Interested to Buy Any Domain ? << Click Here >> for more details...
why 4 to 20 ma ,why not 0 to 20 or 3 to 15 or anything
- 19 Answers
- 47506 Views
- Honeywell, TCS, TN, I also Faced
- E-Mail Answers
Answer Posted / sukhiray
the lowest value is not 0 to create a difference in between
broken ckt or any other error in ckt and actual min current
value.
b'coz for broken ckt or any other fault in ckt the current
o/p will be 0. means no current. but when it is 4 , then it
is the min o/p of the ckt and the ckt is running properly
both is confirmed.
the upper limit is a conventional one, no such reason behind
it. but it is a value practically can be achieved by the
designer easily.
4-20 ma could be taken it is followed by all manufacturers.
| Is This Answer Correct ? | 94 Yes | 18 No |
Post New Answer View All Answers
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
what is the process to make control schematic ?
How to calibration coriolis flow meter?
How to calibrate an pressure gauge with yantrika test bench?
god evening sir i am studying m.sc(tech)electronics &instrumention.am i elegible to all industies
What is the difference between mmwc and mmwg?
how to connect transmitter measuring sulfur process? 1-by using long impulse line or 2- by using coated short impulse line
Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem
How does work A temperature valve or fv control valve in process plz brief me
i want to find out iffco get test paper
Im having problems with interfase betwen SPI v7.0 and SPPID v5.05. Previous versions of Intools shoul be fixed with SPPIDproj.ocx file. It was necessary to replace this file with one that allows the connection between different versions of SPPID. It is necessary in the current version to do the same?Thanks
use of split range ? where it is used ? in which control loop it is used ?
What is the use of temprature compensation?
how to design orifice plate?what is the equation?
wich is coming the first HAZOP OR SIL
