Interested to Buy Any Domain ? << Click Here >> for more details...
What means zero and span in transmitter callibration.
- 8 Answers
- 62766 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
What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).
what is interface level and how it is calibrate?
what is output of FOUNDATION FIELD BUS transmitter
Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
Calibration procedure for electro magnetic flow meter
If we increase only P what will be controller action ?
what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?
How to find out the current of two motors having same power consumption but different RPM?
what are the selections available in configuring a burnout protection of a controller? thanks
What is the Working principle of Dozing valve?
I was working on calibrating turbidity transmitters endress+hauser at effluent polishing plant.We calibrated using NTU buffers.What happened is that when we immersed the sensor, everytime we raise and lower the sensor gradually, the reading will vary.my question is that is there any specifications on what is the required distance from the bottom of the container with buffer to the face of the sensor?Is it ok to install the sensor in a medium which has turbulence specially if bubbles are present?
How we can check the 2 wire proxy switch? & how it is connected to DI MODULE OF PLC?
1. what is modbus cable? 2. what kind of communication we are using for the interface of DCS, ESD and Third party cabinets? 3. What is serial communication and peer to peer communication?
What are advantages and disadvantage of the ac supply load cell?
