Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?
I have installed a RTD whose length is 2250mm(RTD stem length), but it's upper 200 -250mm is out of the reactor, and this upper 200mm stem is surrounded by atmospheric temp. And the lower portion i.e. 2000mm is in contact with the measuring fluid, then does the final measuring temp. Gonna change as the upper 200mm RTD stem is out of reactor?
If a flow transmitter (magnetic type FT) that can measure flow and temperature, then why in some industries people use flow transmitter and temperature transmitter in the same line 1 after another? Even after 1 single flow FT is capable of measuring flow as well as temperature.
If a normal magnetic type flow transmitter that can measure flow, temperature and show this parameters on field, is it possible by any means to get this (flow and temperature) parameters info. On dcs? And if yes then with HART, FO communication or any other communication system?
The company where I am working, their is rosemount 5400 series radar type level transmitter, it is meant to show level of filled tank, but along with the level it is showing temperature also, so my question is how a onon-contact type radar type level transmitter can show temperature even if it does not have any contact with the fluid?
i need some objective type questions in instrumentation
please send me some question papers of HPCL aptitude test ??
please send it to email@example.com ...
installation process of orifice,a question asked for confusion creation in interview by BARC
1.if orifice is tightly fitted with pipe ,it will act like venturi
2.if orifice is left hanging in between liquid it will not create the pressure difference exactly,
how can be calibrate flow indication transmitter (rosemount)
it shows excess milli amps nearly about 24 ma on full
scale, but its scale was set on 20ma on full scale..???how
can be simiulate..???
what is the field bus calble ? what are diffrences in orang
colur cable and black coular calble ?
how to calculate control valve bonnet size?? or how to select
how do we commission inergen system?
What is zero elevation and zero suppression?
what is temperature compensation?
What is the procedure of calibration of Load cell?
What are the interlocks we have to check during the start up of LP/HP compressor?
A PLC is programmed to drive three motors A, B and C as
After running motor A for an hour, motor B should get ON and
motor A should get OFF.
And after running motor B for an hour, motor C should get ON
and motor B should get OFF.
And after running motor C for an hour, motor A should get ON
and motor C should get OFF.
(That is, a cyclic repetition with time period one hour)
Now, the second condition is:
If any motor gone faulty and is tripped, the consecutive
motor should get ON and
the faulty (tripped) motor should be eliminated from cyclic
The remaining two motors should bear the cyclic repetition
of one hour each.
(For healthy motor take logic as high and for tripped motor
take logic as low)
Now, the third condition is:
When motor A load(Amps) exceeds 60% of its rated load, motor
B should get ON in parallel to motor A.
And when both motors A & B are running in parallel, and if
their load exceeds 60% of their rated load,
motor C should also start in parallel to A & B.
[Here the cyclic repetition is eliminated, until their loads
[Take logic high(1) for load at 60% and logic low(0) for
load at 40%]
Now draw a flow chart or a ladder diagram to fulfill the
Pl send the model question paper of mahagenco account
Explain the combusion chamber
how u calibrate sox nox co2 co in cemps?what is opacity n
HPm?tell the standard parameters of cems?