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hi... i'm about to learn siemens plc i came across following question in my mind ... plr ans 1. hw motor operated by plc 2. hw drive operated by plc explain dis by both ladder logic diagram and hardware config , connection
2 3725Single acting ON-OFF valve. it is air to open. when sov energized , valve will be open, so during that if air fail then what will be the condition of valve ( open or close ) ???
4 6156how to change 4 wire rtd transmitter into a 3 wire rtd transmitter? as our transmitter is working for 4 wire rtd, what should do for working on 3 wire rtd transmitter
HHJ,
1 3839How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.
1761Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,
1737Post New Instrumentation Questions
I will attend an interview with GasGas company for a position of Instrument Technician ( Offshore )in next month can anyone tell me what questions they will ask. Thanks in advance.
I was working on calibrating turbidity transmitters endress+hauser at effluent polishing plant.We calibrated using NTU buffers.What happened is that when we immersed the sensor, everytime we raise and lower the sensor gradually, the reading will vary.my question is that is there any specifications on what is the required distance from the bottom of the container with buffer to the face of the sensor?Is it ok to install the sensor in a medium which has turbulence specially if bubbles are present?
where i can get training in INTOOLS and PDMS in Delhi-NCR OR north part of India. please reply with ur ans. at arunsamkaria@ymail.com
Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection
what is interlock system and why we use of this?
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
plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}
what are the different types of Protocols? & their applications.
Explain an adaptive / self-tuning controller’s major draw card.
How to Calibrate Flow Switch in field
Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com
send me HPCL paper
can anyone guide me how to get any of the previous year GAIL question papers? are they available? 0n 2nd august i have to take the written test.
dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.
god evening sir i am studying m.sc(tech)electronics &instrumention.am i elegible to all industies
