in a electronic controller why we are using 250 ohm resistance in input signal?is i/p is necessary in control valve when we are using electronic controller give details?
IOCL,
3 8710During valve sizing from all calculation you got flow coefficient CV 12,than what it means? like for selecting pressure transmitter if your MAWP is 12 bar than you select a capsule of max. 20 bar which cover your mawp 12 in same way for selecting control valve If CV is 12 than how we use it in selecting valve??????
1 4219Could you explain to me the enraf (servo gauge) mechanism. How it works ? and how it is working on archimedes theory while it's not immersed into the surface? and how can we calibrate it ? Thanx
1 4810Why Differential pressure transmitter is located below the tappings points for steam & condensible vapor flow measurement application?
2 6442how to connect 3 wire 4-20 mA transmitter in Plc system PLC system and how explain how the measuring data communicate with plc system.
1 16431how can we measure the pressure in underground cooling water pipeline by using pressure transmitter?what about the tapping position?
2 5978IS IT POSSIBLE TO CALIBRATE A LEVEL TRANSMITTER INDICATOR(ABB) USING HART COMMUNICATOR.? I MEAN TO CHANGE FROM ONE UNIT TO ANOTHER WITHIN INDICATOR (EG. INCH TO FEET)...? PLZ NOTE THAT I HAVE MADE THE UNIT CHANGE IN TRANSMITTER USING HART COMMUNICATOR..BUT WHAT ABOUT THE INDICATOR..?
2 5813Post New Instrumentation Questions
how to do dynolab wind speed sensor loop test, how to simulate value,i have simulate mA 4-20mA but not responding in DCS faceplate, please kindly advice me any one.
in mass flow meter what is drive friquancy ?
Explain signal isolator
why we use cascade control and feed forward control in 3 element drum level control measurement of steam drum .what is cascade and feed forward control system ?give example .
Explain why use mmwc unit?
how pressure transmitter work, what is its principal to measure and how its generate signal. for pressure transmitterinstallation which precautions must be taken ??
in sulfur process what is material of impulse line we use to connect with transmitter ? and does teflon affected by sulfur?
OBJECTIVE TYPE QUESTIONS OF ANALYTICAL INSTRUMENTATION
How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?
hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.
what about your moleg in pogrees with company
you are on site,the plant trips,you are approached by operations,what do you do?
How digital input and digital output 's are working in dcs
Explain the mechanism behind the turbine meter.
Can I route 110 VDC and 24 VDC in a same Duct for our Interposing relay cabinet? IF yes or NO Please provide me IEEE Std. for the same. Please i required it on Urgent basis, i need to design IRP Cabinets and we have MCC 110VDC and Our Coil side is 24VDC, Please help as soon as possible.
