Interested to Buy Any Domain ? << Click Here >> for more details...
what is ZERO SUPPRESION and ZERO ELEVATION?
- 3 Answers
- 10371 Views
- Reliance, I also Faced
- E-Mail Answers
Answer Posted / rizwan afzal
Suppression.If transmitter is installed in such
configuration that positive pressure is acting on the HP
side even when level in tank is zero. Such as Tx is
installed below datum point then head pressure of impulse
line is always acting on the HP side of the Tx even if tank
is empty, to componsate that head pressure a -ve biasing is
applied which is equal to the head pressure.
IN OTHER WORDS the LRV of Tx is kept at +ve pressure(equal
to head pressure causing error), so that Tx should give 4mA
at that head pressure.
Elevation.If transmitter is installed in such configuration
that positive pressure is acting on the LP side(DP is in -
ve value when level in tank is zero). Such as Tx is
installed in wet leg configuration then head pressure of
wet leg is always acting on the LP side of the Tx (even if
tank is empty), to componsate that head pressure a +ve
biasing is applied.
IN OTHER WORDS the LRV of Tx is kept at -ve pressure(equal
to head pressure causing error), so that Tx should give 4mA
at that head pressure.
Or to keep range in +ve, Tx can be installed in such manner
that LP side is connected with datum point and HP side with
Wet leg.
| Is This Answer Correct ? | 23 Yes | 0 No |
Post New Answer View All Answers
what should he know if he is an assitent engineer instrumentation in cement industries of experience of 10 - 15 year.
How to calibration a control valve?
we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.
What are different types of control valves?
how to turbine speed measurement?
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
what is vibration a part of proceess variable? if vibration is a part variables then how we minimize the actual vibration on machine on load,? vision of instrumentation contrl plz ans me IPGDL interview question
I will attend an interview with GasGas company for a position of Instrument Technician ( Offshore )in next month can anyone tell me what questions they will ask. Thanks in advance.
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
Can any one tell me what type of question asked for instrumentation and control interview panel??? pls mail ramashankar.goel@gmail.com
can any send me a forbes marshall dtron 316 manual
Which type of pressure can be measured by primary elements?
how many type of plug are used in pneumatic control valve,name them.
describe flow nozzel principle?
Which types of quections asked in interview for FORMULATION PLANT (PHARMA)
