What is two wire system and how it work
- 2 Answers
- 6235 Views
- Bhel, IFFCO, I also Faced
- E-Mail Answers
Answer Posted / asim
By 2-wire it means the transmitter is powered form the
system to which it is connected... normally 24VDC and 4-
20mA signal is connected to the control system using only
one single pair of wires.
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
hi my name is rakesh patel i just complited my be in instrumentation & control now i am going to working as a validation engineer in a poject department so what is a scope in a future as a validation engginer ? what line is good for me can any bady give me complete solution please? your regard rakesh patel
Galvanizing.
how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with
In power plant to measure vibration of a turbine we install sensors. Before install this sensor we have to set gap voltage. What is meant by gap voltage and its use?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers
How many interlocks at turbine? Plz explain briefly
What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.
any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com
the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove
what is easiest way to read STL language in PLC?
Valve positioner and actuators in detail.
Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?
How process line mpm calculation is done?
