| Fluid |
Fluid |
Uniform liquid through which ultrasonic wave can propagate (crude oil, drain, slurry, dye, soy milk, etc.) |
| Fluid temperature |
-40°C to +100°C (FSWS12)
-40°C to +80°C (FSW21, FSWS40, FSWS50) |
| Applicable pipe |
Pipe size |
| Inner diameter |
Detector |
| 40–200 mm |
FSWS12 |
| 100–400 mm |
FSWS21 |
| 200–500 mm |
FSWS40 |
| 500–1000 mm |
FSWS50 |
|
| Pipe material |
Plastic (PVC, FRP, etc.), metal (SS, steel, copper, aluminum, etc.) |
| Lining material |
Coal tar epoxy, mortar, etc. |
| Performance |
Accuracy |
| Principle |
Inner diameter in mm |
Velocity in m/s |
Accuracy |
| Pulse doppler method |
40–50 |
1.5–Max. |
±1.0% of rate |
| 0–1.5 |
±0.015 m/s |
| 50–200 |
1.5–Max. |
±0.5% of rate |
| 0–1.5 |
±0.0075 m/s |
| 100–1000 |
1–Max. |
±1.0% of rate |
| 0–1 |
±0.01 m/s |
| Transit time method |
40–50 |
2–32 |
±1.5% of rate |
| 0–2 |
±0.03 m/s |
| 50–300 |
2–32 |
±1.0% of rate |
| 0–2 |
±0.02 m/s |
| 300–1000 |
1–32 |
±1.0% of rate |
| 0–1 |
±0.01 m/s |
|
| Response time |
0.2 s (pulse doppler method)
0.5 s (transit time method) |
| Range |
0 to ±0.3…±4 m/s (pulse doppler method)
0 to ±0.3…±32 m/s (transit time method) |