Interested to Buy Any Domain ? << Click Here >> for more details...
1)why we are using mostly Ultrasonic Flow meters to measure
flow, rather than Radar waves?
2)why we are using Ultrasonic waves and Radar waves to
measure the Level?
- 1 Answers
- 4689 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / carl_ellis
1)why we are using mostly Ultrasonic Flow meters to measure
flow, rather than Radar waves? 2)why we are using Ultrasonic
waves and Radar waves to measure the Level?
Most fluids will 'conduct' ultrasonic energy. Conduction
is necessary because the energy needs to originate in a
transmitter transducer, pass through the liquid and be
received by a receiver transducer. The movement of the
fluid changes the sonic velocity of the energy, which is
measured to then calculate a flow rate.
Many fluids either reflect the radar frequency signal or
absorb the signal so that there is not enough energy left to
measure.
Radar frequencies reflect when a radar signal encounters a
dielectric difference. So radar easily passes through air,
with a low dielectric constant, but reflects back from
water, which has a high dielectric. So radar is useful for
level detection with liquids or solids that have a
dielectric higher than the minimum required to reflect
energy back to the transducer.
Ultrasonic energy reflects from most liquids and solids so
it can be used for level measurement.
Carl Ellis
Measure First
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?
how many maximum enter 2mm Dia solid cylindrical pipe into 8mm Dia hollow cylindrical pipe. give answer with calculation.
What happen if we install my pressure transmitter below the elevation of pipe in natural gas service?
what is difference between fork type and capacitance type level switch. where it is using
what is interface level measurement.who can calibrate interface level measurement transmitter online
can we create an interrupt in plc through scada?
Why is the orifice tab provided?
why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V
What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)
Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.
why micro controller 8051/52's clock frequency is internally divide by 12 ?? and why it is further divide by 32 in UART serial communication ??
Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent
what is a good line as ic engineer as maintenance ,oc, project, calibration ,validation engineer?
why is an oxygen sensor used in a boiler stack
Why do we have earthing cable in branch cable and shield in the same cable?
