For the measurement, two ultrasonic pulses are sent through the medium, one in the flow direction, and the other against it. The transducers work alternatively as emitter and receiver.
The transit time of the ultrasound signal propagating in the flow direction is shorter than the transit time of the signal propagating against the flow direction. This transit time difference is measured and allows the determination of the average flow velocity on the propagation path of the ultrasound signals. A velocity profile correlation is performed to obtain the average flow velocity across the cross-section of the pipe, which is proportional to the volume flow.
In this technology the key aspects for precision performance is its transmission and reception technology. Transit time provides an innovative direct ultrasonic transmission technique that ensures reliable and accurate signal detection for a wide range of purposes,Handheld
- Measuring principle: Transit-Time Ultrasonic Technology
- Quick & easy operation.
- No moving parts. Maintenance free.
- Useful for tasks that demand portability & advanced performance,
- Built-in Data Logger .
- Low Power consumption,
- 16 installation parameters can be stored for easy retrieval.
- 10 Hours battery life under maximum load.
- High reliability & precision
- Low maintenance
- Diverse interfaces
- Low power consumption
- Easy/low cost installation.
- No interruption in operation (no need to cut the pipe).
- No contact with media,
- No pressure drop or energy loss.
- No periodic cleaning & No moving parts to wear or foul.
- No interruption to the flow
|Portable ORFLO-70H||Light-weight and the most advanced portable version with internal data logging capability|
|Pipes Measured :||Steel, Stainless Steel, Cast Iron, Asbestos, PVC, Cement, Concrete or any pipe with known sound velocity property|
|Pipe Sizes :||15 to 6000 mm|
|Fluid :||Water, sea water and other clean liquids without high level of suspended particles|
|Suspended Solids :||<10,000ppm|
|Flow Velocity :||+ 30 m/s|
|Accuracy :||+ 1.0% of Reading|
|Repeatability :||±0.2% to 0.5%|
|Ambient Temp. :||-20 to +70degC|
|Ambient Humidity :||85% RH Max.|
|IP Rating :||IP 65|
|Power :||Internal Battery AC 110 to 250V charger|
|External Inputs Data Logger :||RS-232|
|Dimension :||200 x 85 x 30 mm|
|Weight :||9 kgs including transit case|
|Pipe Ranges :||S 15-100 mm; M 50-700 mm; L 300-6000 mm|
|Operating Temperature :||-20 to 120 degC|
|IP Rating :||IP 68|
|Cable Length :||5 m by standard (optionally, can be up to 400 m)|