Answer / 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.

Answer / vasavi power services pvt ltd

Commissioning means to run machine with desired output by
satisfying some conditions provided by manufacturer

Answer / jatin

commissioning of instrument has to deal with many steps. Availability of Cable tray and trenches. Laying of cable from Instrument to Junction Boxes and then Junction Boses to Marshalling Cabinet, which are connected with DCS/PCS controller. After laying of cables termination has to be done. which can be checked with the continuity of cable. the commissioning of instrument is still pending. The loop checking has to be performed for successful commissioning.

My rtd working well at the same time r/i converter is not working properly.when power is given to rtd..it is giving 30mA and getting 2.4 mA if i remove the compensate leads No matter how many ohms.why it is happening like so?what is the solution?rtd range-0-200deg c& 4-20 mA o/p.please give me solutiin anyone......

1 Answers  

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Hi buddies! i am facing a problem and if someone could help me it will be an immense pleasure to me. we have compect logix PLC 1769 2L AO module to Heat @ 52 to 56 Deg C .So if anyone can do please help me out with this problem.I'll be highly grateful.

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Why do we floating DC in DC system.

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Specific gravity.

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Isometric drawings are generated during _________________ phase of a project

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hi everybody. right now i am working with thermal power plant. our company plant is tripped because of program corrupt. i would like to know is it possible when the plant is running. we are using FREELANCE ABB800F CONTROLLER.

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HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.

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What is the Temperature Co-officient of Resistance of PT- 1000 and PT-2000 ?

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In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.

0 Answers  

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