Interested to Buy Any Domain ? << Click Here >> for more details...
1. How many output signals do wew have in process control?
2. Could you write down the names of the pre-commissioning
and commissioning stage test instruments and explain them
(more than 5 items)?
3. What is the first step to commission a transmitter on
service?
4. What is RTD?
5. Find the output value in MA of a temperature transmitter
(RTD Type) at 120degree celius?
6. What is the O/P signal of a pneumatic transmitter?
7. What is the O/P signal of an elctronic transmitter?
8. What is the close loop and open loon?
- 4 Answers
- 10756 Views
- I also Faced
- E-Mail Answers
Answer Posted / tushar
1. Two output signals are used in process control -
analogue and digital.
2. RTD - Resistance Temperature Detector for temperature
measurement upto 600°C.
3. O/P signal for pneumatic transmitter is pneumatic signal
3 - 15 psi
4. O/P signal for electronic transmitter is electrical
signal 4 - 20 mA, 1 - 5 volt.
5. Close loop having sensor, transmitter, controller, and
controlling element (like control valve, on off valve,
damper, servo motor). Open loop does not have controlling
element. open loop is used for only indication in control
system.
| Is This Answer Correct ? | 21 Yes | 0 No |
Post New Answer View All Answers
I want measure the volumetric flow of gas in waste heat recovery Boiler?Tell me how and which type of instruments required. Plz mail me:naba02222@gmail.com Sam please post the answer .
i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.
why is an oxygen sensor used in a boiler stack
䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ
Why upper weighing limit of electronics balance is 90% of the total weighing capacity?
What is intrinsic safety mean.
How can i copy program (parameter) from mm440 (V.F.D.) by using BOP?
WHAT ARE THE INSTRUMENTAL DIAGRAMSOF VALVES?
draw the block diagram of a level transmitter ?
Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?
I want to measure and control level in tank of size 10*5 filled with gasoline, so plz give me the solution with clear details. how to select transmitter and sensors.
why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V
which type of zones used for boiler? & why ?
Why humidity limit is 30 to 55 % for raw material storage?
What is the main difference between Cavitation and Flashing?
