Interested to Buy Any Domain ? << Click Here >> for more details...
What is loop checking ?
- 10 Answers
- 113121 Views
- Kharafi National, Petrofac, Samsung, I also Faced
- E-Mail Answers
Answer Posted / dnz_72
In simple terms it is a test starting at the process variable through the controller and back to the control device to see if everything is working properly.
As as example: You have a tank with a water level controlled by an inlet valve that opens or closes as needed to maintain the level.
The signal from a level device (let's say a level transmitter) goes to a controller. A signal then goes from the controller to the level control valve opening or closing it. That is the control loop.
The loop test determines if the proper signal is going from the level transmitter to the controller and then is the correct signal going from the controller to the control valve and is it opening or closing as it should.
| Is This Answer Correct ? | 16 Yes | 3 No |
Post New Answer View All Answers
whats the abbreviation of IOP? is it instrument of power or input open problem?
what is the usage of QDV & VOLUME BOOSTER
What is stripper & spilitter ? Diffrence in this.?
What is difference between Ionization heat and bimetallic heat
What is instrumentation measurement?
How servomotor controls throttle valve of TURBINE?
What is offset in a control system.
Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com
What is the difference between modbus,fieldbus & profibus
Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?
Basically iam Instruemntation Engineer, but Iam interested in Instruments design engineering, so plz guide, is there any course, training or Softwres to become Instrument design engineer??.
I have got a call of IOCL interview for projects having 2yrs experience. What sort of questions should I expect in the interview?
How we connect a instrument with ground, Give brief explanation with help of diagram?
In which principles tx ,pressure gauge,Temp gauge,control valve works?
What are primary elements of measuring pressure? Which type of pressure can be measured by these elements?
