How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error

2 Answers  

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WHICH INSTRUMENT USED TO CALIBRATE CONTROL VALVE?

8 Answers  

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cascade controller is feed back or feed forward or both

4 Answers  

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[ MITUTOYO / TESA / KUMAUN / MAHR / BRITOOL / TOHNICHY / DIATEST-GERMANY / IMADA / TECKLOK / SYLVAC /ADITYA=ACCURATE / BAKER/ CRYSTAL / FLUKE-RAYTEK ETC. 5.=SUPPLY= VERNIER CALIPERS / MICROMETERS / HEIGHTGAUGES / SLIPGAGE / BORE DIAL GAUGES / MEASURING PINS / TORQUE WRENCHES / GAUGES.. PLUGGAUGES / RINGGAUGES / SHORE A / D HARDNESS TESTERS / DIAL THICKNESS GAUGE / FEELER GAUGES / ELECTRONIC COMPARATORS WITH PROBES / DFTMETERS / SURFACE ROUGHNESS TESTERS / DIGITAL= COATING THICKNESS METERS / PROFILE PROJECTORS /.. WE ARE ALSO DEAL IN == DIGITAL TACHOMETERS / =MULTIMETERS! / VIBRATION METERS / MEGERS- INSULATION METERS / =TE! MPRATURE INDICATORS / SOUND-LEVEL METERS / ETC... =AGENCY- FLUKE- RAYTEK.. MECO....LUTRON...KYORITSU....RION

0 Answers  

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What is Predictive Maintenance

0 Answers  

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what is DCS and SCADA?

2 Answers   APL,

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Why we are using sqare root in flow?

4 Answers  

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why we are using orfice plate? then difference between orfice 7 nozzle plate?

1 Answers   Flour Tech Engineers (P) Ltd,

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my temperature transmitter in field showing 700 degree , whereas in dcs showing 459 degree, how to resolve this?

4 Answers   ONGC,

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What is eddy current? Describe the operating principle of proximity probe.

0 Answers  

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what is procedure of calibration of remote seal transmiter, botom to top flanch 850mm, fluid liquid density .73, transmiter fixed on a fractionation colum, under vaccume 10mbar

4 Answers  

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Hook up resistance decade box to temp.transmitter.

0 Answers   CCIE,

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