Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...
Answers were Sorted based on User's Feedback
Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...
Impossible to say, because the technology is not stated, nor are the conditions stated.
Yokogawa is a brand name, not a technology, and the reason for a negative flow indication depends on the technology.
Technologies for mass flow (however inferred) are
- multivariable flow meters based on pressure and temperature compensated differential pressure
- Coriolis flow meters
- Vortex flow meters with temperature and pressure compensation
- Thermal dispersion flow meters
which might or might not be Yokogawa products.
The reasons for a false negative flow indication could be quite different for any of the technologies
Conditions like the expected flow rate vs the observed flow rate, medium, medium temperature and pressure, service history, installation details (vertical or horizontal), flow path, type of pump, process function or contiguous piping and its orientation, and configuration elements like low flow cutoff could contribute to an indicated negative flow rate, or operational method of zeroing.
Because it could be that you actually have reverse flow from a thermal syphon or a pressure syphon.
Carl Ellis
Measure First
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / sarin
HP LP Ports will be interchanged. High pressure is coming in LP Side.
| Is This Answer Correct ? | 2 Yes | 2 No |
䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ
why use squareroot in flow measurment by dp transmitter?
you are on site,the plant trips,you are approached by operations,what do you do?
What is the use of GMV in turbine?
0 Answers Hamsco, Maruti Suzuki,
what is a boiler tube leakage detector? ... what is the working principle ?
what are the standards used for earthing instruments in the field?
How to measure the vibration..?
if a dp transmitter has range 100 in H2O and flow is 20mmcf and if the flow is changed to 25 mmcf then what is the formula to determine new range of transmitter
What does threshold mean? what does tolerance mean?
what is difference between hart signal and analog signal (4 to 20 ma)
micromotion flow meter used for
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.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)