0:09
video we discussed the level
0:13
transmitter output current signal with
0:20
level now in this video I will show you
0:25
one practical level transmitter
0:29
installed in the field
0:33
okay see this is a small tank and we
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want to measure the tank
0:41
level in this case we used one
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differential pressure based level
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transmitter for that purpose we have to
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points for measuring the
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level as it is a differential pressure
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purpose we taken two points this is the
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first point this is the second Point see
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two these two points via these impulse
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tubing we have to connect to a
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see these tubes are connected to a
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this is a differential pressure based
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transmitter this transmitter measures
1:38
the tank level and sends the current
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signal to the PLC or DCS systems okay
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now we will simulate the tank level and
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observe how much current this
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transmitter is sending and what is the
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control room graphic status both we will
2:04
see okay let's simulate the tank level
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now on this transmitter okay remember we
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are doing this in the field it is a
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exercise see this is the transmitter
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transmitter right now the tank level is
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this multimeter is connected in series
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output as the current is measured in
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series that is why we have to connect
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multimeter in series so this is our
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level transmet this is the
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multimeter and the highlighted section
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under the red color this is in the field
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okay remember that and on the left side
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if you see if you see one blue color
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border is there right this is the
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section from the control room computer
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Graphics this is the tank which we seen
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earlier and this is the level
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transmitter this level transmitter value
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is updating here and in this face plate
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also here it will update okay right now
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okay now the value is simulated to 25%
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25% if you see in the level transmitter
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display it is updated to
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zero now the multimeter is showing 8
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see how much value it will show in
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control room okay it is also updated
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now and right now the level it is
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per see in the field it is showing
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25% and in the control room also it is
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calibration then exactly it will match
4:28
from the control room to the field
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okay this is just a trail purpose for
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our course video I taken it so you don't
4:37
need to worry about the deviation
4:39
between the control room and
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field now I will increase the tank level
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to 50 percentage observe the level
4:50
transmitter display value and the
4:54
multimeter reading and control room also
5:00
see I'm controlling the time between the
5:03
videos okay that is why there will be
5:08
Practical if the value is updated in the
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transmitter instantly the value will be
5:14
updated in the control room also for
5:17
explanation purpose we need some time
5:20
before going to the another topic that
5:23
is why I'm just delaying the control
5:26
room status update okay
5:30
now I increase the level signal to 50
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percentage from the 25 percentage see
5:35
what happens the transmitter updated to
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50% and multimeter also updated to 12
5:42
milliamp we will see the status in the
5:45
control room also it is also
5:52
6% okay when the value is updated in the
5:58
transmitter then immed immediately the
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control room status also will be updated
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now I will increase this level to 75%
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happens now the transmitter is 75
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percentage multimeter showing 16
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milliamp both transmitter and multimeter
6:23
are in the field and this Graphics are
6:27
in the control room computer
6:31
okay it is also showing 74.8 5
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percentage okay next I will increase the
6:43
happens the transmitter updated to 100
6:46
per multimeter showing 19.9 6
6:52
milliamp and control room
7:00
so this is how the transmitter based on
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4 to 20 milliamp works I mean with
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respective to the current
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signal the transmitter measures the tank
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level and generates equivalent current
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signal in the range of 4 and 20
7:21
milliamp and since that current signal
7:25
room PLC DCS or any type of
7:30
controller and that respect to
7:32
controller again calculates the
7:35
equivalent tank level
7:39
signal so this is the concept we seen in
7:43
the simulation in the field and in the
7:48
also thank you I will meet you in the
