How a Flow Transmitter Works?
Answer / rijo dennis
A Flow transmitter will produce 4-20mA as its output. According to the differential pressure applied to the diaphragm of the D.P it will produce electrical signal. In the cause of the flow the out put current will be in the square root proportional mode, i.e
input= 0% then output= 0% 4.00 mA
input= 25% then output= 50% 12.00 mA
input= 50% then output= 70.71% 15.31 mA
input= 75% then output= 86.60% 17.85 mA
input=100% then output= 100% 20.00 mA
For a level transmitter it will be operated in linear mode,i.e,
input= 0% then output= 0% 4 mA
input= 25% then output= 25% 8 mA
input= 50% then output= 50% 12 mA
input= 75% then output= 75% 16 mA
input=100% then output= 100% 20 mA
The same DP(Differential pressure) Transmitter can also used for both flow and level,but the one and only change in the mode of operation. flow is proportional to the
square root of the DP,but floe is directly proportional.
Is This Answer Correct ? | 10 Yes | 0 No |
What are the charecterstics of control valve.
why we are using negative range like -750 to 0 mmwc in closed tank?and what is the reason can you explain clear?
hello i'am samad.Any one Can help me! How to calibrate Vaccum Transmitter DP Type range 0 - 50 mbar abs by hand pump calibrator.
how to overhaul control valves.what are the proper procedures.
How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer
How to fix back the valve actuator stem
how to control motor load with rpm or vfd
What is the meaning of slope in PH transmeter?
how to calibrate the interface leveltrol
in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.
what happen if i install my pressure transmitter below the elevation of pipe in natural gas service. Also support your answer
How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?