Interested to Buy Any Domain ? << Click Here >> for more details...
what is fire and gas system?
- 2 Answers
- 13777 Views
- Andhra Petrochemicals Limited, I also Faced
- E-Mail Answers
Answer Posted / ajith294
Fire and gas system usually as part of a saftey system. the
percentage of Lower Explotion limit shall be dectected by
GAS detector and gives the alarm ,normally 20% is High and
40% is High High alarm.
catalytic bead sensor, semiconductor sensor, infrared point
sensor and ultrasonic sensor are using to detect the gases.
there was no establised standared to difine zero air for
calibration. some procedure says pure nitrogen and some
uses sytetic air. But much more realisitc and practical
using ambient air for zero calibration , when area is
considered to be clean.
for span calibration using 2.5 %Methene (CH4) and balance
nitrogen mixer. 2.5 %Methene (CH4)is equal to the 50 % of
LEL.
| Is This Answer Correct ? | 8 Yes | 0 No |
Post New Answer View All Answers
A valve in series with an orifice plate (DP transmitter), is aligned for constant pressure in the pipeline, if there is an error dx, How to align it in process.
my data card only does run in my mobile so how can change it that it run other mobile & computer and i can stor data in my data card
why orfice is not used for main steam flow calculation
what is the difference between magnetic flow meter and mass flowmeter
what are the diff. in servo and regulatory control?
What is force balance principle?
what is exact time to study dcs and plc cources
how to calculate orifice sizing? and tell me if pipe size bet 50mm t0 200mm then we can use pipe flange??? and above 250mm pipe size should i use D & D/2 Flange? is it right or wrong?
we have a s-5 simense plc having op7 .recently on op7 showing error 1.plc not present 2. DB error frequently. can u have any solution . please send me.
1)How many tpes of vibration probe and how many tpyes of vibration. 2)how we can calibrate a vibration probe with tk3 3)what is RMS value in vibration measuring application and how we calculate it.
why is not useing in boiler skin thermocople
What is 1:1 redundancy ?
Explain the difference between plc and cnc?
What is the difference between uv and ir scanners? and what is the workig principle of both
our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS
