why the SCAN time of DCS is more & that of PLC is less? if the SCAN time of DCS then why we use DCS.

4 Answers  

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why most of the DP transmitters using maximum range as 0-2500mmwc?why not 1000 2000 3000 4000mmwc

2 Answers   SPIC, TNPL,

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what is the diffrence between plc&dcs

4 Answers   HCL, Hindustan Zinc,

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How to calibrate DP tramitter in flow measurement application? consider my range of flow is 0 to 2000 kg/hr ? please give calculation of , How much pressure applied on low pressure side and high pressure side please give detail of calculation .... It so important for me please reply as soon as possible

1 Answers  

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Any Transmitter Range (Span value) start from 2?

1 Answers   Exxon Mobil,

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in any transimitter (flow/level) there are three terminals for supply& test (+,-,+)in two wire,24VDC given to Tx.,but how 4-20 ma signal travels thru same wire (as it is for 24VDC input supply)?

1 Answers   Jindal, UltraTech,

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I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay

3 Answers   Qatar Petroleums, Samsung,

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What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

0 Answers   ADMA OPCO,

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can anybody tel me how a vfd or any field instrument communicates/interface with plc/scada/cs.

0 Answers   Honeywell,

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PLEASE PROVIDE SAMPLES OF CHEVRON SKILL TESTS

0 Answers  

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Conversions

0 Answers   CCIE, Nestle,

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whey we conect ammeter in series and voltmeter in parallel in circuit

1 Answers  

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