Answer Posted / ytd

There are two types of communication signals PlC is
handling either to field instruments ( O/p) or from field
instruments ( i/p). This digital signals are used as
control on / off operation in o/p card and read present
status in the form of On or OFF.
Digital signals are in the form of binary logic either
Present ( High may be 5 V / 24 V) or Low ( o V)
In analogue form of signal It can be 0 to 10 V in descrite
values ( o to 100%) or 4 to 20 MA) These analogue signal
received from Load cells, Transducers or from position
control devices.

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3332

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What is the use of GMV in turbine?

4439

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Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.

1893

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how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?

2223

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please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

2247

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What is the difference between PLC and DDC?

2189

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4095

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For what reason would you possibly be compelled to make use of a Smith Predictor. Explain the idea behind the operation of this device.

1934

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Hello to all....I am an Instrumentation Graduate and i am passed out in this year only.. I am unable to find the job in my core instrumentation.. so any boby tell me how to and where to search the job....please...and also tell me i there are any courses offered in the instrumentation stream so i can do it... you can send your suggestions to my mail-id i.e Ganesh20084u@gmail.com ... please..

1988

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Sir, I am working as a Instrument Engineer in Grasim Industries. Can any body provide question answer for interview purpose

2263

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What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

1914

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What is the use of control cable?

1156

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1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling

2431

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Draw a complete P&ID of a flow suction tank indicating all control & protection equipment. Indicate all its inlets and outlets. Explain the controls for this system

1534

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what is the procedure of O2 sensor(ABB) calibration?

2189

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