Answer / rezvanian

Due to the high current flowing through the power cable
that warms the cable and its temperature rises so we use
ladder tray for power cable and the temperature of the
power cable can be exchanged with the surroundings.
We cant use ladder tray for control cables because the
control cables have high bending capability ( flexibility)
which is dropping belly ( belly bend downward ) and the
control cables temperature is always near the ambient
temperature and the perforated cable tray is suitable.

Consider a level troll. i am getting a correct value in 4mA and 20mA. the value in the middle(30 to 60%)is disturbed and i am not getting the appropriate value. what is the solution to normalize the level and to get the correct value..

2 Answers   KNPC,

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What is electronics?

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HOW TO DO PERFECT CALIBRATION OF DIFFERENTIAL PRESSURE TRANSMITTER FOR CLOSE VESSEL TANK LEVEL PURPOSE ???? AND HOW TO MAKE ZERO PRESSURE ?? Rosemount 2051 Pressure Transmitter with HART® Revision 5 and 7 Selectable Protocol BIENG USED !! HOW TO CALIBRATE FIELD SIDE DPT WITH THE HELP OF SPAN & ZERO PUSH BUTTONS ??

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Dead weight tester & comparator for calibration , which is more accurate , what is the application.

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How we will check whether the proximity, which we have is either NPN or PNP, if no data sheet or manual or any details is available to us ???

1 Answers  

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SIR MAY I KNOW IF RADAR TYPE LEVEL TRANSMITTER SHOWING IN THE FIELD 0 % LEVEL AND IN DCS SHOWING 100% THEN WHAT IS THE CAUSE I CLEAN THE CHAMBER & TAKEN ONLINE BUT ONLY ONCE ITS BECOME ZERO IN DCS BUT AGAIN 100% SHOWING IN DCS,THEN I REMOVE THE POWER SUPLLY AND CONNECT IT AGAIN .IS IT OK BUT STILL IN THE DCS ITS 100% AND ON THE DISPLAY ITS INITILAZIATION PLEASE HELP ME READRING THIS?

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what is mean by live zero and dead zero

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What are different types of control valves?

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