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Ultrasonic water flow meter accuracy.
For easy and cost efficient installation pick a highly advanced clamp on flow solution.
For maximum accuracy select from a diverse range of inline flowmeters.
Dane ultrasonic measurement of unsteady gas flow flow measurement and instrumentation vol.
Ultrasonic flow meters are inferential meters that uses ultrasonic technology to measure the velocity of an acoustically conductive liquid moving through it.
S full scale of the flow meter.
Doppler shift and transit time.
Example accuracy of flow meter in percent of full span.
A relative accuracy a absolute accuracy.
If the absolute accuracy is 10 kg h the relative accuracy at full scale 1000 kg h can be calculated as.
Inline or clamp on get a bit more with a siemens ultrasonic flowmeter the sitrans fs ultrasonic flow portfolio empowers you with choice.
Transit time ultrasonic flowmeters can fail to operate when an opaque fluid weakens the ultrasonic wave to such an extent that the wave does not reach the receiver.
With the deployment of a reference standard flow measurement device the meter can be calibrated across a specific known flow range.
In doppler ultrasonic flowmeters opaque fluids can limit ultrasonic wave penetration too near the pipe wall which can degrade accuracy and or cause the flowmeter to fail to measure.
The flow rate measurement that occurs in an ultrasonic water meter is critical to the accuracy of the meter.
Location ultrasonic flow meter 0 5 accuracy ultrasonic flow meter lrf 3300s sample book comparing with other traditional flowmeter or ultrasonic flowmeter it has distinctive features such as high precision high reliability high capability.
2 dandanzheng pengyongzhang tianshixu study of acoustic transducer protrusion and recess effects on ultrasonic flow meter measurement by numerical simulation flow measurement and instrumentation vol 22 pp 488 493 2011.
This indicates the lowest velocity at which the meter is able to maintain its accuracy statement.
By far the best reason to use an ultrasonic flow meter of any kind is the lower costs associated with installation.
The new daniel 3418 8 path ultrasonic flow meter crafted developed and designed by emerson offers the highest accuracy and best in class performance coupled with the same high functionality required by sophisticated fiscal measurement users.
For example if a meter has a maximum velocity of 20 ft s and performs accurately over a turndown of 10 to 1 then you can divide 20 by 10 to find that the minimum velocity at which the meter will uphold its accuracy statement is 2 ft s.
There are two types of ultrasonic flow meter technologies.
The 3418 combines the power of two interlocked 4 path british gas design meters in one flow meter body.
Therefore doppler ultrasonic flow meters are obviously better suited for aerated or impure water applications i e.
