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Brand: Tokyo Keiso
Tokyo Keiso SONICMAX UL6300 V2 Clamp-On Ultrasonic Flowmeter
Description
Clamp-on ultrasonic flowmeter with two-line measurement and HART 7
The Tokyo Keiso SONICMAX UL6300 V2 pairs the UFC300 V2 converter with the UFS6000 V2 clamp-on sensor and uses the time-of-flight principle. Three sensor sizes cover pipes from 15 mm to 4000 mm without touching the fluid, which suits pure water and chemical lines where particles or metal ions must not enter the process.
A stainless-steel sensor rail with an integrated sensor cable makes mounting simpler and the assembly more weather-resistant than earlier Tokyo Keiso designs. The converter works with several sensors and can measure two lines at once, which allows uneven flow in a single stream to be averaged by measuring two paths. Digital signal processing supports low-velocity measurement, and the display offers a bar graph, multi-line readout and a real-time trend screen.
Technical specifications
Data from Tokyo Keiso technical guidance TG-F2072-E03 (4th edition, July 2024).
| Parameter | Specification |
|---|---|
| Manufacturer / model | Tokyo Keiso SONICMAX UL6300 V2 (converter UFC300 V2, sensor UFS6000 V2) |
| Measuring method | Ultrasonic time-of-flight, clamp-on; V path (small and medium sensors), V and Z path (large sensor) |
| Pipe size by sensor | Small 15 to 40 mm; medium 50 to 300 mm; large 200 to 4000 mm (catalogue marks the large sensor as in preparation) |
| Fluid temperature (pipe surface) | -40 to +120 °C standard; -40 to +200 °C XT version |
| Measuring range | Velocity min 0 to 0.5 m/s, max 0 to 20 m/s; flow 0.319 m3/h (15 mm) to 904,778 m3/h (4000 mm) |
| Accuracy | Pipe 50 mm and up: 1% of reading at 0.5 m/s or more, 0.005 m/s below; under 50 mm: 3% of reading at 0.5 m/s or more, 0.015 m/s below |
| Sensor | IP66/67; stainless-steel rail and band; ambient -40 to +70 °C; 10 m coaxial cable with SMB connector |
| Converter versions | UFC300W V2 wall type (IP65/66, polyamide resin); UFC300F V2 field type (IP66/67, aluminium alloy) |
| Converter ambient | -40 to +65 °C operation |
| Power supply | 100 to 230 V AC (85 to 250 V), 48 to 63 Hz, about 22 VA; or 24 V DC (9 to 31 V), about 12 W |
| Display | Blue dot-matrix LCD, 128 x 64 pixels, backlit |
| Outputs | 4-20 mA DC (to 22 mA); pulse to 10 kHz; status output; control input; HART 7 standard |
| Explosion-proof option | UFS6000 V2/(XT)-Ex with UFC300F V2-Ex; ATEX and IECEx marking Ex db [ia] IIC T6 Gb on the converter, Ex ia IIC T6/T5/T4 Gb on the sensor |
Selecting the sensor and mounting
Sensor choice follows pipe material, nominal size and wall: the catalogue gives selection tables for metallic pipe (stainless steel up to Sch 20 or Sch 40, carbon steel), lined pipe (polyethylene or PVC lined steel) and plastic pipe (PVC, polyethylene, polypropylene, PVDF). Some combinations are marked not applicable, for example small-bore PVC-lined steel, where the gap between lining and steel scatters the signal. Rust inside carbon steel pipe and the zinc layer of SGPW galvanised pipe can make measurement difficult.
For pipe above 2000 mm and for some large-sensor cases the catalogue recommends a trial with a demonstration unit. A connection box and extension cable are added when the sensor cable has to be lengthened.
Functions that matter in service
Standard functions include free measuring units, automatic zero adjustment, bidirectional measurement with a direction signal, self-diagnosis, parameter retention for more than ten years, simulation of current, pulse and status outputs, and infrared touch sensors that allow setting without removing the cover. The converter can also be set with buttons once the cover is open.
How the Tokyo Keiso UL6300 V2 works
Two clamp-on sensors sit on the outside of the pipe. One sends an ultrasonic pulse through the pipe wall and the liquid. The pulse reaches the other sensor faster with the flow than against it. The converter turns that time difference into a flow rate.
Where the UL6300 V2 is used
- Pure water lines
- Chemical lines
- Large water mains
- Temporary flow checks
- Existing pipes without a cut-in
Selection checklist for the UL6300 V2
- Pipe outside diameter
- Pipe wall material
- Sensor size
- Fluid temperature
- Single or two-line measurement
- Converter housing type
- Power supply
- Output signals
Installation, commissioning and maintenance notes for the UL6300 V2
Clean the pipe surface at the sensor positions. Fit the sensor rail with the sensors on the pipe. Enter the pipe data in the converter. Check the signal strength on the display. Inspect the cable and the rail at regular intervals.
Requesting a quotation for the Tokyo Keiso UL6300 V2
Please send the pipe size, the pipe material and the liquid. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.
UL6300 V2 meter type
It is a clamp-on ultrasonic flowmeter.
UL6300 V2 converter
The converter is the UFC300 V2.
UL6300 V2 sensor
The sensor is the UFS6000 V2.
UL6300 V2 principle
It uses the time-of-flight principle.
UL6300 V2 fluid contact
It does not touch the fluid.
UL6300 V2 pipe sizes
Three sensor sizes cover 15 mm to 4000 mm pipes.
UL6300 V2 small sensor
The small sensor covers 15 to 40 mm.
UL6300 V2 medium sensor
The medium sensor covers 50 to 300 mm.
UL6300 V2 large sensor
The large sensor covers 200 to 4000 mm.
UL6300 V2 two-line measurement
The converter can measure two lines at once.
UL6300 V2 sensor rail
The sensor rail is stainless steel with an integrated cable.
UL6300 V2 low velocity
Digital signal processing supports low-velocity measurement.
UL6300 V2 velocity range
The maximum velocity range is 0 to 20 m/s.
UL6300 V2 fluid temperature
The standard range is minus 40 to plus 120 degrees C.
UL6300 V2 XT version
The XT version reaches plus 200 degrees C.
UL6300 V2 sensor housing
The sensor is rated IP66/67.
UL6300 V2 sensor cable
The sensor has a 10 m coaxial cable.
UL6300 V2 wall converter
The UFC300W V2 is a wall type in polyamide resin.
UL6300 V2 field converter
The UFC300F V2 is a field type in aluminium alloy.
UL6300 V2 power supply
Supply is 100 to 230 V AC or 24 V DC.
UL6300 V2 display
It has a backlit dot-matrix LCD.
UL6300 V2 display modes
The display shows a bar graph, multi-line values and a real-time trend.
UL6300 V2 current output
The current output is 4-20 mA DC.
UL6300 V2 pulse output
The pulse output reaches 10 kHz.
UL6300 V2 HART
It supports HART 7 as standard.
Meter records for the UL6300 V2
Record the pipe data, the sensor spacing and the signal strength.
Choosing the right UL6300 V2 sensor size
Choose the sensor size from the pipe outside diameter.
Documents and quotation
The Tokyo Keiso UL6300 V2 catalogue is attached to this page as a PDF with the sensor selection charts and model code. Please give us the pipe material, outside diameter, wall thickness, liquid, temperature and hazardous-area requirement so we can quote the right sensor size. Seven Star LLC is an independent supplier in Muscat; price and lead time are confirmed per enquiry. Related range: flowmeters and the pFlow D118i universal ultrasonic flowmeter.
Datasheets & Documents
- Catalog Tokyo Keiso SONICMAX UL6300 V2 Ultrasonic Clamp-on Flowmeter catalogue (TG-F2072-E03, 4th edition Jul 2024) Download
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About brand
Tokyo Keiso is a Japanese manufacturer of flow and level instruments, founded in Tokyo in 1954 as Japan's first maker of variable-area flowmeters. It now builds ultrasonic, Coriolis, electromagnetic and variable-area flowmeters plus level gauges, and set up a production subsidiary in Korea in 2012 for non-contact ultrasonic flowmeters.
Seven Star LLC is an independent supplier in Muscat. We list Tokyo Keiso models from the maker's published technical documents for water, oil and gas, power and chemical plants in Oman and the GCC.
Tokyo Keiso company profile
| Founded | 1954, Tokyo, Japan |
|---|---|
| First products | Variable-area flowmeters, a first for a Japanese manufacturer |
| Headquarters | Tokyo, Japan |
| Leadership | Ryoichi Sugi, President |
| Product families | SONICMAX inline and clamp-on ultrasonic flowmeters (UL3400, UL6300, UL350), MASSMAX Coriolis mass flowmeters, electromagnetic and variable-area flowmeters, float and magnetic level gauges |
Milestones
- 1954: Tokyo Keiso is founded as Japan's first variable-area flowmeter maker.
- 2012: TK Flow Engineering is set up in Korea for ultrasonic flowmeter production.
Tokyo Keiso product series
Ultrasonic flowmeters include the UL350 and SONICMAX UL6300 V2 clamp-on meters and the SONICMAX UL3400 three-beam inline meter. Other flowmeters include the MASSMAX 2400R Coriolis mass flowmeter, the VFM4200 SWIRLMAX vortex meter, the MAGMAX EGM2100C compact electromagnetic flowmeter, the TH series thermal gas flowmeters and the VC series V-Cone differential pressure flowmeter.
Level instruments include the TLR7500 80 GHz microwave level meter, the TGF7200 guided radar, the FM4000 MAG GAUGE magnetic metal tube level gauge and the FW-9000NN servo balance tank gauge for storage tanks.
Where Tokyo Keiso instruments are used
Water and wastewater networks, chemical and petrochemical plants, oil and gas facilities, power stations and tank terminals, with outputs such as 4-20 mA, pulse and digital communication for connection to control systems.
Tokyo Keiso products we list
Ordering Tokyo Keiso instruments: what we need
Send the fluid, line size, flow or level range, pressure and temperature, process connection and materials, output signals and any hazardous-area option. Where a catalogue is older or an option is still in preparation, we say so on the product page.
Facts checked against Tokyo Keiso company profiles and a 2022 interview with its president, October 2026.
Browse Tokyo Keiso products by category: Flowmeters, Level Instrumentation.
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Frequently Asked Questions
What pipe sizes does the UL6300 V2 cover?
15 mm to 4000 mm using three sensor sizes. The catalogue marks the large sensor as in preparation.
Can it measure two pipes?
The converter can measure two lines at once, and two-line measurement can also be used to average uneven flow in one pipe.
What is the accuracy?
1% of reading on pipes of 50 mm and larger at 0.5 m/s or more; 3% on pipes under 50 mm.
Does it support HART?
Yes, HART 7 is listed as a standard function.
What fluid temperature is allowed?
Pipe surface temperature of -40 to +120 °C, or up to +200 °C with the XT version.
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