Answer / farooq

if three sensors installed to measure or monitor one process
variable and when two of them give a high or equal to a set
value than an alarm or correcting action can be activated is
called 2 out of 3 automtion.

Answer / senthil

for example,consider the three transmitters are in
service.in logic,the three xtr compare each other value i.e
A&B,B&C,C&A. check the diff of deviation b/w the
comparison.the xtrs showing minimum deviation is taken,from
this the mean is taken b/w two xtrs.this is 2 0f 3.

Answer / ladla

this information is apply for alarm and trip system where
these shows the redundant of the system

Answer / senthil

2 out of 3:
for example:
we use three pressure transmitters in the process line
discharge of a pump.consider the range is ( 0 to 10 bar).we
have a condition that when the discharge pressure is low the
pump has to trip(less than 4bar).
-if two transmitters goes below this value there is trip.
we have deviation alarm,deviation deadband warning also in 2
voting 3 concept.

Answer / gopi

step by step implimentation our logics by using any controller

what is concept of field,control room area in transmitters?

1 Answers  

what is the full form of psig.

8 Answers  

I HAVE PRESSURE TRANSMITTER WITH TWO WIRES 24 VOLTS SUPPLY.IF TRANSMITTER WILL GIVE SIGNAL TO THE DCS WHAT HAPPEN TO THE 24 VOLTS POWER SUPPLY IT WILL DROP OR REMAIN TO 24 VOLTS POWER SUPPLY.

3 Answers  

I WANT TO KNOW SOME BASIC CONCEPTS RELATED TO INSTRUMENTATION

4 Answers  

What are de-saturators?

0 Answers  

Why DP transmitters are subjected to high static pressure test of 100 bar. Though they will be used for very small pressure range

4 Answers   HPCL,

Can all intrinsic safe transmitters are provided with inbuilt zener barriers? why

2 Answers  

what is use single seated and double seated valve?

2 Answers   Doha Petroleum Construction DOPET,

relation between level and differential pressure.

3 Answers  

Which instrument used to calibrate the pressure switch?

8 Answers  

what is formula mv convert to temperture

4 Answers   Sterlite,

Give 2 application of quartz crystal used for process parameter measurement.

1 Answers   ADMA OPCO,