when we are using HART COMMUNICATOR why we are using 250 ohm
resistance while using HART COMMUNICATOR.

Answer Posted / anees

Because that Hart Calibrate need proper loop resistance
there for when we use in lab/Bentch calibration we need
it,otherwise in field calibration we doesnot needed

Is This Answer Correct ?    18 Yes 10 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?

2628


why I need valve guard and whats different between guard and positioner ??

873


What is the purpose of LO Overhead tank in turbines.

1567


How to calibrate RC Feeder system in thermal power station?,If any instrument available to calibrate it,ple inform me. make:stock,

2712


while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?

1700






in natural gas indirect water bath heater,how to prevent the problem of backfire from firetube during ignition...becoz of this backfire performance of wbh is going low.

2288


what is output of FOUNDATION FIELD BUS transmitter

1691


Hi i am aneesh, done btech in applied electronics & instrumentatiin. And then i took mba in finance & marketing.After that i got placement in finance co and worked there for 3.5 yrs.Now i wanted to come back to engineering job.But without engg experience, i may not able to find an opening.i have done a course related to flow meters and ite calibrations. Kindly suggest where should i try to get a job?

1533


which type inter lock use in petrochemical refinery,and oil & gas?

2629


Drum level tx with GP4 with zero elevation:7300mmh20 on HP and 8050mmh2o on LP as range but on commissioning the tx readiing is max,Why this reading?

1488


what is the protection system in solar turbine compressor

1707


How many types of sensor

1152


Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

1560


why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

2200


Is there any relation between Artificial Intelligence and Instrumentation?

583