Why an electromagnetic flow meter cannot be used for gases,
steam and oil flow measurements?
Answer Posted / m n gopinath
electromagnetic meters are generally used with conductive
liquids having conductivity greater than 50 microsiemens/cm.
DM Water, gases,steams and hydrocarbons are non conductive,
hence cannot be used.
..however it can be used in acid or alkali services
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How much waterproofing compound in one Sqm Plastering (thick.12mm)
How can separation of chiral chemicals affect the chemical and/or pharmaceutical industries?
What is cathodic protection, how it works in Turbine condensers ?
X is strong but has a very low density (1% of traditional earth materials.) and hence light weight. It is a recyclable material. The compression behaviour of X is strain rate dependent. Higher strain rates result in higher initial modulus and higher compression strength. It can also withstand unlimited number of cycling loading provided the repetitive loads are kept below 80% of the compressive strength. The internal structure of the material includes air-traps which make it poor heat conductor. X is non- biodegradable and chemically inert in both soil and water. Most acids and their water solutions do not attack it; however strong oxidizing acids do. Solvents which attack X include esters, ketones, ethers, aromatic and aliphatic hydrocarbons and their emulsions, among others. It does not support bacterial/fungal growth as well .It also has significant acoustic properties and effectively reduces the transmission of airborne sound. X is combustible and should not be exposed to open flame or other ignition sources. Combustion products are carbon monoxide, carbon dioxide, water and soot. Long-term exposure to sunlight causes yellowing and a slight embrittlement of the surface due to ultraviolet light. X is able to withstand the rigours of temperature cycling, assuring long-term performance.
X is a solid having a white colour at room temperature. It has a density about 2g/cc. Although it has melting point near 325 degree Celsius, its properties start degrading above 260 degree Celsius. The coefficient of friction is very low about 0.1. It has very good dielectric properties especially at higher radio frequencies. It has a very high bulk resistivity. It is chemically inert. It is also resistant to van der Waals force. It is hydrophobic as well as lipophobic. Creep or ‘Cold Flow’ has been observed in X.
What are the advantages of using gear pumps?
can u tel me d question paper of gail?
Define wet bulb globe temperature?
Why are decomposition reactions called the opposite of combination reactions?
What is difference between overall heat transfer coefficient & individual heat transfer coefficient?
What are some common precipitating agents used to remove metals from aqueous waste streams?
What are the Major Utility Systems in a Pharma Plant? How are they interrelated?
What is the most common cause of solid size segregation in bulk solid systems?
What is the symbol of sodium?
For a heat exchanger, will the overall heat transfer coefficient increase along with an increase in lmtd (log mean temperature difference) around the unit?