Answer / gobinath

But Generally 3 wire RTD only preparred for Industrial
purpose. Most of the Industires & Design document suggest 3
wire RTD is suitable for any application.

Answer / basit

for long distance and more accuracy we use 3 or 4 wire RTD

Answer / shani_dms

depend on distance if distance too short its should be two
wire
3 and 4 wire used for long distance

Answer / rashidmanzoorkt

If the distance between transmitter and RTD is not long,Any
rtd (2,3 or 4 wire)is suitable.

Answer / bhardwaj**

generally pt100 3-wire rtd is used as third wire
compensates the error and maintains the accuracy of
measurement system

Answer / s vedpathak

3 wire RTD (PT100)is good compare to 4 wire & 2 wire as the
lead wire compensation is achieved in it with less cost.

Answer / ashish namdev, bina refinery [

3 & 4 wire rtd use for temp. compensation from sensor to Tx.
3 wire is good & mostly use.
4 wire is best because in 4 wire, both wire(+ & -) have
compensating cable. then reduce unwanted temp. approximate
negligible. then get correct output.
2 wire have more temp. interference error.

Answer / naseer jarral

3 wire rtd is good bcz thired wire is used to compensate
wire resistence it is a wheet stone bridge

Answer / m.murali- inst.technologist

Balance two wires are used for compensation, if no. of
compensation cable increases ie compensation resistance become
average.

how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?

0 Answers   Chevron Phillips,

I have flow transmiter DP range is 0 to 5000mmwc,(convert) Display to be show in m3/Hr.

3 Answers   Orient,

how to calculate MMWC values in to Tonns(MMWC values showing in DP transmitter and Tonns value showing in Totalizer). please tell me details?

2 Answers   Chemin C I, MSP,

(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.

0 Answers   ADMA OPCO,

tell me about Woodward505 Function as a point of Instrument Engineer.

4 Answers  

1.In which princeple DP transmeter works? 2.Why UPS system is use for DCS? 3.How drum lvel controller works? 4.What is the difference between glob valve and gate valve? 5.How axial shift probe work & in which princeple it works?

1 Answers   Luberef, Qatar Gas, Reliance,

What are the logic behind 2x2 and 2x3 logic and more when ask in interviews

1 Answers   Reliance,

How the sizing of the analog signal cable is calculate?

0 Answers   Reliance,

how do i calibrate mmwc pressure guage with out calibrator.if any? pls give me the ans.

1 Answers  

Why we are using thrust bearing at turbine side?

3 Answers   Edac,

Why grounding is necessary? Give example with diagram.

0 Answers   Bright Point, DS Group,

what is sil (safety integrity level

0 Answers   Essar,