why 4 to 20 ma ,why not 0 to 20 or 3 to 15 or anything
Answer Posted / aravindan k
beyond 25 mA in live due any damage it cause spark, so the
they maintain below 25 mA it doesnt cause spark even
puncture or damage the live cable......
this is reason for maintain 4-20 mA. so we can use signal
at any environment
Is This Answer Correct ? | 6 Yes | 3 No |
Post New Answer View All Answers
What are different types of orifice plates? State their uses.
why is an oxygen sensor used in a boiler stack
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
What are different types of cable?
what is vibration a part of proceess variable? if vibration is a part variables then how we minimize the actual vibration on machine on load,? vision of instrumentation contrl plz ans me IPGDL interview question
what is the advantage of submersible level transmitter compare to ultrasonic level transmitter?
How to work togather like sov,limit switch,proxy switch and booster in xv
how to convert cubic metre per hour to newton cubic metre per hour
where proximity sensor installed on tank in loading arm application
How do bending tubing provide better measurement than using tubing fittings such as elbows?
What is ultrasonic flowmeter?
How many are the types of instrument cables in terms of No. of pair.
What is stripper & spilitter ? Diffrence in this.?
dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.
I want to know about DDCMIS in detail ? please explain it. Also give name of reference books in which it is explained in detail in very simple manner.