Fuji Electric FSV Ultrasonic Flow Meter

Transit time, clamp-on flow meter for noninvasive liquid flow measurement.

  • 0 to ±105ft/s (0 to ±32m/s) flow velocity range
  • 0.5 to 235in (13 to 6000mm) pipe diameter range
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  • 0 to ±105ft/s (0 to ±32m/s) flow velocity range
  • 0.5 to 235in (13 to 6000mm) pipe diameter range
  • ±1% of rate accuracy
  • Quick response mode, 0.2 sec or less
  • Superior anti-bubble performance
  • 10,000mg/L max fluid turbidity
  • 4-20mA DC analog output
  • 2 open collector transistor digital outputs
  • RS-485 MODBUS communication optional
  • Advanced digital signal processing
  • Back-lit LCD display
  • 2 lines of 16 character each
  • Includes flow velocity, bi-directional rate and total
  • 100 to 240VAC or 20 to 30VDC power supply options
  • Loader software for programming and diagnostics
  • NEMA 4X (IP66) rating (NEMA6/IP67 is optional)

The Fuji Electric FSV ultrasonic flow meter is the latest generation of high performance ultrasonic liquid flow meters using transit time technology. It is particularly effective in applications where high accuracy is required and the flow meter needs to be installed without shutting down the process. It is the perfect option for measuring flow rates of relatively clean, homogeneous liquids in closed, filled pipes.

The FSV uses advanced digital signal processing technology to provide a compact, lightweight solution with accuracies that are better than ±1% of flow rate with minimal influence by the pressure or temperature of the measured fluid. It offers best-in-class anti-bubble performance, which allows for accurate readings with air bubble content as high as 12% volume at 3ft/s velocity.

The rugged construction makes it ideal for installation in internal and external environments where IP66 (NEMA 4X) protection is required and it is 2/3 the size of its predecessor, the Time Delta-S.

Configuration is simple and intuitive via push buttons on the front panel. Alternatively, free PC compatible software is available, allowing multiple configurations to be stored and downloaded from a PC to the meter. Real-time trending and data logging as well as diagnostics can be performed with the loader software. The software also includes a sensor spacing calculation tool. A selection of outputs which include 4-20mA, transistor outputs, and RS485 (Modbus) are available for when flow rates and totals need to be transmitted.

The FSV requires clamp-on sensors. These sensors clamp to the outside of pipes and cover pipe diameters from 13 to 6000mm (0.5 to 235 inches) at liquid temperatures from -40 to 200°C (-40 to 390°F). The system requires a straight pipe run of 10x and 5x pipe diameters upstream and downstream respectively.


Benefits of the FSV include:

  • No system downtime for installation
  • No system contamination
  • Superior anti-bubble performance
  • Noninvasive set-up with no moving parts
  • Minimal influence by the pressure or temperature of the measured fluid

Transit Time Ultrasonic Flow Meters – Technology Explained

Transit Time ultrasonic flow meters such as the FSV are well-suited for relatively clean fluids with low to moderate aeration. These meters operate by comparing the time for an ultrasonic signal to travel with the flow (downstream) against the time for an ultrasonic signal to travel against the flow (upstream). The difference between these transit times is proportional to the flow, and the flow meter converts this information to flow rate and total. With this technology, the transducers are mounted on the outside of the pipe, providing tremendous advantages over more traditional and invasive flow measurement instruments. This product is virtually maintenance free.

Here's how some of our customers use this product...

Measuring the Flow of Ultra-pure Water

The Background: A pharmaceutical company needs a solution for monitoring ultra-pure water at numerous locations.

The Problem: Inline meters for ultra-pure water have very strict surface finish and sanitary requirements making their installation costly and creating potential contamination points.

The Solution: The Fuji Time Delta-C ultrasonic flow meter provides an accurate, non-intrusive method of flow measurement. This eliminates all the drawbacks of installing a sanitary inline meter while still providing accurate flow measurement. Additionally, the Time Delta-C allows the customer to use a single meter for multiple locations, regardless of line size, as opposed to a meter specific to each installation location.

Monitoring Flow from a Lift Station

The Background: Our customer is a municipality that needs to monitor the flow from a lift station.

The Problem: The customer is unable to shut the system down in order to install an electromagnetic flow meter.

The Solution: We recommended a Fuji Electric Time Delta-C ultrasonic flow meter with clamp on transducers. This was installed on a 4" ductile iron pipe with a mortar lining. This is a very common size, but we have also installed it in similar situations on much larger pipes. We provided free technical support over the phone to help the customer install and program the flow meter. Within a short amount of time the system was up and running.

Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.

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