Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / leigh
In a differential pressure flow meter (orifice + DP Cell), pressure is measured before the orifice and after it. This pressure difference is used to measure the flow of the liquid in the pipe. If the pressure difference is more, the flow is more and vice a versa. The problem with this method is that the pressure difference is not proportional to the flow so if the velocity (flow) of the liquid increases, the pressure increases but at a different rate. If you were to plot this on a graph you would get a curve. This curve is not much good for auto control requirements. We have to make this curve straight or linear so that we can get a linear signal from the meter. A square root extractor is used to do this.
| Is This Answer Correct ? | 33 Yes | 2 No |
Post New Answer View All Answers
how many types of viberation transmitter and how to calibrate and where use of vibration transmitter
List three types Level Switches with their working principles
What is the difference between ff transmitter and non ff transmitter
what are the use of belew gear in general ??
How does your previous experience relate to the job you are applying for ?
how to connect transmitter measuring sulfur process? 1-by using long impulse line or 2- by using coated short impulse line
Why do we have earthing cable in branch cable and shield in the same cable?
Which type of pressure can be measured by these elements?
How we connect a instrument with ground, Give brief explanation with help of diagram?
Please send me the sample question of Instrumentation of hpcl/iocl exam. my mail id hihi_kiholo@rediffmail.com
how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.
Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.
Regarding , there is an air cooler which control the fans(50% of AV FANS) by temperature in outlet , and the louver of Air cooler is controlled by HIC from control system , So if on Air cooler we will consider 2 individual I/P converter or positioner?
what is the difference between attemperator and desuperheater ?
what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.
