why cant we use mV instead of mA?
Answer Posted / mohammed
because we cannot lay a cable for more than 50 m to carry mV
signal whereas we can connect current signal cable because it
is less diameter, will not affect by noise and not costly in
addition can be connected for long distances
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What pressure results for a flow transmitter of range 0- 180t/h in the dcs and 0-301mbar in the field using square root extraction. Kindly also suggest formulae for the percentages 0,25,50,75,100?
sir i m preparing for BARC but i am not getting any papers to prepare for this exam so please send me some sample papers to my i.d for the preparation of barc.
can we replace a slot sensor (inductive type) with limit switch (potenial free contact / no-nc type).
In power plant to measure vibration of a turbine we install sensors. Before install this sensor we have to set gap voltage. What is meant by gap voltage and its use?
How does a single acting, spring return ball valve actually work? Does it require continuous air supply?
Reason for capillary type dp level transmitter fluctuation
What is the difference between working pressure and calibration pressure of a control valve
the 3 most common transmitter protocol being in refinery or qatar gas and aramco.
Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem
What is the difference between PLC and DDC?
steps for installing orifice plate?
Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .
I need to know steps to Calibration Valve Guard......
please send the sample qustion paper for iocl written test ..
hii my name is sujith...i am preparing for HPVL GET 2010... so ,,,pls help me by send any previous questions or material to my site.....(Msujith_12@in.com) thank q