Answer / chandra mohan

control modes are two types
1. continuous control modes
in that three types are there
I. P-controller
II.I-controller
III.D-controller and combination of these modes
2. discontinuous control modes
in that two types are there
I. two position control modes
II. three position control modes

Sitrans LR460 Radar level transmitter getting level out or disturbed level during moisture present in the material ie coal in the pccb bunker in CHP.Any suggestions for this problem...????

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What means zero and span in transmitter callibration.

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