product of flowmeter Fluid to be measured advantages disadvantages

ACCELABAR Gas, steam, liquids.

-Lower head losses than orifice plates reducing

the capital expenditure on pumping eqpt. / save

pump energy costs

-No process interruption for exchange of DP

transmitter.

-Can be used for temperature extremes-

Cryogenics or High Temperatures

- Highly expensive

- Larger and heavier to handle.

VORTEX Liquid (non-resistance)

-Minimal maintenance, No moving parts.

-Calibration using fluid flow not required &

unaffected by viscosity, density, pressure, and

temperature within operating specification.

-Digital or analog output.

-at low flows, pulses are not

generated and the flow meter Can

read low or even zero.

- Vibration Can cause errors in

accuracy.

-Correct installation is critical as a

protruding gasket or weld beads Can

cause vortices to form, leading to

inaccuracy.

- Long, clear lengths of upstream

pipework must be provided, as for

orifice plate flow meters.

MAGNETIC Liquid (resistance)

-flow rate unaffected by fluid density,

consistency, viscosity, turbulence, or piping

configuration.

- Highly accurate due to absence of moving parts/

external sensing lines

- Corrosion-resistant using Teflon liner and

platinum electrodes

-Wide flow measuring ranges & No pressure

drop

-Costly, relative to other flow meter

types.

-Temperature of the fluids being

metered limited by the liner material

rating.

-Cannot be used for gas flow

measurements

COMPAFLOW

Compressed air, gas.

Liquid,

Saturated / Superheated

steam.

-Easily installed between flanges.

-Fabrication simple and inexpensive.

-No limitations on the materials of construction,

line size and flow rate

-Measuring range to about 14:1 to 36:1.

-High permanent pressure loss &

hence high energy consumption to

overcome pressure loss.

-Impractical for systems with low

static pressure.

Accuracies decrease with Beta

ratios above approximately 0.7.

CORIOLISmass flow meter

(liquid,steam)

-Highly accuracy -Highly expensive

VERABAR Gas, steam, liquids.

-Integral manifold head allows direct mounting

of DP transmitters

-Hot tapping: Insertion/ installation without

system shutdown

- Very low pressure drop

-Not suitable for viscous and slurry

applications

-Can be used for only for clean

fluids