why we use 0.2 to 1.0 kg/cm2 output in control valve
- 4 Answers
- 12854 Views
- GNFC, I also Faced
- E-Mail Answers
Answer Posted / pankaj nandasana
As you know....0.2 to 1 kg/cm2 is equal to 3-15 psig..
Generally we are considering this range...reasons are following...
1) Suppose if your have set lower limit at 0 psig, then how you can differentiate zero signal level and pipe breakage..!!!! You can not distinguish two thing..That why we select some elevated range from 0 psig.
2) Our all instrument are producing linear response in the range of 3-15 psig.
3) Pneumatic supply to all instrument is 20 psig..so alway there is bleading of air from instrument..for standardlisation purpose all are considering 3-15 psig..
| Is This Answer Correct ? | 33 Yes | 0 No |
Post New Answer View All Answers
Draw a group of instruments interlocked to a Pump & Motor?
A length of steel pipe is used to carry sea water to a desalination plant. An adequate corrosion allowance must be specified and indicated in the piping specification, which affects the _________________________ of the pipe
what is zero and span ?
What are the charcterstics of a P&ID controller block for Governor speed raise or lower for a load sharing functionality between 4 Gas turbines in droop mode.
selection of the zener barrier for the hazardeous area zone 0
Name different parts of a pressure gauge.
how to calibrate mass flow meter (Coriolis)? Example calibration range: 0 to 2500 kg/hr line size 3" fluid: Etheline glycol (MEG)
I was working on calibrating turbidity transmitters endress+hauser at effluent polishing plant.We calibrated using NTU buffers.What happened is that when we immersed the sensor, everytime we raise and lower the sensor gradually, the reading will vary.my question is that is there any specifications on what is the required distance from the bottom of the container with buffer to the face of the sensor?Is it ok to install the sensor in a medium which has turbulence specially if bubbles are present?
Explain types of valves?
How many are the types of instrument cables in terms of No. of pair.
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 .
What is the constant voltage unit?
why would you like to join our company
Isometric drawings are generated during _________________ phase of a project
ORP sensor working principle?
