Answer Posted / vino
Devices such as ultrasonic flow equipment use the Doppler frequency shift of ultrasonic signals
reflected from discontinuities in the fluid stream to obtain flow measurements. These
discontinuities can be suspended solids, bubbles, or interfaces generated by turbulent eddies in
the flow stream. The sensor is mounted on the outside of the pipe, and an ultrasonic beam from
a piezoelectric crystal is transmitted through the pipe wall into the fluid at an angle to the flow
stream. Signals reflected off flow disturbances are detected by a second piezoelectric crystal
located in the same sensor. Transmitted and reflected signals are compared in an electrical
circuit, and the corresponding frequency shift is proportional to the flow velocity.
Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
what is difference between HOT permit and cold permit
WHAT IS TMXT IN TEMPERATURE FOUNDATION FIELDBUS.
How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks
Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent
what is function of sensor, and how is it work , explain with difination
What is Erosion in a control valve?
how to calibrate load cell
how many types of preheaters are in cement industry & what r they can any body explain?
What is instrumentation control?
Isometric drawings are generated during _________________ phase of a project
How many types of sensor
What is the use of temprature compensation?
Whatis the reset ofset and control system in instrumentation
In apron feeder how TPH is calculated?
how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?