Answer / ganesh

1.DIFFERENCE BETWEEN UPSTREAM PRESSURE AND DOWNSTREAM
PRESSURE IS THE DP ACROSS ORIFICE.
2.PERMANENT PRESSURE ACROSS ORIFICE IS NOT FIXED.

Answer / ali

dp(differential pressure) the pressure across dp can not permanent it changes with change in up stream pressure and also pressure change to down stream and velocity also increase at down stream side of orifice plate it is called differential pressure.

i want to control the temp of sand(welding flux) between the range of 150deg C to 170deg C. sugges me sum temp control method without PID controller.

1 Answers  

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Regarding MOS (maintenance override switch), I want to know its function and its state ( 1 or 0 when not activated ). An example will be very helpful..thank you.

1 Answers  

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diff between neutral ,ground,phase , earthing and shielding?

0 Answers   L&T,

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How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?

0 Answers   Matrix,

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Yokogawa CENTUMVP R6.09 unable to download to Engineering Station with ExaOPC R3.75 The issue is when I try to download the common project section to the Engineering Station (STN) from the HIS in System View, it is unable to connect. The error displayed is: WARNING: Could not connect to equalize destination. (7001) Retrying. Number of retries = 0/1 ERROR: LdXopsLoadMain: connect error 10060 ERROR: Processing terminated due to connection error. (7002) Equalization end with errors. STN0149 ---- ERROR = 2 WARNING = 1 ---- Background: >Updated the ExaOPC software on the STN from 3.60 to 3.75 >STN operating system is Windows Server 2008 R2 >HIS operating system is Windows Server 2016 Stanard Solutions attempted include: >Ensuring all IP addresses are correct and all networked devices can be pinged. >The ability to ping a device using its host name from another device (<ping STN0149> from HIS) >Ensure both devices firewalls are disabled. >The antivirus installed on the STN is disabled. >Ensuring both devices are within the same workgroup. >Added both devices to each other's Host and LMHost files. >Running IT Security tool after changing any administrative settings.

0 Answers  

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why is negative range given to measure the steam drum level

2 Answers   Jindal,

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warning lamp does not light, but it does light when the wire from the lamp going to the sending unit is grounded (the part that plugs into the sending unit) what does this indicate)?

1 Answers  

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Conversions

0 Answers   CCIE, Nestle,

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should I use Hydrostatic Pressure Transmitter for measurement of DENSITY of filled tank ? If YES then please explain how.

2 Answers   HPCL,

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what's the criteria of using over range protector when installing Pressure Gauge

1 Answers  

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what is the reset offset and control system in instrumentation

0 Answers   ABB,

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DEAR SIR/MADAM MY NAME IS ARKAPROVA BHATTACHARYYA.I AM A FRESHER INSTRUMENTATION ENGINEER.CAN YOU PLEASE SEND SOME QUESTION PAPERS OF GRADUATE ENGINEER TRAINEE EXAM OF DVC(DAMODAR VALLY CORPORATION).MY EMAIL IDs ARE arka_aec@rediffmail.com.

0 Answers  

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