Interested to Buy Any Domain ? << Click Here >> for more details...
what is ZERO SUPPRESION and ZERO ELEVATION?
- 3 Answers
- 10504 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
why would you like to join our company
what are the diff. in servo and regulatory control?
What happen if I install my pressure transmitter below the elevation of pipe in natural gas service?
sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com
hi! i want to know about mpse exam.
How to calculate P,I&D value in PID controller ?
Explain why use mmwc unit?
Pl send the model question paper of mahagenco account officer post
Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.
how to measure oxygen which methods are using?
We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.
what is function of sensor, and how is it work , explain with difination
pls provide me syllabus and old question paper of instrumentation engineering for GET(JSPL)
what are the different types of Protocols? & their applications.
what is cold loop? difference between hot and cold loop?
