Interested to Buy Any Domain ? << Click Here >> for more details...
On drum level, why we are using air to close Control valve?
- 4 Answers
- 9388 Views
- L&T, I also Faced
- E-Mail Answers
Answer Posted / carl_ellis
If the valve's actuator is Air-to-Close, what state does it
fail-safe state?
Check out the article, "How to destroy a boiler - Part 1"
at this link:
http://www.nationalboard.org/index.aspx?pageID=164&ID=238
and scroll down a couple pages to the section entitled "Low
Water Conditions".
The description will provide details that help you
understand what the fail-safe state due to the loss of a
control signal on a boiler feedwater control valve should
be.
Carl Ellis
Measure First
| Is This Answer Correct ? | 4 Yes | 3 No |
Post New Answer View All Answers
What is profibus?
use of split range ? where it is used ? in which control loop it is used ?
How an rtd work, and what volts/current goes to a rtd to measure the resistance?
how to measure draft pressure in transmitter pl. give its single line digram
what is KV and XV valve
WHAT IS TMXT IN TEMPERATURE FOUNDATION FIELDBUS.
how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
principle of automatic votage regulator
you must show the examples application and give at least 4 types of transducer/sensors that can minimize the failure during the manufacturing of the resistors.
How ejector(or)evactor air pump is working in thermal power plant?
How would you choose differential range?
How to calibrate the flow transmitter
how 3 out of 2 Logic/interlocks works? give brief explanation with help of diagram.
What is frequency factor in massflow meter? When using frequency output?
detail of mass flow meter pricipal
