This flowmeter is a clamp-on type ultrasonic flow meter based on transit- time measuring method.
Making full use of the latest electrics and digital signal processing technologies, we realized the equipment with improved anti-bubble performance high accuracy.
The communication function (MODBUS: option) is also applicable.
The Fuji Electric Time Delta-C 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 Time Delta-C 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 Time Delta-C 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 Time Delta-C 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
Applications
- Homogenous liquid where the ultrasonic signal can be transmitted
- Bubble quantity: 0 to 12 vol % (For pipe size 50A, water, velocity 1m/s)
- Fluid turbidity: 10000g/L max.
- Type of flow: Fully-developed turbulent or laminar flow in a full-filled pipe
Specifications
| System Configuration | Sigle-path system of a flow transmitter (Model FSV) and transducer (Model FSS) |
| Accuracy | ±1.5% (±1.0% is also available) |
| Flow Velocity Range | 0 to ±0.3 … ±32m/s |
| Power Supply | 100 to 240V AC +10%/-15%, 50/60 Hz; or 20 to 30V DC |
| Ambient Temperature | Flow Transmitter : -20 to +55 ºC |
| Transducer: -20 to +60 ºC | |
| Power consumption | 15VA max. (AC power supply) |
| 6W max. ( DC power supply) | |
| Serial Communication (optional) | RS-485 (MODBUS), isolated, arrester incorporated Connectable quantity: 31 units Baud Rate : 9600, 19200, 38400bps Parity : None/Odd/Even selectable Stop bits: 1 or 2 bits selectable Cable length: 1 km max Data: flow velocity, flow rate, forward total, reverse total, status, etc. |
| Analog signal | 4 to 20mA DC (1 point) |
| Load resistance : 600Ω max. | |
| Digital Output | Foward total, reverse total, alarm, acting range, total switch assignable arbitrarily |
| Transistor contact (isolated, open collector) Output: 2 point Normal: ON/OFF selectable Contact capacity: 30V DC, 50mA Output Frequency: 1000P/s max. (pulse width: 5, 10, 50, 100, 200, 500, 1000ms) |
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| Material | Transmitter: Aluminium Alloy |
Transducer:
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Reference: https://www.fujielectric.com/
Data Sheet Fuji FSV,FSS Ultrasonic Flowmeter ＜TIME DELTA-C＞
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