Answer / prateek pathak

DDC stands for Direct Digital Controller. It can be called a PLC based system and it is recommended for HVAC systems. DDC keeps a centralized approach and all digital and analog controllers are placed under it.

what is a half wave, full wave, and bridge rectifer.

0 Answers   Takreer,

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what is differance  between SOE an alarams

1 Answers   BMM,

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Why 4ma - 20ma signal used in instrumentation??

5 Answers  

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how to change 4 wire rtd transmitter into a 3 wire rtd transmitter? as our transmitter is working for 4 wire rtd, what should do for working on 3 wire rtd transmitter

1 Answers   HHJ,

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Why any transmitter signal is 4-20 mA only Why is started from lower range 4 mA and upper range is 20mA.

5 Answers   Edac,

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whats the working principle of level transmeter?

6 Answers  

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list of flame proof certification ?

1 Answers   TATA,

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i have one absolute pressure transmitter for the range is -400mmhg to 400mmhg. If i do the zero trim at atmosphere the transmitter should be give 4ma or 12ma? which one is correct?

2 Answers  

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how to convert transmitter milliamps output to like temp,pressure etc.....

5 Answers  

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difference between vaccum and draft

0 Answers  

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For 150 mtr cable run from DCS panel to transmitter (24 VDC with 4-20 ma output), need cable size. 1.5 sqmm is suitable?

2 Answers   NA,

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how feedback signal frm rtd can be use for 2 purpose, i.e. 1for local monitoring and 2nd for controlling in dcs.so how many wired RTD can be used

1 Answers  

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