Flow Meter (Endress+Hauser)

K-factor is a value used to tell the transmitter how much correction to apply to the raw signal from the flow tube. Each flow tube, even if they're the same size, have different k-factors. You'll have to input the k-factor into the transmitter's configuration so that it will give the correct flow reading.

'Hope I've explained that adequately.

Regards,

Vulcan

The k factor is a factory applied correction factor. All flow meters have some variation in manufacturing so when they are calibrated after they are made, the slight differences are compensated for. All of the meters you listed above are interchangeable.

My only concern in the numbers you listed is that you gave the order code as 83F08 with a DN of 15. The 08 in the order code should match the DN number as it does in all of the other meters you listed. Therefore the first meter you listed should be a DN 8 meter with an 83F08 order code.

thank you for your advice.

you are saying this flow meters are interchangeable

if i change water flow meter to oil application what parameters i have to adjust in flow meters

i have to consider density or any other parameters

please let me know

this is from my own commissioning and startup experience.

if you change the fluids from water to oil, yes, you have to program the promass 83F with new reference density at a reference temperature (that you knew for certain). you also have to give it the new coefficient of expansion (per increment of temperature unit.) this should be a very easy task to complete.

what harder, i found, is that the foaming and entrapment of air in oil. the promass 83F, or any other coriolis meter, does not like it. so, pay attention to the installation of the meter to give it enough back pressure. i also had problems with vibration in other installation too.

what is coefficient of expansion where i can get this information for perticular liquid

during the installation of the meter i have to give enough back pressure what does it mean

i have to put non return valve or something else

please inform me

coefficient of expansion is annoted as alpha factor.

Coefficients of expansion of petroleum fluids are published by many publications available if you have access to API MPMS 11.1 or Shell/Exxon/Dow Practices... they actually changes with the normal operating temperature. so, you put in the number that close to your operation temperature conditions.

for example, the coefficient of expansion for lube oil from 100 to 300F is roughly about 0.000530 per degree F (0.00053/F). The coefficient of expansion for heating oil or diesel from 32F to 200F is about 0.00065/F. The coefficient of gasoline is about 0.0009/F. etc.

if you don't have access to any of these publications, try the CRC chemical handbook.

the back pressure requirement meanings that the installed position of the promass should be as such that there is at least 15 psi of pressure in the line instead of, like, close to ambient or vacuum conditions.

you don't have to have a restriction, downstream of the promass, for it to work. but it definitely will help big time.

what is the roll of co-efficient of expansion and temperature

temperature makes the tube expand or what is the reason

what if i put ordinary flow meter in water line and operate it manually

then how can i change the things towards the plc

because once this flow meter become faulty it difficult to get another flow meter in kenya please advice me

what is this API MPMS 11.1 or Shell/Exxon/Dow Practices

where can i get access accept CRC Chemical handbook

is it negligible or it must to put value for calibration

are those practises having the coefficient of expansion of fatty acid, stearine,coconut oil, water and brine.

Yes, changing parameters is easy, however moving a water meter to oil is much easier than moving an oil meter to water. You should try not to move an oil meter to water due to the trouble cleaning all the oil out of the meter. If you can, try to have one spare meter for each fluid. This prevents cross contamination and also speeds up changing a bad meter at 3:00 in the morning. The oil meter would likely need to be sent out for cleaning before using in water.