Keep within transducer temperature limits, avoid excessive internal corrosion or scaling, and choose sound-conducting pipe.
Technical Data, Dimensions and Wiring
Performance specifications
- Accuracy
- Brochure: ±1.5% FS. Instruction manual: ±1.0%. Confirm the applicable specification.
- Repeatability
- 0.3%
- Measuring medium
- Water
- Pipe material
- Brochure: PVC. Manual: PVC-U/white.
- Protection
- IP54
Function specifications
- Power supply
- 10–36VDC, maximum 500mA
- Temperature
- Transmitter: 0–50°C. Transducer: 0–50°C.
- Humidity
- Up to 99% RH, non-condensing
- Outputs
- RS485; optional 4–20mA flow-rate signal.
- Display
- LCD
Physical specifications
- Transmitter material
- Brochure: POM. Manual: PVC-U/white.
- Power cable
- 3.0m standard
- Weight
- Brochure: 0.5kg. Manual: 0.5–0.8kg.
Published standards and certifications
- Immunity and radiation
- EN61326
- Quality management
- ISO9001 approved (manufacturer statement)
- CE
- CE certification stated in the source.
Wiring
- Power + / −
- Brown/Orange / Black (10–36VDC)
- RS485 A / B
- Green/Blue / White
- 4–20mA + / −
- Red / Yellow
Dimensions — L, W and H
Installation
Standard Sizes, Flow Ranges and Dimensions
| Size | L — mm | W — mm | H — mm | Flow range — m³/h |
|---|---|---|---|---|
| DN15 | 160 | 65 | 68 | 0.06–3.8 |
| DN20 | 165 | 65 | 75 | 0.11–6.8 |
| DN25 | 170 | 65 | 82 | 0.18–10.6 |
| DN32 | 175 | 65 | 90 | 0.29–17.4 |
| DN40 | 180 | 65 | 99 | 0.45–27.0 |
Installation Site Selection
Minimum straight lengths (upstream / downstream): bend 10D / 5D; tee 50D / 10D; diffuser 30D / 5D; reducer 10D / 5D; valve 30D / 10D; pump 50D after the pump. Additional bends and branch lengths are shown in the original diagram.
Display and Menu Settings
The factory software version displays for 25 seconds at startup. The display shows measurement data, errors, flow direction, signal strength and units.
Normally the meter operates with factory settings. Resetting requires specified software or a setting device; consult the manufacturer. The manual also describes keypad access to units, inner diameter and address. The original menu diagram preserves short/long press sequences.
Communication Protocols
MODBUS-I: default slave address 88 and baud rate 9600bps. Function 0x03 reads registers; 0x06 writes a single register. The full published address tables are retained below.
FUJI: normally 9600bps, 8 data bits, one start bit, one stop bit, no parity. The original command table and calibration conditions are retained below.
Select your F148 meter
Select the published meter size and required output for your enquiry.