What means zero and span in transmitter callibration.
- 8 Answers
- 59895 Views
- Bajaj, Wartsila, I also Faced
- E-Mail Answers
Answer Posted / gopalakrishnan.p
Yes there are two adjustments in transmitter and
positioners i.e ZERO and SPAN adjustment.
For example, if we calibrate the level transmitter for 4 to
20 mA with the range of 0 mmH2o to 5000 mmH20, for 0 mmH2o
we must get 4 mA and if it not 4 mA(say 4.5mA) means, we
start to adjust the zero adjustment to make 4 mA for 0
mmH2o.
And for 5000 mmH2o we must get 20 mA and if it not 20 mA
(say 19.69 mA) means, we start to adjust the span to 20 mA.
This is the way to calibrate the transmitter with the help
of zero and span adjustment.
| Is This Answer Correct ? | 112 Yes | 8 No |
Post New Answer View All Answers
why we are using drum level control valve air to close?
What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?
Displace type LT to be calibrated in workshop, wt. 40, dia- 60 mm, density- 0.8kg/cm3.
What are the types of valves?
What you mean by multi stage control vavles?
sir i m preparing for BARC but i am not getting any papers to prepare for this exam so please send me some sample papers to my i.d for the preparation of barc.
Which type of pressure can be measured by these elements?
we are using centum vp as monitoring with Dell precision work station T3600 but some times PC(s) are restarted automatically . how we can solve this problem? thanks
We are using Rosemount 5400 series Radar Level Transmitters in all types of Sump Applications having oily water hdrocarbon petrochemical nature. What we are facing the problem frequently is that always getting reading frezzed at some value. If we do power recycling , sometimes it is working . then making same freezing problem. If anybody faced before such type of problem and also having solution , Please give the answer.
How to Calibrate Coriolis Flow transmitter in field
How do bending tubing provide better measurement than using tubing fittings such as elbows?
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
Galvanizing.
What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?
How can a d.p. Transmitter be calibrated?
