Answer / benz

in doing a manual mapping for a radar transmitter specially endress + hauser, you have to empty out the chamber if you're using a stand pipe or bypass. then go to menu extended calibration. when extended calibration is selected the transmitter will guide you for mapping. kindly enter the full length of a probe but remember empty and full calibration were already been setted. you may refer also the configuration details to enter all the parameters to have a proper transmitter operation.

Answer / d chinna babu

Manual mapping will be done when radar gives wrong reading due to obstacles in reactor.For Eg if it is showing 15% level due to some obstacle the distance more than 15% should be entered in manual mapping to delete the error.
But mapping will not work for more than 20%

I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu

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