Interested to Buy Any Domain ? << Click Here >> for more details...
In 2 wire transmitter 1 wire is used for power and other is
used for signal( 4-20)ma
In 4 wire transmitter 2 wires are used for power and 2 wires
are used for signal (4-20)ma .
but my question is "what is the criteria or parameters we
have to consider while selecting these transmitters for eg(
distance, safety zones etc.
- 1 Answers
- 5417 Views
- I also Faced
- E-Mail Answers
Answer Posted / omer baosman
A 2 wire xmitter is powered by the mother instrument. The
output signal(4-20ma) is returned on the same wires that
powers it. the main purpose of this design is to reduce
wiring cost, standrdisation of circuits, and above all, to
kep all the transmitters at same ground potential.
A 4 wire inst. has design flexibility to utilize any power
like, 230vac, 24 vdc or 110 vac. It can feed the signal to
any mother instrument. Wherever the basic sensor of an
instrment needs power other than 24 vdc (like chemical
analyser) u have no choice but to use a 4 wire xmitter.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
Explain the working of an enraf level gauge.
i am having information technology branh ....... can i prepare for psu exam
hye SAM acn u send your e mail id, so that i can solve my query through e mail?
please send me the inteview questions in IOCL
A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer
1)How many tpes of vibration probe and how many tpyes of vibration. 2)how we can calibrate a vibration probe with tk3 3)what is RMS value in vibration measuring application and how we calculate it.
in differential pressure transmitter,min&max pressure range for hp&lp
Tell about your IFFCO plant visit.
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.
What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?
what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail
I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration So is there any causes biside this or any permissives ?
Which language of programing is popular? how can i learn it ?
why Fahrenheit unit of moistur analyzer transmitter
all questions related to instrument technician in any offshore oil and gas company.
