FLOWSIC550 Ultrasonic Flowmeter
State-of-the-art technology for maximum measurement accuracy: The FLOWSIC550 ultrasonic compact gas flowmeter ensures highly accurate billing of low volume flows in high-pressure networks - a perfect complement to the FLOWSIC500.
Field of Application
This overload-proof, accurate flowmeter is monitored by an intelligent diagnostics system and can be easily integrated into existing measuring stations. When used in transfer and measuring stations, FLOWSIC550 ensures a continuous and blockage-free gas supply.
- Gas measurement of low volume applications at high pressures
- Custody transfer: gas distribution, storage, and transmission systems
- Town border stations and city gate stations
Key Benefits
- Ultimate measurement certainty and safety of continuous gas supply
- Simple installation, replacement of turbine gas meters
- Reduction of installation costs due to integrated volume correction
- Easy commissioning and data reading via FLOWgate™ (PC and App)
- Minimal operating costs due to being nearly maintenance-free
- Reliable even when the gas flow fluctuates (on/off applications)
- Self-sufficient operation possible
Device Properties
- Diagnostics and permanent operational self-monitoring
- Durable and reliable without moving parts
- Compact meter installations
- Integrated volume correction
- Battery or intrinsically safe power supply
- Bluetooth Low Energy (BLE)
Technical Specifications
| Measuring Principle |
Ultrasonic transit time difference measurement |
| Measured Variables |
Volume a.c., volumetric flow a.c., gas velocity, volume s.c. (*), volume flow under s.c. (*) (*) additional function included with integrated volume correction |
| Measuring Medium |
Natural gas (dry, odorized), air |
| Repeatability |
≤ 0.1 % |
| Accuracy |
Qmin up to Qmax ≤ ± 1 %; Accuracy class 1; typical error limits
Qmin up to 0.1 Qmax ≤ ± 2 %; Accuracy class 1; maximum allowed error limits
0.1 Qmax up to Qmax ≤ ± 1 %; Accuracy class 1; maximum allowed error limits
After high pressure flow calibration: ±0.2 % at test pressure; otherwise ±0.5 %
|
| Medium Temperature Range |
-40 °C ... +70 °C |
| Nominal Pipe Size |
DN 50 (2) … DN 150 (6) |
Operating Pressure Ranges
| ANSI300 (ASME B16.5) |
≤ 48.7 bar (g); for -40 ... +70°C |
| ANSI600 (ASME B16.5) |
≤ 97.4 bar (g); for -40 ... +70°C |
| PN40 (EN 1092-1) |
≤ 40 bar (g); for -40 ... +70°C |
| PN63 (EN 1092-1) |
≤ 63 bar (g); for -40 ... +70°C |
Metrological Approvals and Certificates
- MID: 2014/32/EU
- OIML R 137-1&2:2012
- EN 12405: 2010 (for integrated volume correction)
- AGA 9, 2022
Hazardous Area Approvals
- IECEx: Ex ia [ia Ga] T4 IIB Gb
- ATEX: II 2 (1)G Ex ia [ia Ga] T4 IIB Gb
- NEC/CEC (US/CA): Class I Division 1, Groups C, D T4 Ex ia [ia Ga] IIB T4 Gb
- Class I, Zone 1 AEx ia [ia Ga] IIB T4 Gb
Digital Outputs
- 2x Pulse and Status (HF with fmax = 2kHz, LF with fmax = 10 Hz)
- 2x RS485, external powered
Encoder Options
- HF pulses + malfunction, electrically isolated (fmax = 2 kHz)
- Encoder + LF pulses, electrically isolated (fmax = 100 Hz)
- Encoder + HF pulses, not electrically isolated (fmax = 2 kHz)
- 2x pulses, HF and LF, electrically isolated (fmax = 2 kHz / 100 Hz)
Digital Communication