Answer Posted / james c
When installing instrumentation, cable is run from the marshelling cabinet, or some control system to the instrument in the field. The act of attaching the cables to the actual electrical terminals of the instrument or input output terminal at the Transmitting or receiving end is called Terminating the instrument. I.E instrument termination. Usually the instrument loop is installed in stages, where the instrument is physically mounted in the field, cable is pulled and run in cable trays or buried in trenches, and the ends of the cables are terminated.
Once prior to completely terminating a loop, the cable run is normally loop tested. I.e. Point to Point continuity checked. Once the cable is found to be good, and the instrument terminated, calibrated and tested to be functioning at the control system, the instrument is said to be commissioned. I.e ready for service. That is called commissioning. Usually commissioning forms a entire stage/phase of its own in a project.
| Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
please send the sample qustion paper for iocl written test ..
what would be the minimum flow rate that we can measure on rotameter..?
Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?
Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,
what is the criteria to decide conductor size of a cable ?
what is the process to make control schematic ?
how to work MIL contol valve posistioner ?
what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?
What are the application of bernoulli’s theorem?
how to calibrate load cell
How to calibration a control valve?
Why upper weighing limit of electronics balance is 90% of the total weighing capacity?
With N nodes and B branches what will have a network ???
how u choose thermowell lenght n pnumatic C/v size?
Explain the burnout feature.
