how can you set a zero and span of transmitter?
Answer / bunny
First give the LRV(Lower Range Value)to the transmitter.If
it is an electronic transmitter,the o/p should be 4mA.If it
is a pneumatic transmitter,the o/p should be 3psi.If we are
not getting the above values,adjust the zero screw in the
transmitter by a screw driver,till we are getting 4mA or
3psi.This is called zero adjustment.Simillarly give URV
(Upper Range Value) to the transmitter.So the output for
electronic and pneumatic transmitters should be 20mA and
15psi respectively.If we are not getting it,adjust the span
screw in the transmitter by a screw driver till we are
getting 20mA or 15psi.This is called span adjustment.
LRV & URV:Suppose the range of a transmiter is 0-30psi.Then
LRV=0psi & URV=30psi.
Is This Answer Correct ? | 23 Yes | 0 No |
What is the processor scan time of allen bradle control logix processor 5555 lenin lenin123us@rediff.com
What are the logic behind 2x2 and 2x3 logic and more when ask in interviews
What different types of problems do occur while doing the loop checking? and please explain in detail or mail me at kadam.aniket143@gmail.com
1 Answers Operational Energy Group, Process Control Technologies,
what will be the pressure in tank which has the total level of 2 meters and is filled 1.2 meters ?
What is the difference between floating and fixed voltage?
What is the working principle of oxygen analyzers(zirconium oxide type) used in CFBC boilers?
3 Answers Bajaj, Kohinoor, Wartsila,
what is control valve and how is work
how to connect the HART protocal with control valves
1. what is 3 point calibration & 5 point calibration? 2. If we use hart communicator to set the LRV & URV of a smart transmitter, did we calibrate the transmitter? why? 3. Make a complet list if meterials needed to properly connect a pressure gauge to a steam pipe using 1/2 inch stainless steel tubing. The gauge connections is 1/2 inch NPT-M and the steam pipe tap has a 1/2 inch female coupling, compression fittings are use. 4. What are the tools in loop checking? 5. What would the ISA symbol of a square root extractor look like? 6. What would you do to completely prepare for the configuration? 7. What safety measures must you undertake when doing configuration? 8. what are the two most commonly use programming languages used when we configure a PLC? 9. What would you do if you accidentally skipped a step in the configuration procedure? 10. How would you know if the configuration were sucessful? 11. Name at least 3 selections available when we configure the burnout protection of a controller?
3 Answers EI Electrotechnical Institute,
Wht is Dry Leg Calibration and Wet Leg Calibration?
how checking is done in fiber optic cable? explain the working of RTU?
how the actually positioner of control valve working? where we gave 3-15psi pressure to I/P converter where it is firstly applied ?- on I/P to positioner then what happen? is control valve operate on 3-15 psi or its bench pressure?