Interested to Buy Any Domain ? << Click Here >> for more details...
how to measure the output of RTD given the general formula of rtd.
- 2 Answers
- 6012 Views
- I also Faced
- E-Mail Answers
Answer Posted / rajesh.
RTD is Resistance Temperature Detector. As temperature varies resistance also change. So the output of RTD is Resistance. Which in terms converted into current (4 – 20 ma) by means of Transmitter. Generally RTD is available as Pt100.
Pt100 means 100OHMS at 0’ C for a platinum resistance bulb.
Formula for RTD:
Rt. =Ro (1+α t)
Rt. =Resistance of zero temperature.
α = Co. off of thermal (expansion)
t = temperature to be measured.
Example:
Calculation of Resistance or Pt 100.
Ro. = 100
α for platinum = 0.00385/c.
To calculate Resistance at 100’c
R100 =100(1+(38.5*104*100))
100+ (100*0.385)
R100 =138.5
Resistance at 100’c = 138.5
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
What is the start up procedure of desalter
I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.
How servomotor controls throttle valve of TURBINE?
Why do we have earthing cable in branch cable and shield in the same cable?
Hook up resistance decade box to temp.transmitter.
What is intrinsically safe system?
Punj lloyd is coming in our Jadavpur Universtiy campus for campus placement. Please send me some hints about the writtend exam. My email id is subratafriends@gmail.com
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?
How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.
What is the Working principle of Dozing valve?
In turbine, what does term CDP, NI, NH, HSSOC, means
kindly sent some demo question and answer
send me last 5 years questions asked in rrb chennai, for section engineer
how many types of preheaters are in cement industry & what r they can any body explain?
what would be the minimum flow rate that we can measure on rotameter..?
